Protection Devices
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Protection Devices The complete solution Hager offers a wide range of protection devices, such as miniature circuit breakers, auxiliaries and accessories, RCD add-on blocks, single pole and switched neutral devices, 2 and 4 pole RCCBs, RCCB auxiliaries, RCBOs, HRC fuse carriers, motor starters, earth fault relays and surge protection devices. Miniature Circuit Breakers Ph/N, 1, 2, 3, 4 Poles 4.02 Add-on Blocks for MCB Range 4.05 Add-on Blocks for Commercial Range 4.07 Type B and C SP&N 4.13 Single Pole 4.14 2 and 4 Pole RCCBs 4.16 Auxiliaries and Accessories for MCBs, RCCBs and RCBOs 4.21 Fuse Carriers 4.23 Photovoltaic Fuse Carriers, SPD and Switch Disconnectors 4.25 Motor Starters 4.26 Surge Protection Devices 4.28 Technical Data 4.32 Protection Devices RCBOs Miniature Circuit Breakers 6kA Type B and C - MBN, MCN Description Protection and control of circuits against overloads and short circuits. Circuit isolation. Technical data s breaking capacity : 6kA (IEC 60 898-1), s curves : B curve : 3 to 5 In, C curve : 5 to 10 In s poles : 1PP, 2PP, 3PP, 4PP (protected poles) s voltage rating : 240/400V AC s current rating : 6 to 63A s frequency : 50/60Hz s climate sealed : T2 s will accept accessories Description In/A Single pole MCBs 1 2 Connection capacity rigid conductors : 25mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60 898-1 and EN 60898-1. Width in ] 17.5mm Pack qty. Cat. ref. B curve 6 10 16 20 25 32 40 50 63 1 1 1 1 1 1 1 1 1 12 12 12 12 12 12 12 12 12 MBN106A MBN110A MBN116A MBN120A MBN125A MBN132A MBN140A MBN150A MBN163A MCN106A MCN110A MCN116A MCN120A MCN125A MCN132A MCN140A MCN150A MCN163A 6 10 16 20 25 32 40 50 63 2 2 2 2 2 2 2 2 2 6 6 6 6 6 6 6 6 6 MBN206A MBN210A MBN216A MBN220A MBN225A MBN232A MBN240A MBN250A MBN263A MCN206A MCN210A MCN216A MCN220A MCN225A MCN232A MCN240A MCN250A MCN263A 6 10 16 20 25 32 40 50 63 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 MBN306A MBN310A MBN316A MBN320A MBN325A MBN332A MBN340A MBN350A MBN363A MCN306A MCN310A MCN316A MCN320A MCN325A MCN332A MCN340A MCN350A MCN363A 6 10 16 20 25 32 40 50 63 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 MBN406A MBN410A MBN416A MBN420A MBN425A MBN432A MBN440A MBN450A MBN463A MCN406A MCN410A MCN416A MCN420A MCN425A MCN432A MCN440A MCN450A MCN463A C curve MBN116A Double pole MCBs 1 3 2 4 MBN232A Three pole MCBs 1 3 5 2 4 6 MBN320A Four pole MCBs MBN440A 4.02 1 3 5 7 2 4 6 8 Miniature Circuit Breakers 6/10kA Type B and C - MT, MU Technical data s breaking capacity : 6kA (IEC 60 898-1), s curves : B curve : 3 to 5 In, C curve : 5 to 10 In s poles : 1PP, 2PP, 3PP, 4PP Description Single pole MCBs 1 2 MT116A Double pole MCBs 1 3 2 4 Three pole MCBs MT216A 1 3 5 2 4 6 Four pole MCBs 1 3 5 7 2 4 6 8 (protected poles) s voltage rating : 240/400V AC s current rating : 6 to 63A s frequency : 50/60Hz s climate sealed : T2 s will not accept accessories Complies with IEC 60 898-1 Connection capacity rigid conductors : 25mm² ĻH[LEOHFRQGXFWRUVPP Width in ] 17.5mm Pack qty. Cat. ref. B curve C curve 6 10 16 20 25 32 40 50 63 1 1 1 1 1 1 1 1 1 12 12 12 12 12 12 12 12 12 MT106A MT110A MT116A MT120A MT125A MT132A MT140A MT150A MT163A MU106A MU110A MU116A MU120A MU125A MU132A MU140A MU150A MU163A 6 10 16 20 25 32 40 50 63 2 2 2 2 2 2 2 2 2 6 6 6 6 6 6 6 6 6 MT206A MT210A MT216A MT220A MT225A MT232A MT240A MT250A MT263A MU206A MU210A MU216A MU220A MU225A MU232A MU240A MU250A MU263A 6 10 16 20 25 32 40 50 63 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 MT306A MT310A MT316A MT320A MT325A MT332A MT340A MT350A MT363A MU306A MU310A MU316A MU320A MU325A MU332A MU340A MU350A MU363A 6 10 16 20 25 32 4 4 4 4 4 4 3 3 3 3 3 3 - MU406A MU410A MU416A MU420A MU425A 40 50 63 4 4 4 3 3 3 - MU440A MU450A MU463A In/A MU432A MT320A 4.03 Protection Devices Description Protection and control of circuits against overloads and short circuits. Circuit isolation. Miniature Circuit Breakers 10/15kA Type B, C and D - NBN, NCN, NDN Description Protection and control of circuits against overloads and short circuits. Circuit isolation. Technical data s breaking capacity : 10kA (IEC 60 898-1), 15kA (IEC 60 947-2) s curves : B curve : 3 to 5 In, C curve : 5 to 10 In, D curve : 10 to 20 In s poles : 1PP, 2PP, 3PP, 4PP (protected poles) s voltage rating : 240/400V AC s current rating : 0,5 to 63A s frequency : 50/60Hz Description In/A Single pole MCBs 1 2 NCN116A Double pole MCBs 1 3 2 4 NCN232A Three pole MCBs 1 3 5 2 4 6 NCN320A Four pole MCBs NCN440A 4.04 1 3 5 7 2 4 6 8 s climate sealed : T2 s will accept accessories Connection capacity rigid conductors : 35mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60 898-1, IEC 60 947-2, EN 60898-1 and EN 60947-2. Width in ] 17.5mm Pack qty. Cat. ref. B curve C curve 0.5 1 2 3 4 6 10 16 20 25 32 40 50 63 1 1 1 1 1 1 1 1 1 1 1 1 1 1 12 12 12 12 12 12 12 12 12 12 12 12 12 12 NBN106A NBN110A NBN116A NBN120A NBN125A NBN132A NBN140A NBN150A NBN163A NCN100A NCN101A NCN102A NCN103A NCN104A NCN106A NCN110A NCN116A NCN120A NCN125A NCN132A NCN140A NCN150A NCN163A NDN100A NDN101A NDN102A NDN103A NDN104A NDN106A NDN110A NDN116A NDN120A NDN125A NDN132A NDN140A NDN150A NDN163A 0.5 1 2 3 4 6 10 16 20 25 32 40 50 63 2 2 2 2 2 2 2 2 2 2 2 2 2 2 6 6 6 6 6 6 6 6 6 6 6 6 6 6 NBN206A NBN210A NBN216A NBN220A NBN225A NBN232A NBN240A NBN250A NBN263A NCN200A NCN201A NCN202A NCN203A NCN204A NCN206A NCN210A NCN216A NCN220A NCN225A NCN232A NCN240A NCN250A NCN263A NDN200A NDN201A NDN202A NDN203A NDN204A NDN206A NDN210A NDN216A NDN220A NDN225A NDN232A NDN240A NDN250A NDN263A 0.5 1 2 3 4 6 10 16 20 25 32 40 50 63 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 NBN306A NBN310A NBN316A NBN320A NBN325A NBN332A NBN340A NBN350A NBN363A NCN300A NCN301A NCN302A NCN303A NCN304A NCN306A NCN310A NCN316A NCN320A NCN325A NCN332A NCN340A NCN350A NCN363A NDN300A NDN301A NDN302A NDN303A NDN304A NDN306A NDN310A NDN316A NDN320A NDN325A NDN332A NDN340A NDN350A NDN363A 0.5 1 2 3 4 6 10 16 20 25 32 40 50 63 4 4 4 4 4 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 3 3 3 3 3 NBN406A NBN410A NBN416A NBN420A NBN425A NBN432A NBN440A NBN450A NBN463A NCN400A NCN401A NCN402A NCN403A NCN404A NCN406A NCN410A NCN416A NCN420A NCN425A NCN432A NCN440A NCN450A NCN463A NDN400A NDN401A NDN402A NDN403A NDN404A NDN406A NDN410A NDN416A NDN420A NDN425A NDN432A NDN440A NDN450A NDN463A D curve Add-on Blocks for MCBs NBN, NCN, NDN s types : AC and A types frequency : 50/60Hz s mounting type : side mounted s climate sealed : T2 Connection capacity s 25A : rigid conductors : 10mm² ĻH[LEOHFRQGXFWRUVPP s 40A, 63A : rigid conductors : 25mm² ĻH[LEOHFRQGXFWRUVPP Technical data s sensitivity : High sensitivity : 10mA, 30mA instant tripping, Medium sensitivity : 100mA, 300mA, 500mA instant tripping / 300mA, 500mA, 1A selective (time delay) s current rating : 25 to 63A s voltage rating : 240/400V AC s poles : 2P, 3P, 4P Technical information s AC type : Ensured for residual sinusoidal alternating currents, whether suddenly applied or slowly rising. It incorporate a ĺOWHULQJGHYLFHSUHYHQWLQJWKH risk of nuisance tripping due to the transient voltages (lightening, line disturbance on other Description I6n 2 pole add-on blocks BD364 s A and HI type (reinforced immunity) : In addition to the characteristics of AC type, it ensured for residual pulsating direct currents, whether suddenly applied or slowly rising. They are used whenever fault currents are not sinusoidal. It reduces the unexpected tripping when they protect equipment generating disturbances like DC fault current (washing machines, speed drives, microprocessing, electronic ballast...). Complies with EN 61008-1. Width in ] Pack 17.5mm qty Cat. ref. class AC class A and HI 10 mA 25 2 1 BC226 - 30 mA 25 40 63 2 2 2 1 1 1 BD226 BD241 BD264 BD225 BD240 BD263 100 mA 63 2 1 BE264 - 100 mA 63 2 1 BN264 - 300 mA 25 40 63 2 2 2 1 1 1 BF226 BF241 BF264 BF225 BF240 BF263 300 mA 63 2 1 BP264 - 500 mA 63 2 1 BG264 - 500 mA 63 2 1 BR264 - 1A 63 2 1 BS264 BS263 30 mA 25 40 63 2 3 3 1 1 1 BD326 BD341 BD364 BD325 BD340 BD363 300 mA 25 40 63 2 3 3 1 1 1 BF326 BF341 BF364 BF325 BF340 BF363 300 mA 63 3 1 BP364 - 500 mA 63 1 BG364 - 1A 63 1 BS364 BS363 BD226 3 pole add-on blocks In/A equipment…) and transient currents (from high capacitive circuits). 3 4.05 Protection Devices Description When add-on block is associated with MCBs (NGN, NBN, NCN, NDN, NQN, NRN, NSN), the complete unit provides an earth fault protection and protects against electrical shocks by direct or indirect contacts. They are designed to EHĺWWHGWRWKHULJKWKDQGVLGHRI 2, 3, and 4 poles MCBs. Add-on Blocks for MCBs NBN, NCN, NDN Description 4 pole add-on blocks BD463 4 pole add-on blocks double output BFC840 4.06 I6n In/A Width in ] Pack 17.5mm qty Cat. ref. class AC 2 1 1 1 BD426 BD441 BD464 class A and HI BD425 BD440 BD463 30 mA 25 40 63 100 mA 63 1 BE464 - 100 mA 63 1 BN464 - 300 mA 25 40 63 1 1 1 BF426 BF441 BF464 BF425 BF440 BF463 300 mA 63 1 BP464 - 500 mA 63 1 BG464 - 1A 63 1 BS464 - 30 mA 25 40 63 3 3 3 1 1 1 BDC825 BDC840 BDC863 BDH825 BDH840 BDH863 300 mA 25 40 63 3 3 3 1 1 1 BFC825 BFC840 BFC863 BFH825 BFH840 BFH863 300 mA 63 3 1 BPC863 - 1A 63 3 1 BSC863 - 2 Miniature Circuit Breakers 50kA Type C - HMX Technical data s breaking capacity : 50kA (IEC 60 947-2) s curves : C curve : 5 to 10 In s poles : 1PP, 2PP, 3PP, 4PP (protected poles) s voltage rating : 230/400V AC s current rating : 10-63 50kA 80-125 10-30kA s frequency : 50/60Hz s will accept accessories s climate sealed : T2 Connection capacity rigid conductors : 70 mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60 947-2. Description In/A Width in ] 17.5mm Pack qty Single pole MCBs 10 16 20 25 32 40 50 63 1,5 1,5 1,5 1,5 1,5 1,5 1,5 1,5 1 1 1 1 1 1 1 1 HMX110 HMX116 HMX120 HMX125 HMX132 HMX140 HMX150 HMX163 Double pole MCBs 10 16 20 25 32 40 50 63 3 3 3 3 3 3 3 3 1 1 1 1 1 1 1 1 HMX210 HMX216 HMX220 HMX225 HMX232 HMX240 HMX250 HMX263 Three pole MCBs 10 16 20 25 32 40 50 63 4,5 4,5 4,5 4,5 4,5 4,5 4,5 4,5 1 1 1 1 1 1 1 1 HMX310 HMX316 HMX320 HMX325 HMX332 HMX340 HMX350 HMX363 Four pole MCBs 10 16 20 25 32 40 50 63 6 6 6 6 6 6 6 6 1 1 1 1 1 1 1 1 HMX410 HMX416 HMX420 HMX425 HMX432 HMX440 HMX450 HMX463 Cat. ref. HMX120 HMX225 HMX320 HMX440 4.07 Protection Devices Description Protection and control of circuits against overloads and short circuits. Circuit isolation. They can be used for installation in commercial building and industrial premises for high interrupt capacities. Miniature Circuit Breakers 10kA Type B and C - HLE, HLF Description Protection and control of circuits against overloads and short circuits. Circuit isolation. They can be used for installation in commercial building and industrial premises. Technical data s breaking capacity : 10kA (IEC 60 898-1), 10kA (IEC 60947-2) Description Single pole MCBs Double pole MCBs s curves : B curve : 3 to 5 In, C curve : 5 to 10 In s poles : 1PP, 2PP, 3PP, 4PP (protected poles) s voltage rating : 230/400V AC s current rating : 80 to 125A s frequency : 50/60Hz s will accept accessories s climate sealed : T2 Connection capacity rigid conductors : 70 mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60 898-1 and IEC 60 947-2. Width in ] 17.5mm Pack qty Cat. ref. B curve 80 1,5 1 HLE180S HMF180 100 1,5 1 HLE190S HMF190 125 1,5 1 HLE199S HMF199 80 3 1 HLE280S HMF280 100 3 1 HLE290S HMF290 125 3 1 HLE299S HMF299 80 4,5 1 HLE380S HMF380 100 4,5 1 HLE390S HMF390 125 4,5 1 HLE399S HMF399 80 6 1 HLE480S HMF480 100 6 1 HLE490S HMF490 125 6 1 HLE499S HMF499 In/A C curve HLE199S Three pole MCBs HLE299S Four pole MCBs HLE399S HLE499S 4.08 Miniature Circuit Breakers 15kA Type B, C and D - HMB, HMC, HMD Technical data s breaking capacity : 15kA (IEC 60 898-1), 15kA (IEC 60 947-2) Description Single pole MCBs Double pole MCBs s curves : B curve : 3 to 5 In, C curve : 5 to 10 In, D curve : 10 to 20 In s poles : 1PP, 2PP, 3PP, 4PP (protected poles) s voltage rating : 230/400V AC s current rating : 80 to 125A s frequency : 50/60Hz s will accept accessories s climate sealed : T2 Connection capacity rigid conductors : 70mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60 898-1 and IEC 60 947-2. Width in ] 17.5mm Pack qty Cat. ref. B curve C curve 80 1,5 1 HMB180 HMC180 HMD180 100 1,5 1 HMB190 HMC190 HMD190 125 1,5 1 HMB199 HMC199 HMD199 80 3 1 HMB280 HMC280 HMD280 100 3 1 HMB290 HMC290 HMD290 125 3 1 HMB299 HMC299 HMD299 80 4,5 1 HMB380 HMC380 HMD380 100 4,5 1 HMB390 HMC390 HMD390 125 4,5 1 HMB299 HMC399 HMD399 80 6 1 HMB480 HMC480 HMD480 100 6 1 HMB490 HMC490 HMD490 125 6 1 HMB499 HMC499 HMD499 In/A D curve HMC399 Three pole MCBs Four pole MCBs HMC499 4.09 Protection Devices Description Protection and control of circuits against overloads and short circuits. Circuit isolation. They can be used for installation in commercial building and industrial premises. Miniature Circuit Breakers 30kA Type B and C - HMJ, HMK Description Protection and control of circuits against overloads and short circuits. Circuit isolation. They can be used for installation in commercial building and industrial premises for high interrupt capacities. Technical data s breaking capacity : 30kA (IEC 60 947-2) Description Single pole MCBs Double pole MCBs HMK199 Three pole MCBs Four pole MCBs s curves : B curve : 3 to 5 In, C curve : 5 to 10 In s poles : 1PP, 2PP, 3PP, 4PP (protected poles) s voltage rating : 230/400V AC s current rating : 80 to 125A s frequency : 50/60Hz s will accept accessories s climate sealed : T2 Connection capacity rigid conductors : 70mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60 947-2. Width in ] 17.5mm Pack qty Cat. ref. B curve 80 1,5 1 HMJ180 HMK180 100 1,5 1 HMJ190 HMK190 125 1,5 1 HMJ199 HMK199 80 3 1 HMJ180 HMK180 100 3 1 HMJ290 HMK290 125 3 1 HMJ299 HMK299 80 4,5 1 HMJ380 HMK380 100 4,5 1 HMJ390 HMK390 125 4,5 1 HMJ399 HMK399 80 6 1 HMJ480 HMK480 100 6 1 HMJ490 HMK490 125 6 1 HMJ499 HMK499 In/A C curve HMK399 Accessories for MCBs HLE, HLF, HMB, HMC, HMD, HMK, HMJ, HMX MZN130 MZN131 4.10 Description Characteristics Cat. ref. Terminal cover / screw cap sealable screw cap MZN130 Phase separator 1 set of 3 pieces MZN131 Add-on Blocks Type AC for HMB, HMC, HMD, HMK, HMX, HLE and HLF Technical data s sensitivity : High sensitivity : 30mA instant WULSSLQJĺ[HG Medium sensitivity : P$LQVWDQWWULSSLQJĺ[HG 300mA, 500mA, 1A adjustable (selective or time delay) s time delay : 0ms, 60ms or 150ms s current rating : 125A s voltage rating : 240/400V AC s poles : 2P, 3P, 4P s types : AC and A/HI types s frequency : 50/60Hz s mounting type : side mounted s climate sealed : T2 Description 2 Technical information s AC type : Ensured for residual sinusoidal alternating currents, whether suddenly applied or slowly rising. It incorporates a ĺOWHULQJGHYLFHSUHYHQWLQJWKH risk of nuisance tripping due to the transient voltages (lightening, line disturbance on other equipment…) and transient currents (from high capacitive circuits). s A and HI type (reinforced immunity) : In addition to the characteristics of AC type, it ensured for residual pulsating direct currents, whether suddenly applied or slowly rising. They are used whenever fault currents are not sinusoidal. It reduces the unexpected tripping when they protect equipment generating I6n Double pole add-on block 1 Connection capacity rigid conductors : 70mm² ĻH[LEOHFRQGXFWRUVPP In/A disturbances like DC fault current (washing machines, speed drives, microprocessing, electronic ballast...). s Adjustable block : The setting is done by actuating the thumb wheel on the front face. The setting thumb wheels are protected by a transparent sealable cover. s Tightening compensation terminals : The circuit breakers block are equipped with screw terminals with tightening compensation, reinforced arch and cable holding jaws. These contributes to an effective tightening over time. Complies with IEC 61 009-1. Width in ] Pack 17.5mm qty Cat. ref. AC type A and HI type ĺ[HG 30mA BDC280E BDH280E 3 6 1 BTC280E 4 adjustable 125 0,3 - 0,5 - 1A inst. - - 150 ms ĺ[HG 30mA BDC380E BDH380E 5 6 1 BTC380E 6 adjustable 125 0,3 - 0,5 - 1A inst. - - 150 ms ĺ[HG 30mA BDC480E BDH480E ĺ[HG 300mA BFC480E BFH480E adjustable 125 0,3 - 0,5 - 1A inst. - - 150 ms 6 1 BTC480E BTH480E 2 BTH280E 4 BTH280E Three pole add-on block 1 2 3 4 2 4 BTH380E 6 BTH380E Four pole add-on block 1 3 5 7 2 4 6 8 2 4 6 8 BDC480E 4.11 Protection Devices Description When add-on block is associated with MCBs (HLE, HLF, HMB, HMC, HMD, HMJ, HMK, HMX), the complete unit provides an earth fault protection and protects against electrical shocks by direct or indirect contacts. They are designed to EHĺWWHGWRWKHULJKWKDQGVLGHRI 2, 3 and 4 poles MCBs. Add-on Block RCCB add-ons 3 sensitivities 30mA, 100mA and 300mA instantaneous. 2 sensitivities 100mA and 300mA time delayed. RCCB add-ons can be associated with devices rated from 0,5 to 63A in 2 and 4 poles. Connection capacity 63A = 16mm2 63A = 25mm2 Wiring diagram Characteristics Easy coupling (drawer system) Easy disassembly (without damage) Conforms to EN61009 appendix G Mounting 2 4.12 In 1 2 & 4 Pole RCBOs (Residual Circuit Breaker with Overload) B & C Curves Technical data s sensitivity: High sensitivity: 30mA instant WULSSLQJĺ[HG Medium sensitivity: 300mA LQVWDQWWULSSLQJĺ[HG s current rating: 6 to 40A s curves: B and C s voltage rating: 230V AC s A type s frequency: 50Hz Description Connection capacity rigid conductors: 25mm² ĻH[LEOHFRQGXFWRUVPP Approved according to EN 61009-1. Technical information s A type: Detects residual sinusoidal alternating currents, whether suddenly applied or slowly rising. They are used whenever fault currents are not sinusoidal. It is able to detect DC fault current generated by loads like washing machines, speed drives, microprocessing, electronic ballast. Breaking In/A capacity (IEC 60 898-1) Width in I Pack 17.5mm qty. Cat. ref. B curve RCBOs A type - 30mA 6kA 6A 10A 16A 20A 25A 32A 40A 2 2 2 2 2 2 2 1 1 1 1 1 1 1 AD906J AD910J AD916J AD920J AD925J AD932J AD940J RCBOs A type - 300mA 6kA 6A 10A 16A 20A 25A 32A 40A 2 2 2 2 2 2 2 1 1 1 1 1 1 1 6A 10A 13A 16A 20A 25A 32A 40A 4 4 4 4 4 4 4 4 1 1 1 1 1 1 1 1 6A 10A 13A 16A 20A 25A 32A 40A 4 4 4 4 4 4 4 4 1 1 1 1 1 1 1 1 AD916J RCBOs A type - 30mA 6kA RCBOs A type - 30mA 6kA C curve Protection Devices Description Compact protection devices which provide MCB overload protection and RCD earth leakage protection (protect against electrical shocks by direct or indirect contact). AF956J AF960J AF966J AF970J AF975J AF982J AF990J ADM406C ADM410C ADM413C ADM416C ADM420C ADM425C ADM432C ADM440C ADM456C ADM460C ADM463C ADM466C ADM470C ADM475C ADM482C ADM490C ADM456C 4.13 RCBO Single Pole 6kA Compact protection devices which combine the overcurrent functions of an MCB with the earth fault functions of an RCCB in a single unit. A range of sensitivity and current ratings are available for use in domestic installations. Technical Data Insulated DIN clip Complies with BS EN 61009-1, IEC61009-1, IEC610009-2-2, 6HQVLWLYLWLHVĺ[HG 10mA and 30mA Breaking capacity: 6kA Flying neutral lead: 200mm Terminal Capacities 25mm2 rigid, 16mm2ĻH[LEOH Operating Voltage 230V(AC) + 10%/-15% 50H Locking kit = MZN175 In/A Width in ] 17.5mm Sensitivity 30mA (6kA) Type B, AC Sensitive 6A 1 Mod ADN106 10A 1 Mod ADN110 16A 1 Mod ADN116 20A 1 Mod ADN120 32A 1 Mod ADN132 40A 1 Mod ADN140 45A 1 Mod ADN145 50A 1 Mod ADN150 6A 1 Mod ADA156U 10A 1 Mod ADA160U 16A 1 Mod ADA166U 20A 1 Mod ADA170U 32A 1 Mod ADA182U Sensitivity 30mA (10kA) Type C, DC Sensitive Description Characteristics Locking Kit This allows locking of the device toggle in the off position. Will accept two padlocks with hasps of 4.75mm diameter max. (supplied without padlock). 4.14 These devices are 1pole & solid neutral. Description ADN120 MZN175 Application 1 module devices provide a compact solution for installation in consumer units. Cat. ref. B curve Cat. ref. MZN175 RCBO (Commercial / Industrial) Single Pole 10kA Technical Data Insulated DIN clip Complies with BS EN 61009-1, IEC61009-1 6HQVLWLYLWLHVĺ[HG 10mA, 30mA & 100mA Breaking capacity: 10kA Flying neutral lead: 800mm Terminal Capacities 16mm2 rigid, 10mm2ĻH[LEOH Description In/A Sensitivity 10mA (10kA) Sensitivity 30mA (10kA) ACB125 ADB106 Sensitivity 100mA (10kA) These devices are single pole & solid neutral. Application 1 module devices provide a compact solution for installation in consumer units and Invicta 3 distribution boards. Width in ] 17.5mm Cat. ref. B curve C curve 6A 1 Mod ACB106 ACC106 16A 1 Mod ACB116 ACC116 25A 1 Mod ACB125 ACC125 32A 1 Mod ACB132 ACC132 6A 1 Mod ADB106 ADC106 10A 1 Mod ADB110 ADC110 16A 1 Mod ADB116 ADC116 20A 1 Mod ADB120 ADC120 25A 1 Mod ADB125 ADC125 32A 1 Mod ADB132 ADC132 40A 1 Mod ADB140 ADC140 45A 1 Mod ADB145 - 10A 1 Mod - AEC110 16A 1 Mod - AEC116 20A 1 Mod - AEC120 25A 1 Mod - AEC125 32A 1 Mod - AEC132 1 Mod ADA106U 1 Mod ADA110U 1 Mod ADA116U 1 Mod ADA120U 1 Mod ADA125U 1 Mod ADA132U AEC132 Sensitivity 10mA (10kA) Class A ADA106U Description Characteristics Locking Kit This allows locking of the device toggle in the off position. Cat. ref. MZN175 Will accept two padlocks with hasps of 4.75mm diameter max. (supplied without padlock). MZN175 4.15 Protection Devices Compact protection devices which combine the overcurrent functions of an MCB with the earth fault functions of an RCCB in a single unit. A range of sensitivity and current ratings are available for use in commercial and industrial applications. 2P & 4P RCCBs (Residual Current Circuit Breakers) Description Compact devices which provide RCD earth leakage protection (protect against electrical shocks by direct or indirect contacts).To open automatically in the event of an earth fault between phase and earth and/or neutral and earth. Technical data s sensitivity: High sensitivity: 30mA LQVWDQWDQHRXVWULSSLQJĺ[HG Medium sensitivity: 100mA, 300mA instantaneous or VHOHFWLYHWULSSLQJĺ[HG s current rating: 25 to 100A s voltage rating: 230V AC (2P) and 400V (4P) Description Complies with EN61008-1. Pack qty Cat. ref. 2P RCCBs A type 10mA 16A 1 CCA216U - RCCBs A type 30mA 25A 1 CDA225U CDA425U 40A 1 CDA240U CDA440U 63A 1 CDA263U CDA463U 80A 1 - CD480A 100A 1 - CD484A 125A 1 - CDA490 40A 1 CE240J CE440J 63A 1 CEA263N CE463J 80A 1 CE281J CE481J 100A 1 CE285J CE485J RCCBs A type Selective 100mA 100/A 1 CN284J CN484A RCCBs A type 300mA 25A 1 CF225J CF425J 40A 1 CF240J CF440J 63A 1 CF263J CF463J 80A 1 CF280C CF480C 100A 1 CF284C CF484C 80A 1 CP280E - 100A 1 CP284J CP484D RCCBs A type 100mA RCCBs A type Selective 300mA 4.16 Connection capacity s 25 to 63A: rigid conductors: 25mm ĻH[LEOHFRQGXFWRUVPP s 80 and 100A: rigid conductors: 50mm² ĻH[LEOHFRQGXFWRUVPP Technical information A type suitable for residual pulsating direct currents, whether suddenly applied or slowly rising. They are used whenever fault currents are not sinusoidal. Current rating CDA240U CF440J s poles: 2P and 4P s type: A s frequency: 50Hz 4P RCCBs Product presentation contact position indicator “Test” button (large dimensions) trip indication Contact positioning indicator Trip indicator The mechanical indicator on the front of RCCB shows the physical position of the contacts. s Red indication for closed contacts s Green indication for open contacts The status of the RCCB can be visualised by the colour of the trip indicator in addition to the position of the operating lever. s Grey indication for normal conditions (even when operating lever is in ON/OFF position) s Yellow indication for tripped condition, operating lever in OFF position. The green indication is the guarantee that the contacts are open and that the terminals are not live. Similar condition exists when TEST button is pushed or RCCB is remotely tripped via protection auxiliaries. Positive contact indication Earth leakage fault indication OFF OFF ON green red test grey yellow 4.17 Protection Devices ergonomic operating handle 2P & 4P RCCBs Residual current devices A residual current device (RCCB) is the generic term for a device which simultaneously performs the functions of detection of the residual current, comparison of this value with the rated residual operating value and opening the protected circuit when the residual current exceeds this value. Principle )RUĺ[HGGRPHVWLFLQVWDOODWLRQVDQGVLPLODUDSSOLFDWLRQVZHKDYHWZR types : s5HVLGXDOFXUUHQWRSHUDWHGFLUFXLWEUHDNHUZLWKRXWLQWHJUDO over-current protection (RCCBs) which should comply with the requirements of IEC 61 008 s5HVLGXDOFXUUHQWRSHUDWHGFLUFXLWEUHDNHUZLWKLQWHJUDORYHUFXUUHQW protection (RCBOs) which should comply with the requirements of IEC 61 009 I2 Id I1 Both RCCBs and RCBOs are further divided into types depending on their operating function : Ic Id Type AC For which tripping is ensured for residual sinusoidal alternating currents, whether suddenly applied or slowly rising. Marked with the symbol: Type A For which tripping is ensured for residual sinusoidal alternating currents and residual pulsating direct currents, whether suddenly applied or slowly rising. Marked with the symbol: Type S For selectivity, with time-delay. Marked with the symbol: RB RA &XUUHQWĻRZLQJWKURXJKWRUURLGLQKHDOWK\FLUFXLW Ires = I1-I2 = 0 &XUUHQWĻRZLQJWKURXJKWRUURLGLQFLUFXLWZLWKHDUWKIDXOW,3 Ires = I1-I2+I3 = I3 RCCBs must be protected against short-circuits by means of circuit-breakers or fuses. RCBOs have their own in built short-circuit protection, up to it’s rated value. Whole house protection is provided typically by a consumer unit where the RCCB device serves as the main switch. Although very popular this suffers from a disadvantage: all circuits are disconnected in the event of fault. Selective protection can be SURYLGHGE\DVVRFLDWLQJWKH5&&%ZLWKLGHQWLĺHGKLJKULVNFLUFXLWVE\ adopting one or more of the following : The drawing opposite shows how a torroid is located around the line DQGQHXWUDOFRQGXFWRUVWRPHDVXUHWKHPDJQHWLFĺHOGVFUHDWHGE\ WKHFXUUHQWĻRZLQJLQWKHVHFRQGXFWRUV7KHVXPRIWKHPDJQHWLF ĺHOGVVHWXSE\WKHVHFXUUHQWVZKLFKWDNHVLQWRFRQVLGHUDWLRQERWK the magnitude and phase relationship of the currents) is detected by the torroid. s 6SOLWEXVEDUFRQVXPHUXQLW All circuits are fed via an overall isolator and selected circuits fed additionally via the RCCB. Typical circuits fed direct are lighting, freezer, storage heating: and circuits fed via the RCCB are socket outlets, garage circuits. This concept minimises inconvenience in the event of fault. In a normal healthy circuit the vector sum of the current values added WRJHWKHUZLOOEH]HUR&XUUHQWĻRZLQJWRHDUWKGXHWRDOLQHHDUWK fault, will return via the earth conductor, and regardless of load FRQGLWLRQVZLOOUHJLVWHUDVDIDXOW7KLVFXUUHQWĻRZZLOOJLYHULVHWRD residual current (Ires) which will be detected by the device. Individual RCBO (DFKVHSDUDWHĺQDOFLUFXLWUHTXLULQJSURWHFWLRQE\D5&'FDQEH supplied through an RCBO. This method provides the best solution for minimising inconvenience. It is most important that the line and neutral conductors are passed through the torroid. A common cause of nuisance operation is the failure to connect the neutral through the device. RCCBs work just as well on three phase or three phase and neutral circuits, but when the neutral is distributed it must pass through the torroid. RCCBs are not suitable for use on DC systems and unearthed networks. RCCBs – domestic installation RCCBs can be installed in two ways: 1. whole house protection. 2. selective protection. Nuisance tripping $OO+DJHU5&&%VLQFRUSRUDWHDĺOWHULQJGHYLFHSUHYHQWLQJWKHULVNRI nuisance tripping due to transient voltages (lightning, line disturbances on other equipment...) and transient currents (from high capacitive circuit). Pulsating DC fault current sensitive Increasingly, semi-conductors are also extensively used in computers, VDUs, printers, plotters... all of which may be fed from the mains electrical supply. The presence of semi-conductors may result in the normal sinusoidal ACZDYHIRUPEHLQJPRGLĺHG)RU H[DPSOHWKHZDYHIRUPPD\EHUHFWLĺHGRUDVLQDV\PPHWULFSKDVH control devices, the waveform may be chopped. The resulting waveforms are said to have a pulsating DC component. In the event of an earth fault occurring in equipment containing semi-conductor devices, there is a probability that the earth fault current will contain a pulsating DC component. Standard type AC may not respond to this type of earth fault current and the intended degree of protection will not be provided. 4.18 RCCBs r9RU@KTDSNNGHFGSN@KKNVCHRBNMMDBSHNMHMSGDQDPTHQDCSHLD Where the overcurrent protection or a circuit breaker cannot provide GLVFRQQHFWLRQZLWKLQWKHVSHFLĺHGWLPHEHFDXVHWKHHDUWKIDXOWORRS impedance is too high the addition of RCCB protection may well solve the problem without any other change in the system. Because of its high sensitivity to earth fault current and its rapid operating time, in most cases the RCCB will ensure disconnection within the VSHFLĺHGWLPH7KLVLVDFKLHYHGZLWKRXWDQ\GHWULPHQWWRRYHUFXUUHQW discrimination because, unlike the situation in a fuse based system, the increased sensitivity is obtained without increasing sensitivity to overcurrent faults. Use of RCCBs in this way can be particularly useful for construction sites and bathrooms where disconnection times are more stringent than for standard installations. (Construction sites - 0.2s at 220-277V, bathrooms - 0.4s). The limitation to this technique is the requirement that the rated residual operating current multiplied by Zs should not exceed 50V. This is to avoid the danger of exposed conductive parts reaching an unacceptably high voltage level. Residual current protection can even be added to a completed distribution system where the value of Zs is excessive, either beFDXVHRIDGHVLJQRYHUVLJKWRUVXEVHTXHQWZLULQJPRGLĺFDWLRQ r/QNSDBSHNM@F@HMRSRGNBJAXCHQDBSBNMS@BS So far we have considered shock by indirect contact only. 'LUHFWFRQWDFWLVGHĺQHGWKXV Direct contact - contact of persons or livestock with live parts which may result in electric shock. The consideration here is not the hazard of parts becoming live as a result of a fault but the possibility of touching circuit conductors which are intentionally live. 10000 5000 high risk of lethal effects usually no harmful effects 2000 1000 2 3 4 500 tripping characteristic of 30mA RCD 200 100 50 20 10 1 2 5 10 20 body current 50 100 200 500 mA Note : Although RCCBs are extremely effective devices they must never be used as the only method of protection against electric shock. With or without RCCBs protection all electrical equipment should be kept in good condition and should never be worked on live. RCCBs, although affording good protection against the potentially lethal effects of electric shock, must not be used as a the sole means of protection against shock by direct contact. The Electricity at Work Act recommends the use of RCCBs, “....danger may be reduced by the use of a residual current device but states that this should be ”.... considered as a second line of defence”. The Wiring Regulations GHĺQHVWKHRWKHUPHDVXUHVWKDWVKRXOGEHWDNHQLH s insulation of live parts. s barriers or enclosures. s obstacles. s placing live parts out of reach. Additionally an RCCB used for this purpose should have: s a sensitivity of 30mA s an operating time not exceeding 40mS at a residual current of 150mA. 7KHVSHFLĺHGVHQVLWLYLW\LVEDVHGRQUHVHDUFKWKDWKDVEHHQFDUULHG out to estimate the effect various levels and duration of current can have on the human body. This experience is summarised in a graph shown in ‘IEC 479-1: Effects of current passing through the human ERG\p$VLPSOLĺHGYHUVLRQRIWKLVJUDSKLVVKRZQRSSRVLWH,WVKRZV that very small currents can be tolerated for reasonably long periods and moderate currents for very short periods. It can be seen, for instance, that 100mA for 100mS or 20mA for 500mS will not normally cause any harmful effect. 200mA for 200mS or 50mA for 500mS which are in Zone 3, would be more dangerous; and shock levels in Zone 4 carry a risk of lethal consequences. 4.19 Protection Devices RCCBs offer excellent protection against earth fault currents; the main areas of application being as follows: The tripping characteristic for a 30mA RCCB is also shown in the graph. It shows the level of current required to cause the RCCB to trip, for example; 50mA will cause a trip but not 10mA. Comparing its characteristic with the various zones on the graph it can be seen that the 30mA RCCB gives a very good measure of protection against the hazards associated with electric shock. Where a higher level of protection is required, for example in laboratories, 10mA devices are available. IEC 60 479-1 mS duration of current flow Use of RCCBs RCCBs r/QNSDBSHNM@F@HMRSRGNBJNTSRHCDSGDDPTHONSDMSH@KANMCHMF zone Bonding conductors are used in an installation to maintain metallic parts, as near as possible, to the same potential as earth. Working with portable equipment outside this equipotential bonding zone, e.g. in the car park of a factory, introduces additional shock hazards. Socket outlets rated 32A or less ‘which may be reasonably expected to supply portable equipment for use outdoors’ should have at least one socket nominated for outdoor use. This socket should be equipped with 30 mA RCCB protection unless fed from an isolating transformer or similar device, or fed from a reduced voltage. r/QNSDBSHNMHMRODBH@KRHST@SHNMR The use of RCCBs is obligatory or recommended in the following situations: - caravans: 30mA RCCB should be used. - TT systems. - swimming pools: 30mA RCCB for socket outlets in Zone B obligatory; recommended in Zone C. - agricultural and horticultural: 30mA RCCB for socket outlets and IRUWKHSXUSRVHRISURWHFWLRQDJDLQVWĺUH5&&%œ$ sensitivity. r/QNSDBSHNM@F@HMRSkQDG@Y@QCR The provisions in the Wiring Regulations for protection against shock by indirect contact ensure rapid disconnection under earth fault assuming the fault has negligible impedance. Under such FRQGLWLRQVWKHIDXOWFXUUHQWDVZHKDYHVHHQLVVXIĺFLHQWO\JUHDW to cause the overcurrent protection device to quickly disconnect the fault. However high impedance faults can arise where the fault FXUUHQWLVVXIĺFLHQWWRFDXVHFRQVLGHUDEOHORFDOKHDWZLWKRXWEHLQJ high enough to cause tripping of the overcurrent protective device. 7KHKHDWJHQHUDWHGDWWKHSRLQWRIWKHIDXOWPD\LQLWLDWHDĺUHORQJ before the fault has deteriorated into a low impedance connection to earth. The provision of residual current protection throughout a system or LQYXOQHUDEOHSDUWVRIDV\VWHPZLOOJUHDWO\UHGXFHWKHKD]DUGRIĺUH caused by such faults. r/$-BNMCTBSNQR The use of RCCBs with PEN conductors is prohibited. A PEN conductor is a single conductor combining the functions of neutral conductor and protective conductor. This being so, when the PEN conductor is taken through the torroid of an RCCB, earth faults will go undetected because the return path for the earth fault current is included in the residual sum. r TWHKH@QXBNMS@BSR A range of auxiliaries, alarm and shunt contacts are available for Hager RCCBs. - construction sites: 30mA RCCB recommended. r/NQS@AKDDPTHOLDMS :LWKWKHH[FHSWLRQPHQWLRQHGDERYHZKHUHDVRFNHWLVVSHFLĺFDOO\ designated for work outside the equipotential bonding zone, the Wiring Regulations demand the use of RCCBs to protect the users of portable equipment. It is widely recognised that their use has PDGHDVLJQLĺFDQWFRQWULEXWLRQWRVDIHW\LQWKHZRUNSODFHDQGWKH home. 4.20 r2TOOKXDMSQX Top or bottom feed. All auxiliaries are common to both single and multi-pole circuit breakers. 7KHVHDX[LOLDULHVDUHĺWWHGWRWKH left hand side of devices. indicator that indicates the automatic/remote tripping of the device. Use of MZ203 - MZ209 on RCCBs requires the use of interface auxiliary CZ001. Connection capacity 6 mm2 rigid cables 4 mm2ĻH[LEOHFDEOHV Complies with EN62019 and IEC60947-5-1. Characteristics Width in ] 17,5mm Cat. ref. 1NO + 1NC auxiliary contact indication of main contact status 0,5 MZ201 Alarm contacts SD contact indicates a fault overcurrent (e.g. MCB tripped) on overload or short-circuit. 0,5 MZ202 Shunt trips allows remote tripping of the device 24V - 415V AC 12V - 130V DC 1 MZ203 24V - 48V AC 12V - 48V DC 1 MZ204 48V DC 1 MZ205 230V AC 1 MZ206 1 MZ212 Shunt trips, and under-voltage UHOHDVHVDUHĺWWHGZLWKDĻDJ Description TWHKH@QXBNMS@BSR MZ201 Under voltage releases allows MCB to be closed only when voltage is above 70% of Un. MCB will automatically trip when voltage falls by 35% of Un. MZ203 Over voltage releases EN 50550 monitors the voltage between phase and neutral in a network. It opens the current circuit in case of over voltage by tripping the connected protection device (e.g. MCb or RCCB) 230V AC Locking kit MZ209 allows locking of the device dolly in the on/off position. Will accept two padlocks with hasps of 4,75 mm diameter max. Sealing kit Marking strip MZN175 MZN176 13 modules for modular devices MZN177 MZN175 4.21 Protection Devices Auxiliaries & Accessories for MCBs, RCCBs & RCBOs Auxiliaries for MCBs & RCCBs Functions Tripping and indication auxiliary contacts are common to the range of multi-pole 10kA MCBs, and RCCBs. They should be mounted on the left hand side of the device. TWHKH@QX"NMS@BS,9 Allows remote indication of the status of the device contacts to which it is associated. TWHKH@QX"NMS@BS@MC K@QL"NMS@BS,9 This accessory has two separate functions. Like the MZ201 auxiliary contact, however the alarm contact will provide indication if the breaker trips under fault conditions. MZ203 Shunt Trip* Allows tripping of the device by feeding the coil. The contacts also allow for remote indication of operation. MZ206 Under Voltage Release* Allows the MCB to trip when the voltage drops or by pressing a remote off switch (ie emergency stop). * Indication that the product has tripped due to the voltage release is SURYLGHGE\DĻDJRQWKHSURGXFW Wiring diagram MZ201 auxiliary contact or MZ202 alarm contact MZ206 under voltage release Ph N Ph N Electrical characteristics Electrical connection %\WHUPLQDOĺWWHGZLWKĺ[HGFODPSVFUHZVZLULQJFDSDFLW\ Flexible : 2 x 1.5mm2 Rigid : 2 x 1.5mm2 MZ201/MZ206 MZ203 MZ206 1xO1xC contact 230V AC 6A - AC1 230/415 V AC 110/130 ... 230V AC 50 Hz MZ203 Power - 8VA tolerance : -15% of Un MZ206 Latching voltage is between 35 and 70% of Un 230V AC Coil consumption 3VA &QNTOHMF"NLAHM@SHNMNE2DUDQ@K TWHKH@QHDR On 2, 3 and 4 pole MCBs it is possible to associate 3 auxiliaries – 2 indication auxiliaries and 1 release auxiliary. In this case, it is LPSRUWDQWWRĺUVWĺ[WKHLQGLFDWLRQDX[LOLDU\0=DQG0=DQG then the release auxiliary (MZ203 and MZ206). Flag indicating that the product has tripped due to the voltage release MZ203 to + MZ201 + MZ201 + MZ202 + MCB MZ206 MZ201 MZ201 MZ201 4.22 MZ203 to MZ212 HRC Fuse Carriers Technical data sVL]HV//// sSROHV3333 sYROWDJHUDWLQJ9$&9 AC sFXUUHQWUDWLQJWR$ sIUHTXHQF\+] sFOLPDWHVHDOHG7 sZLOODFFHSWDFFHVVRULHV sVKRUWFLUFXLWUHVLVWDQFHZLWK fuse link 8,5 x 31,5 mm : 80kA – 690V~ LS401 Connection capacity s/[ rigid conductors : 25mm² ĻH[LEOHFRQGXFWRUVPP s/[ rigid conductors : 25mm² ĻH[LEOHFRQGXFWRUVPP s/[ rigid conductors : 35mm² ĻH[LEOHFRQGXFWRUVPP s/[ rigid conductors : 50mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60 269-2, IEC 60 269-2-1 and IEC 60 947-3. Description Characteristics Width in ] 17,5 mm Pack qty. L31 fuse carriers 500V - 25A compatible with accessories single pole two pole three pole 3 phases + neutral link 1 phase + neutral link single pole with signal light 1 2 3 4 2 1 12 6 4 3 6 12 LS401 LS402 LS403 LS404 LS412 LS431 L38 fuse carriers 690V - 32A compatible with accessories single pole two pole three pole 3 phases + neutral link 1 neutral link 1 phase + neutral link single pole with signal light 1 2 3 4 1 2 1 12 6 4 3 12 6 12 LS501 LS502 LS503 LS504 LS509 LS512 LS531 L51 fuse carriers 690V - 50A s compatible with accessories : single pole two pole three pole 3 phases + neutral link 1 phase + neutral link 1,5 3 4,5 6 3 1 1 1 1 1 LS601 LS602 LS603 LS604 LS612 s accessory free: single pole two pole three pole 3 phases + neutral link 1 phase + neutral link 1,5 3 4,5 6 3 10 5 3 2 5 LR601 LR602 LR603 LR604 LR612 s accessoriable: single pole two pole three pole 3 phases + neutral link 1 phase + neutral link 2 4 6 8 4 1 1 1 1 1 LS701 LS702 LS703 LS704 LS712 s accessory free: single pole two pole three pole 3 phases + neutral link 1 phase + neutral link 2 4 6 8 4 6 3 2 1 3 LR701 LR702 LR703 LR704 LR712 LS703 L58 fuse carriers 690V - 125A LS670 Microswitches LS672 sVKRUWFLUFXLWUHVLVWDQFHZLWK fuse link 10,3 x 38 mm : 80kA – 690V~ / 120kA – 500 V~ sVKRUWFLUFXLWUHVLVWDQFHZLWK fuse link 14x51 mm : 100kA – 690V sVKRUWFLUFXLWUHVLVWDQFHZLWK fuse link 22x58 mm : 100kA – 690V Signal lights 230V Cat. ref. s for L51 fuse carriers : single pole three pole s for L58 fuse carriers : single pole three pole 1 1 LS670 LS671 1 1 LS770 LS771 for L51 and L58 fuse carriers 1 LS672 4.23 Protection Devices Description Protection and control of circuits against overloads and short circuits. HRC Fuse Carriers Withstand current correction table Microswitch sdepending on ambient temperature, sdepending on the proximity heating effect of the fuse carriers themselves when fully loaded and mounted together in groups. type fuse size L 38 10 x 38 L 51 14 x 51 L 58 22 x 58 In for Un 400 VM 32 A 50 A 125 A In for Un 500 VM 20 A 40 A 80 A 20° 1 1 1 30° 0,95 0,95 0,95 40° 0,90 0,90 0,90 50° 0,80 0,80 0,80 1 to 3 Ph 1 1 1 4 to 6 Ph 0,8 0,8 0,8 7 to 9 Ph 0,7 0,7 0,7 > 10 Ph 0,6 0,6 0,6 Microswitches functions mounting on L 51 et L 58, single pole or multi pole connection with lugs 5 mm Application s Fuse melting : a fuse-carrier containing a fuse-link with a striker that sends out a signal when the fuse element melts s Pre-cut : when the fuse-carrier opens s Presence : sends a signal when the fuse-carrier is closed with no fuse in it Signal light Mounting on L 51 and L 58 Padlocking and sealing of the others fuse carriers in “open” position Padlocking and sealing +2WW@MC+2WWHMgNODMuONRHSHNM ø 4,5 mm 4.24 Photovoltaic Fuse Carriers, SPD & Switch Disconnectors Technical data s sizes : L38 (10x38) s class of operation : gPV (PV fuse) s poles : 1P, 2P s voltage rating : 1000V DC for fuse carriers and 900V DC for fuses s fuse carriers current rating : 32A s fuses current rating : 2 to 20A s breaking capacity : 30kA s minimum Interrupting : 2 x In (2-3-4A), 1.9 x In (6-8-10-12A), 1.6 x In (16-20A) Connection capacity rigid conductors : 16mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60269-2, IEC 60269-2-1 and IEC 60947-3. Switch disconnectors Designed for photovoltaic applications but fully compatible to any DC purposes. Contact making and break independent to operator speed. Technical data s poles : 4P s voltage rating : 1000V DC 21B s current rating : 32A Connection capacity rigid conductors : 16mm² ĻH[LEOHFRQGXFWRUVPP Complies with IEC 60 947-3. Description In (A) Characteristics Pack qty. Cat. ref. L38 photovoltaic fuse carriers 1000V DC 32 single pole 12 L501PV 32 double pole 6 L502PV 2 10 LF302PV 3 10 LF303PV 4 10 LF304PV 6 10 LF306PV 8 10 LF308PV 10 10 LF310PV 12 10 LF312PV 16 10 LF316PV 20 10 LF320PV 1 SB432PV Photovoltaic cartridge fuses 900V DC L501PV DC switch disconnectors 32 4 poles, 1000 V DC Double pole polarized surge protection devices photovoltaic Ucpv ) 1000V DC 25kA, 4kV, class 2 with end of life indicator SPN325 SB432PV 4.25 Protection Devices Photovoltaic fuse carriers and fuses DC protection of photovoltaic strings against overload and short-circuits. Motor Starters Description To ensure localised control and protection of single and three phase motors. The rated motor current is set on the motor starter units by means of a current dial (in the front). Technical data s$GMXVWDEOHWKHUPDOUHOD\ MZ520N MZ528N MZ521N 4.26 MZ527N Options Undervoltage release: MZ528N, MZ529N Auxiliary contacts: MZ520N, MZ522N Alarm contact: MZ527N Shunt trip: MZ523N Complies with IEC/EN 60947 for low voltage switchgear. The motor outgoer wiring should be implemented in compliance to IEC/EN 60947-1 table 9. Standard power rating of 3 phase motors 50/60 Hz (AC3) 230v (kW) 400V (kW) Width in ] Motor starters current range 0,1 to 0,16A - - - MM501N 0,16 to 0,25A - 0,06 2,5 MM502N 0,25 to 0,4A 0,06 0,09 2,5 MM503N 0,4 to 0,63A 0,09 0,12 2,5 MM504N 0,63 to 1,0A 0,09 0,12 2,5 MM505N 1,0 to 1,6A 0,25 0,55 2,5 MM506N 1,6 to 2,5A 0,55 0,8 2,5 MM507N 2,5 to 4A 0,8 1,5 2,5 MM508N 4 to 6,3A 1,5 2,5 2,5 MM509N 6,3 to 10A 2,5 4 2,5 MM510N 10 to 16A 4 7,5 2,5 MM511N 16 to 20A 5,5 9 2,5 MM512N 20 to 25A 7,5 12,5 2,5 MM513N Description Characteristics Width in ] TWHKH@QXBNMS@BSR indicates ON/OFF position. 1C + 1O 2A AC1 - 400V AC 3,5 A - 230V AC 0,5 MZ520N %QNMS@TWHKH@QXBNMS@BSR cannot be mounted at the back of a modular panel 1C - 230-400V AC - 1A 0,5 MZ522N Shunt trip 230V AC Alarm contacts mounted inside the motor starter 1C 2A AC1 - 400V AC / 3,5A AC1 - 230V AC Undervoltage releases prevent automatic restarting of the controlled device 230V AC 50 Hz MZ528N 400V AC 50 Hz MZ529N Surface mounting enclosures weatherproof IP55 with a removable window w.78 x h.150 x d.125 mm MZ521N Emergency stop button IP65, mounted on surface mounting enclosure MZ521N without key MZ530N with key MZ531N Description MM501N s$&XWLOLVDWLRQFDWHJRU\ s&RQQHFWLRQFDSDFLW\ conductor cross-sections of the motor cables: ĻH[LEOHWRPP2 rigid 1 to 6mm2 Cat. ref. Cat. ref. MZ523N 0,5 MZ527N Motor Starters Conditional rated short-circuit current @BBNQCHMFSN($"$- Electrical characteristics s(OHFWULFDOVXSSO\9a s$PELHQWWHPSHUDWXUHUDQJH 25°C to +55°C 7KHLQĻXHQFHRIWKHDPELHQWWHPSHUDWXUHRQWKHGHĻHFWLRQRIWKH bimetallic releases is automatically compensated within a temperature range from -5 to +40°C by means of an additional current-free bimetallic release that continuously corrects the tripping range. s:RUNLQJOLIHRSHUDWLRQV$& s0D[LPXPRIRSHUDWLRQVKRXU s7URSLFDOL]HGIRUDOOFOLPDWHV s&RQQHFWLRQZLWKFODPSW\SHIROORZLQJFRQGXFWRUFURVVVHFWLRQVRI the motor cables: ĻH[LEOHWRPP2 rigid : 1 to 6mm2 Electrical connection single phase 230V 400V 440V 500V 690V Icu Icu Icu Icu Icu (kA) (A)1) (kA) (A)1) (kA) (A)1) (kA) (A)1) (kA) (A)1) MM501N 150 N 150 N 100 N 100 N 100 N MM502N 150 N 150 N 100 N 100 N 100 N MM503N 150 N 150 N 100 N 100 N 100 N MM504N 150 N 150 N 100 N 100 N 100 N MM505N 150 N 150 N 100 N 100 N 100 N MM506N 150 N 150 N 100 N 100 N 100 N MM507N 150 N 150 N 100 N 100 N 5 50 MM508N 150 N 150 N 100 N 100 N 3 50 MM509N 150 N 150 N 100 N 42 50 3 50 MM510N 150 N 150 N 42 50 42 50 3 50 MM511N 50 50 50 50 15 50 15 50 3 50 MM512N 50 50 50 50 10 50 6 50 3 50 MM513N 50 50 50 50 10 50 6 50 3 50 no upstream protective device required, since this is an inherent stable range (100/150 kA) N not required 1) primary fusing is required if the short-circuit current exceeds the conditional rated short-circuit current (Icc > Icu). The conditional rated short-circuit current is determined by the primary fuse used: 100A gG/gL, Icu = 30kA 50A gG/gL, Icu = 100kA Tripping characteristic Tripping time (s) Í Under voltage release (no volt coil) MZ528N MZ529N 230V~ 400V~ TWHKH@QXBNMS@BSR,NTMSDCHMRHCDRS@QSDQ MZ520N 2A – 400V~ 3.5A – 230V~ K@QLBNMS@BS,NTMSDCTMCDQRS@QSDQ MZ527N 2A – 400V~ 1A – 230V~ x Rated current Í 4.27 Protection Devices 3DBGMHB@KRODBHkB@SHNMR Surge Protection Devices Type 1+2 Description The combined surge protection devices offer as an “all-in-one solution” lightning and surge-voltage in one device. They are in accordance with the requirement class type 1. 3 versions available, with or without auxiliary contact: s631IRU71&1HWZRUNV 75kA (lighting impulse current) s631IRU7161HWZRUNV 100kA (lighting impulse current) s631IRU771HWZRUNV 100kA (lighting impulse current) SPN800R Description Characteristics No of poles Surge protection devices, type 1+2, for TNC-Networks with auxiliary contact 3 SPN800R without auxiliary contact 3 SPN800 with auxiliary contact 4 SPN801R without auxiliary contact 4 SPN801 with auxiliary contact 4 SPN802R without auxiliary contact 4 SPN802 Surge protection devices, type 1+2, for TNS-Networks Surge protection devices, type 1+2, for TT-Networks SPN801 Product features s/LJKWQLQJDQGVXUJHYROWDJH protection in one device, s&RQIRUPLQJWR(1 requirement class type 1+2, sUHSODFHDEOHSOXJLQPRGXOHV sLQWHJUDWHGIDXOWLQGLFDWRULQWKH plug-in modules, s63'VZLWKVHSDUDWHDX[LOLDU\ contact. Cartridges phase - 25kA for SPN8xxx neutral - 25kA class 1 for SPN802 and SPN802R SPN080 4.28 Cat. ref. SPN080 SPN080N Surge Protection Devices Type 2 These transients can cause premature ageing of equipment, downtime, or complete destruction of electronic components and materials. SPDs are strongly recommended in installations that are exposed to transients, to protect sensitive and expensive electrical equipment such as TV, video, washing machines, Hi-Fi, PC, alarm etc. The range of SPDs is separated into 2 types of protection: 1. Main protection - class 2 SPDs with higher discharge current (Imax 8/20), to evacuate as much of the transient to earth as possible, 2. Fine protection - class 2 + 3 SPDs with low voltage protection level (Up ≤ 1,2kV), to cut-down the transient surge as low as possible to protect very sensitive equipment. Technical data Complies with EN61643-U signalling (R versions only) 230V~ 1A 12V ... 10mA Installation and Connection The main protection SPDs are installed directly after the main incoming switch or RCCB (type S). SPDs can be used in any supply system e.g TNCS, TNS, TT. Options: Spare cartridges. Connected in parallel to the equipment to be protected. Protection is assured in both common and differential modes. The choice of SPD depends on a number of criteria such as: s7KHH[SRVXUHRIWKHEXLOGLQJWR transients. s7KHVHQVLWLYLW\DQGYDOXHRI s5HVHUYH6WDWXV,QGLFDWRU (R versions) s(QGRI/LIH,QGLFDWRU (D versions) Auxiliary contact for remote Description Characteristics Single pole surge protection devices Un: 230/400V 50/60Hz 40kA, 2kV, class 2 with end of life indicator SPN140D Double pole surge protection devices Un: 230/400V 50/60Hz 65kA, 1,3kV, class 2 with reserve and remote contact SPN265R 40kA, 1,2kV, class 2 with reserve and remote contact SPN240R 40kA, 1,2kV, class 2 with end of life indicator SPN240D 15kA, 1kV, class 2 with reserve and remote contact SPN215R 15kA, 1kV, class 2 with end of life indicator SPN215D 65kA, 1,5kV, class 2 with reserve and remote contact SPN465R 40kA, 1,2kV, class 2 with reserve and remote contact SPN440R 40kA, 1,2kV, class 2 with end of life indicator SPN440D 15kA, 1kV, class 2 with reserve and remote contact SPN415R 15kA, 1kV, class 2 with end of life indicator SPN415D SPN240D Four pole surge protection devices Un: 230/400V 50/60Hz SPN440R the electrical equipment that requires protection. s(DUWKLQJV\VWHP s/HYHORISURWHFWLRQ Cat. ref. 4.29 Protection Devices Description SPD’s protect electrical and electronic equipment against transients, originating from lightning, switching of transformers, lighting and motors. Surge Protection Devices Type 2 Spare cartridges These cartridges replace the cartridge in the main SPD. They allow simple replacement without the need to cut-off the power supply. For Phase: SPN140D = SPN040D SPN215D = SPN015D SPN415D = SPN015D SPN215R = SPN015R SPN415R = SPN015R Cartridges are available for all discharge currents (40kA and 15kA) with and without condition indication. For Neutral / Earth SPN215D = SPN040N SPN415D = SPN040N SPN215R = SPN040N SPN415R = SPN040N A keying system exists to prevent a line cartridge being interchanged by mistake with a neutral one and vice versa. Neutral cartridges have a discharge current of 65kA. Description Characteristics Cat. ref. Spare cartridge phase 65kA, 275V AC for SPNx65R SPN065R 40kA, 440V AC for SPN140C SPN040C 40kA, 275V AC for SPNx40R SPN040R 40kA, 275V AC for SPNx40D SPN040D 15kA, 275V AC for SPNx40R SPN015R 15kA, 275V AC for SPNx40D SPN015D 65kA, 255V AC for SPNx65R SPN065N 40kA, 255V AC for SPNx40x and SPNx15x SPN040N SPN040C Spare cartridge neutral SPN040N Cartridge for photovoltaic SPDs photovoltaic Ucpv ) 1000V DC SPV025 4.30 polarized +/- for SPV325 earth for SPV325 SPV025 SPV025E Surge Protection Devices with Low Voltage Protection Level SPDs with low let through voltage levels To protect very sensitive electronic equipment. 7KLVĺQHSURWHFWLRQ complements the main protection and can protect 1 or several electronic devices. Discharge current: Imax. 8kA (8/20 wave) A green LED on the front face indicates the status of the SPD SPN208S, connected in series with the equipment that needs to be protected (with a maximum line current of 16A). Protection is assured in both common and differential modes. Connection capacity Terminal blocks L, N & E sULJLGFRQGXFWRUPP2 sĻH[LEOHFRQGXFWRUPP2 Description Characteristics Width in ] #NTAKDONKDkMDOQNSDBSHNM surge protection devices Uc: 230/400V 50/60Hz 8kA, 1,2kV, class 2 with light indicator 2 SPN208S %NTQONKDkMDOQNSDBSHNM surge protection devices Uc: 230/400V 50/60Hz 8kA, 1,2kV, class 2 with light indicator 3 SPN408S Description Characteristics Width in ] SPD for analogical phone line Un: 130V, Up: 600V AC 1,5 SPN505 SPD for numerical phone line Un: 40V, Up: 600V AC 1,5 SPN504 Cat. ref. Protection Devices Optimal coordination is obtained when cascaded with a main protection device (lower Up). SPN208S Surge Protection Devices for Telephone Lines Cat. ref. SPN505 4.31 Surge Protection Devices Type 1+2 SPD references SPN800 SPN801 SPN802 Standards / approval EN61643-11 EN61643-11 EN61643-11 L1/L2/L3 Í PE L1/L2/L3/N Í PE L1/L2/L3/N Í PE Type / Class T1/ I / B T1/ I / B T1/ I / B Installation of SPD in parallel in parallel in parallel Earthing system TN-C TN-S TT Protection mode common common common and differential Nominal voltage (Un) 230/400 V AC 230/400 V AC 230/400 V AC Max. continuous operating voltage (Uc) 255 V AC 255 V AC 255 V AC Voltage protection level (Up) ) 1,5 kV ) 1,5 kV ) 1,5 kV Temporary overvoltage (Ut) 440 V / 5 s 440 V / 5 s 440 V / 5 s Nominal current I (L) 315 Aeff 315 Aeff 315 Aeff Nominal current (I (L-L’) 125 Aeff 125 Aeff 125 Aeff 'LVFRQQHFWLRQYDOXH,ĺ 50 kAeff 50 kAeff 50 kA 100 kA Discharge current capacity (8/20) nominal current (In) 75 kA 100 kA 25 kA 100 kA Shock current (10/350) (Iimp) 75 kA 100 kA 25 kA 100 kA Residual current IPE ) 100 μA ) 100 μA ) 100 μA Max. upstream protection - fuse 125 A gL/gG in series or 315 A in parallel 125 A gL/gG in series or 315 A in parallel 125 A gL/gG in series or 315 A in parallel Max. upstream protection - MCB 125 A in series or 160 A in parallel curve C 125 A in series or 160 A in parallel curve C 125 A in series or 160 A in parallel curve C Max. short-circuit resistance with max. upstream protection - fuse 50 kA eff ac 50 kA eff ac 25 kA eff ac Max. short-circuit resistance with max. upstream protection - MCB 50 kA eff ac 50 kA eff ac 25 kA eff ac Temps de réponse (tA) ) 100 ns ) 100 ns ) 100 ns Working temperature -40°C to +60°C -40°C to +60°C -40°C to +60°C Indication (disconnection device) green - red light on L1, L2, L3 green - red light on L1, L2, L3, N green - red light on L1, L2, L3, N 10 mm2ULJLGĻH[LEOH 10 mm2ULJLGĻH[LEOH Connection capacity 10 mm2ULJLGĻH[LEOH min. L1, L2, L3, PE - max. L1’, L2’, L3’, PE’ N Í PE 1200 V / 200 ms Connection capacity max. L1, L2, L3, PE 50 mm2 multi-wired 35 mm2ĻH[LEOH 50 mm2 multi-wired 35 mm2ĻH[LEOH 50 mm2 multi-wired 35 mm2ĻH[LEOH Connection capacity max. L1’, L2’, L3’, PE’ 50 mm2 multi-wired 25 mm2ĻH[LEOH 50 mm2 multi-wired 25 mm2ĻH[LEOH 50 mm2 multi-wired 25 mm2ĻH[LEOH Terminals tightening torque 7,0 Nm 7,0 Nm 7,0 Nm Mounting on DIN rail 35 mm (EN 60715) DIN rail 35 mm (EN 60715) DIN rail 35mm, conform to EN 60715 Case material thermoplastic, grey color, UL 94V-0 thermoplastic, grey color, UL 94V-0 thermoplastic, grey color, UL 94V-0 Degree of protection IP20 IP20 IP20 Size 6 ] , DIN 43880 6 ] , DIN 43880 8 ] , DIN 43880 Weight 970 g 1260 g 1272 g Approval VDE VDE VDE Auxiliary contact references 2/-12/-V@TWBNMS@BS 2/-12/-V@TWBNMS@BS 2/-12/-V@TWBNMS@BS Contact type changeover changeover changeover Electrical characteristics (Un/In) AC: 250V/0,5A AC: 250V/0,5A AC: 250V/0,5A DC: 250V/0,1A ; 125V/0,2A ; 75V/0,5A DC: 250V/0,1A ; 125V/0,2A ; 75V/0,5A DC: 250V/0,1A ; 125V/0,2A ; 75V/0,5A Min. connection capacity 0,25 mm2ULJLGĻH[LEOH 0,25 mm2ULJLGĻH[LEOH 0,25 mm2ULJLGĻH[LEOH Max. connection capacity 1,5 mm2PXOWLZLUHGĻH[LEOH 1,5 mm2PXOWLZLUHGĻH[LEOH 1,5 mm2PXOWLZLUHGĻH[LEOH Installation in parallel TN-C Installation in parallel TN-S F Installation in parallel TT F IN L1 L1' L1 L1' L1 L1' L2 L2' L2 L2' L2 L2' L3 L3' L3 L3 L3' PEN PEN N L3' N' N N' PE PE’ S2 S2 S2 L1 L1 L1' L2 L2' L3 L3' SPN800 - SPN800R L1 L1' L2 L2' L3 L3' N N' L1' L2 L2' L3 L3' N N' SPN802 - SPN802R SPN801 - SPN801R PE PEN PE PE S3 S3 4.32 S3 Surge Protection Device Type 2 & Fine Protection Class II - Overvoltage protection High Medium Fine Reference SPN140D SPN215D SPN215R SPN415D SPN415R SPN208S Installation exposure level (risk) high medium medium medium medium low Installation of SPD parallel parallel parallel parallel parallel series Number of poles 1P 1P+N 1P+N 3P+N 3P+N 1P+N Number of modules 1 2 2 4 4 2 Nominal current - - - - - - Nominal voltage Un (V) 230 230 230 400 400 230/400 Frequency (Hz) 50/60 50/60 50/60 50/60 50/60 50/60 Operating temperature range -40°C to +60°C -40°C to +60°C -40°C to +60°C -40°C to +60°C -40°C to +60°C -40°C to +60°C Storage temperature range -40°C to +70°C -40°C to +70°C -40°C to +70°C -40°C to +70°C -40°C to +70°C -40°C to +70°C common mode 275 275 275 275 275 440 differential mode - - - - - 255 Max. continuous operating voltage Uc (V) Voltage protection level Up (kV) differential mode 1,2 1,2 1,0 1,0 1,0 1,0 1,0 nominal current In 15 5 5 5 5 2 maximum current Imax 40 15 15 15 15 8 20kA 10kA 10kA 10kA 10kA 6A Protection Devices common mode Discharge current wave 8/20 μs (kA) Short circuit withstand with max. backup fuse or MCB max. backup fuse 25A 10A 10A 10A 10A 25A backup MCB (C curve) 25A 25A 25A 25A 25A 25A 1. three stage indication - green, green/red, red (R versions) yes N/A yes N/A yes N/A 2. basic indication - green/red (D versions) N/A yes N/A yes N/A N/A 3. green LED is on when SPD is working N/A N/A N/A N/A N/A yes industrial and commercial buildings yes yes yes yes yes yes domestic buildings yes yes yes yes yes End of life indication (fault indication) Applications Imax In Up Uc Uoc Isc Un MOV SPD yes The maximum value of current that the SPD can withstand and remain operational. The nominal value of current that the SPD can withstand at least 20 times and still be serviceable. The residual voltage that is measured across the terminal of the SPD when In is applied. The maximum voltage which may be continuously applied to the SPD without conducting. Open circuit voltage under test conditions. Short circuit current under test conditions. The nominal rated voltage of the installation Metal Oxide Varistor Surge Protective Device 4.33 Surge Protection Devices How to choose your surge protection device The choice of surge protection device depends on your supply arrangements and level of protection required. Products to be used in a Earthing system TN-C TN-C-S (P-M-E) Type of protection transient voltage surges (8/20ms) connection class II main protection Imax = 40kA or 15kA (depending on selection) Single phase installation Three phase installation SPN140D 1xSPN415D/SPN415R N L1 L2 L3 N E E L parallel SPN208S class II ĺQHSURWHFWLRQ Up < 1kV L parallel N E class II main protection Imax = 15kA Imax = 15kA TN-S TT parallel transient voltage surges (8/20ms) SPN215D/SPN215R 1xSPN415D/SPN415R L N L1 L2 L3 N E E SPN208S class II ĺQHSURWHFWLRQ Up < 1kV L parallel N E Connections SPN140D 4.34 SPN265R SPN415D/R SPN208S Circuit Protection Electric shock Electric shock is divided into two parts: s direct contact: contact with parts which result in an electric shock in normal service s indirect contact: contact with exposed conductive parts which result in an electric shock in case of a fault. To protect against direct contact the Wiring Regulations suggest the following basic measures should be taken: (1) by insulation of live parts (2) by enclosures or barriers (3) by obstacles (4) by placing out of reach To protect against indirect contact the Wiring Regulations suggest the following basic measures should be taken: (1) earthed equipotential bonding and automatic disconnection of supply (2) use of class II equipment or equivalent insulation (3) non-conducting location (4) earth-free local equipotential bonding (5) electrical separation 2IWKHVHĺYHPHDVXUHVWKHĺUVWLVE\IDUWKHPRVWFRPPRQO\XVHG (1) earthed equipotential bonding and automatic disconnection of supply: In each installation main equipotential bonding conductors shall connect the main earthing terminal of the installation; this metalwork comprises exposed conductive parts which are part of the electrical installation itself and extraneous conductive parts including the following: s main water pipes s gas installation pipes s other service pipes and ducting s risers of central heating and air conditioning systems s exposed metal parts of the building structure This bonding creates a zone within which any voltages appearing between exposed conductive parts and extraneous conductive parts, are minimised; the earth fault loop impedance must have an value ORZHQRXJKWRDOORZVXIĺFLHQWFXUUHQWWRĻRZIRUWKHFLUFXLWSURWHFWLYH device to operate rapidly to disconnect the supply; disconnection PXVWEHVXIĺFLHQWO\IDVWVRWKDWYROWDJHVDSSHDULQJRQWKHERQGHG metalwork cannot persist long enough to cause danger; depending on the operating characteristics of the protective device and the earth impedance, such disconnection may be achieved either by overcurrent devices, Fuses, Miniature Circuit Breakers, (i.e. MCBs) or by Residual Current Devices, (i.e. RCCBs). Thermal Effect Refers to heat generated by the electrical equipment in normal use and under fault conditions. The proper selection of equipment complying with the latest product standards is essential in providing protection against thermal effects. Overcurrent 'HĺQHGDVDFXUUHQWH[FHHGLQJWKHUDWHGYDOXHRIWKHFLUFXLW components. It may be caused by the overloading of a healthy circuit RULWPD\WDNHWKHIRUPRIDVKRUWFLUFXLWFXUUHQWGHĺQHGDVDQ “overcurrent resulting from a fault of negligible impedance between live conductors having a difference in potential under normal operating conditions”. Overcurrent protection may be provided by using fuses or circuit breakers singly or in combination. Undervoltage Refers to the dangers that could be caused by the reduction or loss in voltage and the subsequent restoration, such as the unexpected re-starting of motors or the automatic closing of protective devices. The proper selection of control and protective devices must take the protection against undervoltage into consideration. Isolation Every circuit shall be provided with means of isolation (except in certain cases) to prevent or remove hazards associated with the installation, equipment and machines. The new standards for circuit breakers and switch-fuses now take this into account. Protection against shock by indirect contact Indirect contact - is the contact of persons or livestock with exposed conductive parts made live by a fault and which may result in electric shock. An example would be where the insulation of an electric heater has broken down resulting in a live conductor internally touching the casing. This could result in the heater casing being raised to a hazardous voltage level, causing electric shock to a person touching it. Two important measures must be taken to prevent this hazard: s the impedance of circuit conductors is kept to a minimum. The eartfault loop impedance (Zs) is used as a measure of the circuit impedance under fault conditions. s the overcurrent device protecting the circuit is selected to rapidly disconnect an earth fault. The effect of these two measures is inter-related. 1. By ensuring that the circuit protective conductor is of a low impedance, the voltage to which the live casing is raised, under fault conditions, is kept to a minimum. 2. The low impedance path provided by the circuit conductors and the circuit protective conductor will result in a high level of current in the event of an earth fault. This high fault current ensures that the overcurrent protective device will disconnect the fault in a short time, reducing the interval during which the casing of the faulty equipment is live. R1 transformer winding L1 consumer's terminals load load terminals Ze N E R2 Components of earth fault loop impedance (Zs) in a system. (Earth fault at load between conductor and casing). Zs = Ze 11 +R2 $@QSGE@TKSKNNOHLODC@MBD9s 7RHQVXUHWKHLPSHGDQFHRIFRQGXFWRUVLQDFLUFXLWLVVXIĺFLHQWO\ORZ the system designer has to establish the value of the earth fault loop impedance. Zs - is a measure of the earth fault current loop, comprising the phase conductor and the earth conductor. It comprises the complete loop including the winding of the transformer from which WKHFLUFXLWLVVXSSOLHGDVGHĺQHGE\WKHIROORZLQJ Ze - is the part of the earth fault loop impedance external to the installation, its value can be measured or a nominal value can be obtained from the supply authority. 4.35 Protection Devices Basic Principles The proper selection of the correct circuit protective device requires an understanding of the potential hazards against which protection for safety is required. The Wiring Regulations identify several hazards: s electric shock s thermal effects s overcurrent s undervoltage s isolation Circuit Protection Therefore: Zs = Ze + (R1 + R2) Once the value of Zs has been established a suitable overcurrent protective device has to be selected to ensure disconnection of an HDUWKIDXOWZLWKLQWKHVSHFLĺHGWLPH7KHWLPHVDUH sVHFRQGVIRUĺ[HGHTXLSPHQW s)RUSRUWDEOHHTXLSPHQWDQGIRUĺ[HGHTXLSPHQWLQVWDOOHGRXWVLGH the equipotential bonding zone, the disconnection times are dependent on the nominal voltage to earth, i.e. 220 to 277 volts = 0.4 seconds. therefore be Uo/Zs = 240/0.7 = 343A By referring to the characteristic for MT132 (see diagram below) it can be seen that the breaker will disconnect in 0.02 seconds for this curUHQW7KHEUHDNHUWKHUHIRUHHDVLO\VDWLVĺHVWKHUHTXLUHPHQWIRUGLVFRQnection in 5 seconds. If the circuit Zs was 2.0 ohms then the fault current would be: 240/2 = 120A and the disconnection time would be 10 seconds, in which case compliance would not be achieved. time/current characteristics MT132 t (s) 11 +R2- where R1 is the resistance of the phase conductor within the installation and R2 is the resistance of the circuit protective conductor. These two components constitute the loop impedance within the installation. An earth fault current of 343A causes a trip of the magnetic protection in 20mS. 10 Zs by calculation To establish whether the relevant disconnection time can be achieved a simple calculation must be made, based on Ohm’s law: Uo (open circuit voltage)* If (fault current) = Zs (earth fault loop) * voltage between phase and earth (240V) 0,02 115 The fault current (If) must be high enough to cause the circuit SURWHFWLYHGHYLFHWRWULSLQWKHVSHFLĺHGWLPH7KLVFDQEHHVWDEOLVKHG by consulting the time/current characteristic for the protective device. If the maximum trip time for the fault current calculated is less than or HTXDOWRWKHUHOHYDQWYDOXHVIRUĺ[HGHTXLSPHQWVIRUSRUWDEOH equipment) then compliance is achieved. It is important that when consulting the characteristic curve the worst case is used, i.e. the maximum tripping time including any tolerance. An example is shown in Figs 1 and 2. Zs by tables The above procedure can be used for any type of protective device providing a time/current characteristic curve is available. Frequently, however, a much simpler method is available using tables listing maximum Zs values which have been interpreted from the characteristic curves for the relevant devices. Providing the system Zs is equal to or less than the value given in the table, compliance is achieved. Tables for a number of ‘standard’ devices (certain fuses and MCBs) are given in the Wiring Regulations. Zs too high If the system Zs value is too high to achieve rapid enough disconnection with the overcurrent protective devices available then it is necessary to use one of the two following methods: sĺWDFDEOHZLWKDODUJHUFURVVVHFWLRQDQGFRQVHTXHQWO\DORZHU impedance. This may be a very expensive solution especially when the installation is complete before the problem is discovered. sXVHD+DJHUUHVLGXDOFXUUHQWGHYLFH5&'6XEMHFWWRFHUWDLQ conditions being met this provides a simple and economical solution. Example If = 343A MT 132 L1 load Zs = 0,7 ohms N E 'LDJUDPDERYHVKRZVDĺ[HGFLUFXLWZLWKDQHDUWKORRSLPSHGDQFH=s of 0.7 ohms protected with an MT 132. The fault current (If) will 4.36 An earth fault current of 120A causes a trip of the thermal protection in 10 seconds. 328 I (A) Protection against overcurrent Overcurrent - “A current exceeding the rated value. For conductors the rated value is the current-carrying capacity” Overload Current “An overcurrent occurring in a circuit which is electrically sound” Short-Circuit Current “An overcurrent resulting from a fault of negligible impedance between live conductors having a difference in potential under normal operating conditions.” Protection against Overload Current For the protection against overload current, protective devices must EHSURYLGHGLQWKHFLUFXLWWREUHDNDQ\RYHUORDGFXUUHQWĻRZLQJLQWKH circuit conductors before it can cause a temperature rise which would be detrimental to insulation, joints, terminations or the surroundings of the conductors. In order to achieve this protection the nominal current of the protective device In should be not less than the design current of the circuit Ib and that In should not exceed the current-carrying capacity of the conductors Iz, and that the current causing effective operation of the protective device I2 does not exceed 1.45 times the currentcarrying capacity of the conductor Iz, expressed as Ib ) In ) Iz I2 )1.45Iz Protection against Short-Circuit Current Protective devices must be provided to break any short-circuit current before it can cause danger due to thermal and mechanical (electro-dynamic) effects produced in the conductors and connections. The breaking capacity of the protective device shall not be less than the prospective short-circuit current at the point at which the device is installed. However a lower breaking capacity is permitted provided that a properly co-ordinated back-up device having the necessary breaking capacity is installed on the supply side. Positioning of Overcurrent Devices Devices for the protection against overload and short-circuit must be placed at the point where a reduction occurs in the current-carrying capacity of the conductors. This reduction could be caused by a change in the environmental conditions as well as the more obvious change in the cross-sectional area of the cable. There are of course exceptions to this general rule which relate to a very few special applications. These are set out in detail in the the Wiring Regulations. Miniature Circuit Breakers Ue : Ui : Uimp : Icm : Icn : Ics : Icu : I6n : In: 6t: rated service voltage rated insulation voltage (> Uemax) rated impulse withstand rated short circuit making capacity rated short circuit capacity rated service short circuit breaking capacity rated ultimate short circuit breaking capacity rated residual operating current (often called residual sensitivity) rated current = maximum value of current used for the temperature rise test trip delay of residual current devices In addition IEC 898 sets out to provide a greater degree of safety to the uninstructed users of circuit breakers. It is interesting to note that the description “miniature circuit breaker” or MCB is not used at all in this standard, but no doubt both manufacturers and users will continue to call circuit breakers complying with IEC 898 miniature circuit breakers or MCBs for some time to come. The scope of this standard is limited to ac air break circuit breakers for operation at 50Hz or 60Hz, having a rated current not exceeding 125A and a rated short-circuit capacity not exceeding 25kA. A rated service short-circuit breaking capacity Ics is also included which is equal to the rated short-circuit capacity Icn for short-circuit capacity values up to and including 6kA, and 50% of Icn above 6kA with a minimum value of 7.5kA. As the circuit- breakers covered by this standard are intended for household and similar uses, Ics is of academic interest only. The rated short-circuit capacity of a MCB (Icn) is the alternating component of the prospective current expressed by its r.m.s. value, which the MCB is designed to make, FDUU\IRULWVRSHQLQJWLPHDQGWREUHDNXQGHUVSHFLĺHGFRQGLWLRQV,cn LVVKRZQRQWKH0&%ODEHOLQDUHFWDQJXODUER[ZLWKRXWWKHVXIĺ[o$p and is the value which is used for application purposes. Icn (of the MCB) should be equal to or greater than the prospective short-circuit current at the point of application. You will see from the curves that the inverse time delay characteristic which provides overload protection is the same on all three. This is because the Standards requires the breaker to carry 1.13 times the rated current without tripping for at least one hour and when the test current is increased to 1.45 times the rated current, it must trip within one hour, and again from cold if the last current is increased to 2.55 times the rated current the breaker must trip between 1 and 120 seconds. The inverse time delay characteristic of all MCBs claiming compliance with IEC 898 must operate within these limits. The difference between the three types of characteristic curves designated ‘B’, ‘C’ and ‘D’ concerns only the magnetic instantaneous trip which provides short-circuit protection. s)RUW\SHo%pWKHEUHDNHUPXVWWULSEHWZHHQWKHOLPLWVRIWRWLPHV rated current s)RUW\SHo&rWKHEUHDNHUPXVWWULSEHWZHHQWKHOLPLWVRIWR times rated current, and s)RUW\SHo'pWKHEUHDNHUPXVWWULSEHWZHHQWKHOLPLWVRIWR times rated current. Often manufacturers publish their MCB tripping characteristics showing the limits set by the standard and guarantee that any breaker that you purchase will operate within these limits. So great care should be taken when working with characteristic curves showing lower and higher limits - on no account should you take a mean point for application design purposes. For cable protection applications you should take the maximum tripping time and some manufacturers publish single line characteristic curves which show the maximum tripping time. If the design problem is nuisance tripping then the minimum tripping time should be used and for desk top co-ordination studies, both lower and upper limits have to be taken into account. Energy limiting Energy is measured in Joules. *James Prescott Joule proved that WKHUPDOHQHUJ\ZDVSURGXFHGZKHQDQHOHFWULFFXUUHQWĻRZHG through a resistance for a certain time, giving us the formula : Joules = I2 x R x t or because we know that watts = I2R Joules = watts x seconds Therefore we can say that : One Joule = one watt second or energy = watts x seconds = I2 R t If the resistance (R) remains constant or is very small compared with the current (I) as in the case of short-circuit current, then energy becomes proportional to I2t. Which is why the energy let-through of a protective device is expressed in ampere squared seconds and referred to as I2t I2t (Joule Integral) is the integral of the square of the current over a given time interval (t0, t1) The I2t characteristic of a circuit breaker is shown as a curve giving the maximum values of I2t as a function of the prospective current. Manufacturers are required by the Standard to produce the I2t characteristic of their circuit breakers. 2DDOQDUHNTRO@FD The energy limiting characteristics of modern MCBs greatly reduce the damage that might otherwise be caused by short-circuits. They SURWHFWWKHFDEOHLQVXODWLRQDQGUHGXFHWKHULVNRIĺUHDQGRWKHU damage. Knowledge of the energy limiting characteristic of a circuit breaker also helps the circuit designer calculate discrimination with other protective devices in the same circuit. Because of the importance of the energy limiting characteristic the Standards for circuit breakers for household and similar installations suggests three energy limiting classes based on the permissible I2t (let-through) values for circuit breakers up to 32A; class 3 having the highest energy limiting performance. All Hager MCBs are well within the limits of energy let-through set by IEC 898 for energy limiting class 3. 4.37 Protection Devices Both of the new International Standards covering Low Voltage Circuit Breakers provide the user with a better assurance of quality and performance by taking into account the actual operating conditions RIWKHEUHDNHU1HZGHĺQLWLRQVDQGV\PEROVKDYHEHHQLQWURGXFHG which should be committed to memory. Some of those most frequently used are: Miniature Circuit Breakers Circuit Protection Breaking capacity according to IEC/EN 60 898 and IEC/EN 60 947-2 References MJN MHN MLN poles Ph+N Ph+N Ph+N Ph+N 2 to 40 6 to 40 6 to 40 nominal current 2 to 40 In (A) WWWW WWWW breaking capacity to IEC/EN 60 898 230V 4500A 6000A 4500A 6000A 400V - - - - breaking capacity to IEC/EN 60 947-2 230V 6kA 7,5kA 6kA 10kA 400V - - - - References MV MW poles 1 nominal current 6 to 40 In (A) MT MU MBN MCN MB MC NGN 2, 3, 4 1 2, 3, 4 1 2, 3, 4 1 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 1 6 to 40 6 to 40 6 to 40 6 to 63 6 to 63 0,5 to 63 0,5 to 63 0,5 to 2 3 to 6 2, 3, 4 6 10 to 63 10 to 63 breaking capacity to IEC/EN 60 898 230V 3000A 4500A 6000A 10000A 6000A 10000A 6000A 10000A - - - 6000A 10000A 400V - 3000A - 6000A - 6000A - 6000A - - - 6000A 6000A breaking capacity to IEC/EN 60 947-2 230V 4,5kA 6kA - - 6kA 10kA 10kA 20kA 80kA 50kA 30kA 10kA 20kA 400V 3kA 4,5kA - - 3kA 3kA 3kA 10kA 80kA 50kA 30kA 3kA 10kA References NBN, NCN NDN poles 1, 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 1 nominal current 0,5 to 2 3 to 6 In (A) NQN, NRN, NSN 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 1, 2, 3, 4 6 10 to 63 10 to 63 0,5 to 2 3 to 6 6 6 to 25 32 to 40 50 to 63 breaking capacity to IEC/EN 60 898 230V - - - 10000A - - - - - - - 400V - - - - 10000A - - - - - - breaking capacity to IEC/EN 60 947-2 230V 80kA 50kA 30kA 15kA 20kA 80kA 50kA 30kA 25kA 20kA 15kA 400V 80kA 50kA 30v 3kA 15kA 80kA 50kA 30kA 25kA 20kA 15kA References HLE HLF poles 1 nominal current 80 to In (A) 125 HMB, HMC HMD HMJ HMK HMX 2, 3, 4 1 2, 3, 4 1 2, 3, 4 1 80 to 125 80 to 125 80 to 125 80 to 125 80 to 125 2, 3, 4 10 to 63 10 to 63 breaking capacity to IEC/EN 60 898 230V 15kA 10kA 15kA - - 400V 10kA 10kA 15kA - - breaking capacity to IEC/EN 60 947-2 4.38 230V 15kA 15kA 30kA 60kA 100kA 400V 10kA 10kA 15kA 30kA 50kA SelectivityCircuit & Discrimination Miniature Breakers Typical RCCB time/current characteristics 2 Time Delay Range 1 Note that the limit of discrimination is the instantaneous setting of the associated circuit breaker. In other words if the earth fault current is greater than the instantaneous trip setting of the associated circuit breaker, the circuit breaker will trip regardless of the time delay on the RCCB. The table below indicates how time discrimination may be achieved between RCCBs. IΔn 3A IΔn 1A 0.1 0.05 IΔn 0.3A 0.2 IΔn 0.1A 0.5 IΔn Total Operating Time (Seconds) 10 Having decided on the type and the limit of discrimination of the circuit breakers in the system, it is very important to consider the discrimination between any add on RCCBs. In theory it is possible to achieve current discrimination between RCCBs but the limit of discrimination is too low for practical purposes. Time discrimination is by far the best method and is achieved by delaying the tripping of the upstream RCCB. Instantaneous Trip 0.02 0.01 0.01 0.05 0.1 0.5 1 IΔn 5 10 100 1000 Current (Amperes) Up-stream RCCB sensitivity I6n Downstream RCCB sensitivity I6n Time delay (sec.) 0,01A 0 0,03A 0 0,01A 0,03A 0,1A 0 0 0 0,3A 0,2 0 1,0A 0,2 0,3 1,0 3,0 0 3,0A 0,3 1,0 3,0 0 0,3 1,0 3,0 0 0,1A 0,2 0 0,2 0,3A 0,3 1,0 3,0 0 0,3 1,0A 2,0 3,0 0 0,3 3,0A 1,0 3,0 Discrimination achieved 4.39 Protection Devices Limit of discrimination instantaneous trip of associated circuit breaker Use of MCBs in DC Systems DC applications Because of their quick make and break design and excellent arc quenching capabilities, Hager circuit breakers are suitable for use on DC. When selecting a circuit breaker for any DC application it is necessary to consider 2 main points: @RXRSDLUNKS@FD The system voltage and the type of system determines the number of poles required to provide the necessary breaking capacity and arc control. The table gives the maximum DC voltage and breaking capacity for one pole or two poles connected in the series: The positioning of these breaking poles in the system depends on whether the system is earthed or insulated and if it is earthed whether one polarity is earthed or the centre point is earthed. ASXODNE#"RXRSDLRCHEEDQDMSSXODR s Network connected to the earth - one polarity earthed (+ve or -ve): If -ve is earthed, all poles will be placed in series in the +ve leg. If the +ve is earthed, all poles will be placed in the -ve leg. Note: an extra pole will be needed on the earthed polarity to provide isolation. s Network connected to the earth - middle point earthed: The number of poles required to break Isc should be placed on each polarity. s Network insulated to the earth: The number of poles required to break Isc should be split between the two polarities. nb of poles in series needed for breaking )48V 60V 1P 15 - - - - 2P 20 20 - - - 3P 25 25 20 - - 4P 35 35 25 - - 1P 15 15 10 - - 2P 20 20 15 6 - 3P 25 25 20 10 - 4P 35 35 25 15 10 1P 25 25 20 - - 2P 35 35 25 15 - 3P 40 40 35 20 - 4P 45 45 40 25 10 1P 20 20 15 - - 2P 25 25 20 10 - 3P 30 30 30 15 - 4P 35 35 35 20 10 1P 15 15 10 - - 2P 20 20 15 6 - 3P 25 25 20 10 - 4P 35 35 25 15 10 1P HMB, HMC, 80 to 2P HMD, 125A 3P HMK, HMJ 4P 1P 10 to 2P HMX 63A 3P 15 15 10 - - 20 20 15 6 - 30 30 30 15 - 35 25 35 35 25 35 35 20 25 20 15 10 - 40 40 35 20 - 4P 45 45 40 25 10 1P 12 12 8 - - 80 to 2P 125A 3P 15 15 10 4 - 25 25 25 10 - 4P 30 30 30 15 5 range NGN, NBN0,5 WWW -"-to WWW 63A -#-WWW 0,5 to 20A NRN NSN, NQN 25 to 40A 50 and 63A Í Í Í 3 It1 It2 Irm1 Irm2 AC M 50Hz 1,13 In 1,45 In 3 In 5 In DC ... 1,13 In 1,45 In 4 In 7 In AC M 50Hz 1,13 In 1,45 In 5 In 10 In DC ... 1,45 In 7 In 15 In curve B curve C 1,13 In AC M 50Hz 1,13 In 1,45 In 10 In 20 In DC ... 1,45 In 15 In 30 In curve D 1,13 In In MT, MU, 0,5 MB, MC, MV, MW, to ,!-WWW 63A ,"-WWW Information To disconnect under load, use a DC switch SB432PV (32A - 1000V DC). Table 2 magnetic trip breaking capacity (kA) L/R = 15ms Table 1 '+%WWW2 '+$WWW2 125V 250V 500V BD@QSGHMFRXRSDLSXODR earthing diagrams TT, TNS, TNC IT system isolated to the earth a polarity connected to earth U load s Network connected to the earth - one polarity earthed (+ve or -ve): If -ve is earthed, all poles will be placed in series in the +ve leg. If the +ve is earthed, all poles will be placed in the -ve leg. 4.40 earthed center point U/2 U/2 load U U/2 load s Network connected to the earth s Network insulated to the earth: s middle point earthed: The number of poles required The number of poles required to to break Isc should be split break Isc should be placed on between the two polarities. each polarity. Z load U/2 s Network connected to the earth s middle point earthed: The number of poles required to break Isc should be placed on each polarity. Characteristics of MCBs in DC $W@LOKDRNE333-23-"D@QSGHMFRXRSDLR Protection of a 32A circuit under U = 48V DC voltage with earthed negative polarity and 15kA short circuit current (Icc). a) without negative polarity breaking b) with negative polarity breaking a) - + - + b) MC132A + - e) - charge load + MW320 f) - + - + MW420 charge load charge load Protection of a 40A circuit under U = 500V DC voltage with earthed negative polarity and 10kA short circuit current (Icc). a) without negative polarity breaking g) Protection of a 20A circuit under U = 125V DC voltage with middle point earthed and 15kA short circuit current (Icc). c) Icc under U/2 = 72,5V MW420 charge load 125V DC ) U ) 500V DC MC232A charge load Protection of a 20A circuit under U = 125V DC voltage with earthed negative polarity and 15kA short circuit current (Icc). a) without negative polarity breaking b) with negative polarity breaking d) - + c) MC232A charge load 48V DC ) U ) 125V DC Protection of a 32A circuit under U = 48V DC voltage with middle point earthed and 15kA short circuit current (Icc). c) Icc under U/2 = 24V Protection Devices 24V DC ) U ) 48V DC - Protection of a 40A circuit under U = 500V DC voltage with middle point earthed and 10kA short circuit current (Icc). c) Icc under U/2 = 250V h) - + NCN440A NCN440A charge load charge load $W@LOKDRNE(3D@QSGHMFRXRSDL 24V DC ) U ) 125V DC Protection of a 16A circuit under U = Protection of a 16A circuit under U = 120V DC voltage supplied by a 4kA 120V DC voltage supplied by an Icc isolated battery. impedant middle point battery delivering 4kA short circuit current. U/2 = 60V i) - + j) - + NFN216 charge load MU216A charge load 4.41 Miniature Circuit Breakers Energy let through at 230V MCB range: MHN MCB range: MJN, MLN 10000 4000 1000 400 energy let through in kA2s i energy let through in kA2s i 100 40 40 A 10 4 32 A 25 A 20 A 16 A 10 A, 13 A 4 A, 6 A 2A 1 0,4 0,1 0,04 0,01 0,004 0,001 0,0004 0,0001 0,5 1 4 10 40 100 1000 10000 Icc (A) i 100000 Icc (A) i Energy let through at 400V MCB range: MV, MT, MB, MBN MCB range: MW, MU, MC, MCN 10000 10000 63 A 63 A 50 A 50 A 40 A 40 A 32 A 1000 32 A 1000 25 A 25 A 20 A 20 A 16 A 16 A 13 A 13 A 50 A, 63 A 32 A, 40 A 20 A, 25 A 13 A, 16 A 10 A 6A energy let through in kA2s i 100 6A 10 1 MV, MB, MBN 10 A 100 energy let through in kA2s i 10 A 50 A, 63 A 32 A, 40 A 20 A, 25 A 13 A, 16 A 10 A 6A 6A 3 A, 4 A 4A 1 A, 2 A 3A 10 0.5 A 2A 1A 1 0.5 A 0.1 0.1 MU, MC, 6000 MV 3000 MCN 0.01 0.01 0.001 0.001 0.0001 0.1 1 10 100 1000 Icc (A) 4.42 10000 i 100000 0.0001 0.1 MW 1 10 100 1000 Icc (A) 10000 i 100000 Miniature Circuit Breakers MCBs 1,5 module/pole: temperature correction factor according to @LAH@MSSDLODQ@STQDMNLHM@KU@KTDRENQQDESDLODQ@STQD§" (M §" §" §" §" §" §" §" §" §" §" §" (M §" §" §" §" §" §" §" §" §" §" §" 0,5 1 1,5 1,6 2 3 3,5 4 5 6 7,5 8 10 13 15 16 20 25 30 32 35 40 45 50 63 10 13 15 16 20 25 30 32 35 45 50 63 80 100 125 0,54 1,08 1,62 1,73 2,16 3,24 3,78 4,32 5,4 6,48 8,1 8,64 10,8 14,0 16,2 17,3 21,6 27 32,4 34,6 37,8 44,8 50,4 56 - 0,52 1,04 1,56 1,66 2,08 3,12 3,64 4,16 5,2 6,24 7,8 8,32 10,4 13,5 15,6 16,6 20,8 26 31,2 33,3 36,4 41,6 46,8 52 - 0,5 1 1,5 1,6 2 3 3,5 4 5 6 7,5 8 10 13 15 16 20 25 30 32 35 40 45 50 63 0,48 0,96 1,44 1,54 1,92 2,88 3,36 3,84 4,8 5,76 7,2 7,68 9,6 12,5 14,4 15,4 19,2 24 28,8 30,7 33,6 38,4 43,2 48 60,5 0,46 0,92 1,38 1,47 1,84 2,76 3,22 3,68 4,6 5,52 6,9 7,36 9,2 12,0 13,8 14,7 18,4 23 27,6 29,4 32,2 36,8 41,4 46 58,0 0,44 0,88 1,32 1,41 1,76 2,64 3,08 3,52 4,4 5,28 6,6 7,04 8,8 11,4 13,2 14,1 17,6 22 26,4 28,2 30,8 35,2 39,6 44 55,4 0,42 0,84 1,26 1,34 1,68 2,52 2,94 3,36 4,2 5,04 6,3 6,72 8,4 10,9 12,6 13,4 16,8 21 25,2 26,9 29,4 33,6 37,8 42 52,9 0,8 1,2 1,28 1,6 2,4 2,8 3,2 4 4,8 6 6,4 8 10,4 12 12,8 16 20 24 25,6 28,0 32 36 40 50,4 0,76 1,14 1,22 1,52 2,28 2,66 3,04 3,8 4,56 5,7 6,08 7,6 9,9 11,4 12,2 15,2 119 22,8 24,3 26,6 30,4 34,2 38 47,9 0,72 1,08 1,15 1,44 2,16 2,52 2,88 3,6 4,32 5,4 5,76 7,2 9,4 10,8 11,5 14,4 18 21,6 23,0 25,2 28,8 32,4 36 45,4 0,68 1,02 1,09 1,36 2,04 2,38 2,72 3,4 4,08 5,1 5,44 6,8 8,8 10,2 10,9 13,6 17 20,4 21,8 23,8 27,2 30,6 34 42,8 &QNTOHMFE@BSNQQ@SDCBTQQDMSQDCTBDAXE@BSNQ* -NNETMHSRM *FQNTOHMFE@BSNQ n=1 œQ œQ œQ 1 0,95 0,9 0,85 Note: if the design current of a circuit (Ib) is less than 0,85 times the nominal setting of the circuit beaker (In) grouping can be ignored. Installation sZRUNLQJSRVLWLRQYHUWLFDOO\KRUL]RQWDOO\RUĻDW s supply: feed from either top or bottom terminals. 10,8 14,04 16,2 17,28 21,6 27 32,4 34,56 37,8 43,2 54 68,04 86,4 108 - 10,4 13,52 15,6 16,64 20,8 26 31,2 33,28 36,4 41,6 52 65,52 83,2 104 - 10 13 15 16 20 25 30 32 35 45 50 63 80 100 125 9,6 12,48 14,4 15,36 19,2 24 28,8 30,72 33,6 38,4 48 60,48 76,8 96 120 9,2 11,96 13,8 14,72 18,4 23 27,6 29,44 32,2 36,8 46 57,96 73,6 92 115 8,8 11,44 13,2 14,08 17,6 22 26,4 28,16 30,8 35,2 44 55,44 70,4 88 110 8,4 10,92 12,6 13,44 16,8 21 25,2 26,88 29,4 33,6 42 52,92 67,2 84 105 8 10,4 12 12,8 16 20 24 25,6 28 32 40 50,4 64 80 100 7,6 9,88 11,4 12,16 15,2 19 22,8 24,32 26,6 30,4 38 47,88 60,8 76 95 7,2 9,36 10,8 11,52 14,4 18 21,6 23,04 25,2 28,8 36 45,36 57,6 72 90 HMX MCBs: temperature correction factor according to ambiant SDLODQ@STQDMNLHM@KU@KTDRENQQDESDLODQ@STQD§" (M §" §" §" §" §" §" §" §" §" §" §" 10 16 20 25 32 40 50 63 80 100 125 11,6 18,56 23,2 29 37,12 46,4 58 73,08 92,8 116 - 11,2 17,92 22,4 28 35,84 44,8 56 70,56 89,6 112 - 10,8 17,28 21,6 27 34,56 43,2 54 68,04 86,4 108 - 10,4 16,64 20,8 26 33,28 41,6 52 65,52 83,2 104 - 10 16 20 25 32 40 50 63 80 100 125 9,6 15,36 19,2 24 30,72 38,4 48 60,48 76,8 96 120 9,2 14,72 18,4 23 29,44 36,8 46 57,96 73,6 92 115 8,8 14,08 17,6 22 28,16 35,2 44 55,44 70,4 88 110 8,4 13,44 16,8 21 26,88 33,6 42 52,92 67,2 84 105 8 12,8 16 20 25,6 32 40 50,4 64 80 100 %'Y K 162/3 Hz 60 Hz 1 100 Hz 200 Hz 400 Hz 1,1 1,2 1,5 "BTQUD@S§"($" #BTQUD@S§"($" MCB range: MHN, MV, MT, MB, MBN, NBN, NQN, HLE, HMB, HMJ MCB range: MLN, MJN, MW, MU, MC, MCN, NRN, HLF, HMC, HMK, HMX, Ax8xxx, Ax9xxx MCB range: NGN, NDN, NSN, HMD 1000 600 400 200 200 100 60 40 100 60 40 2 1 0,6 0,4 time in seconds i 1000 600 400 time in seconds i 10000 6000 4000 3600 2000 time in seconds i 10000 6000 4000 3600 2000 10 6 4 B 0,2 20 10 6 4 2 1 0,6 0,4 0,2 0,1 0,1 0,04 0,04 0,02 0,02 0,01 0,004 0,01 0,004 1 1,5 1,13 1,45 2 3 4 7,6 12,16 15,2 19 24,32 30,4 38 47,88 60,8 76 95 %QDPTDMBX s thermal: unchanged sPDJQHWLFYDOXHPXOWLSOLHGE\FRHIĺFLHQW. !BTQUD@S§"($" 20 6,8 8,84 10,2 10,88 13,6 17 20,4 21,76 23,8 27,2 34 42,84 54,4 68 85 6 8 10 15 20 30 40 current in multiple of rated current i D 1 current in multiple of rated current i 1,5 1,13 1,45 2 3 4 6 8 10 15 20 30 40 current in multiple of rated current i 4.43 Protection Devices MCBs 1 module/pole: temperature correction factor according to @LAH@MSSDLODQ@STQDMNLHM@KU@KTDRENQQDESDLODQ@STQD§" Miniature Circuit Breakers Energy let through at 400V MCB range: NCN, NFN, NRN NBN NQN NEN MBN MB energy let through in kA2s i energy let through in kA2s i MCB range: NBN, NEN, NQN NRN NKN NCN NFN MCN MC Icc (A) i energy let through in kA2s i MCB range: NDN, NGN NDN NSN NGN Icc (A) i 4.44 Icc (A) i Miniature Circuit Breakers Energy let through at 400V MCB range: HLF, HMC, HMK Icc (A) i Icc (A) i MCB range: HMD Protection Devices energy let through in kA2s i energy let through in kA2s i MCB range: HLE, HMB, HMJ MCB range: HMX energy let through in kA2s i energy let through in kA2s i 63 A 50 A 40 A 32 A 25 A 20 A 16 A 10 A Icc (A) i Icc (A) i 4.45 Miniature Circuit Breakers Current limitation at 400V MCB range: MW, MU, MC, MCN MCB range: MV, MT, MB, MBN 10000 10000 50 A, 63 A 32 A, 40 A 20 A, 25 A 13 A, 16 A 10 A 13 A, 16 A 10 A 6A 6A 3 A, 4 A 3 A, 4 A 1 A, 2 A 1 A, 2 A peak current in kA i peak current in kA i 50 A, 63 A 32 A, 40 A 20 A, 25 A 0.5 A 0.5 A MU, MC, MCN 1000 1000 MN 6000 MT, MB, MBN MV 3000 100 100 100 1000 10000 100000 short circuit current i peak current in kA i MCB range: NBN, NCN, NQN, NRN, MC, MB NRN NRN NQN NKN NEN MB NFN MC 100 500 1000 5000 10000 40000 short circuit current i 4.46 100 1000 10000 short circuit current i 100000 Miniature Circuit Breakers Current limitation at 400V MCB range: HLE, HLF, HMB, HMC, HMJ, HMK peak current in kA i peak current in kA i MCB range: NDN, NGN, NSN NDN NSN short circuit current i short circuit current i MCB range: HMD Protection Devices NGN MCB range: HMX 2 63 A, 50 A 40A 32 A, 25A 20 A 16 A peak current in kA i peak current in kA i 10 A short circuit current i short circuit current i 4.47 Discrimination Co-Ordination between circuit protective devices The proper co-ordination of two circuit protective devices is essential LQDOOLQVWDOODWLRQVLQRUGHUWRIXOĺOWKHUHTXLUHPHQWVRIWKH:LULQJ Regulations which set out to ensure the safe continuity of supply of electrical current under all conditions of service. If a fault does occur, the circuit protective device nearest the fault should operate, allowing the device immediately upstream to continue to supply healthy circuits. This is called discrimination. Sometimes the upstream device is selected to protect the downstream device(s) against high prospective short circuit currents and will operate to provide this protection should the actual short circuit current rise to a level which cannot be handled by the device nearest the fault. This is called back-up protection and devices should be so chosen as to allow discrimination up to the point the back-up device takes over. Discrimination Discrimination, which is sometimes called selectivity, is the co-ordination of two automatic circuit protective devices in such a way that a fault appearing at any given point in an installation is cleared by the protective device installed immediately upstream of the fault and by that device alone. $W@LOKD A the right). For this example the time/current characteristics of a 32A type ‘B’ circuit breaker complying with BS EN 60898, with a 100A category ‘A’ circuit breaker to BS EN 60947 Part 2 are checked for current discrimination. Because the thermal characteristic curve of the upstream circuit breaker clears the knee of the characteristic curve of the smaller downstream breaker, it can be said that overload discrimination is achieved under all conditions. However because the instantaneous characteristic curves cross at 0.01 sec, short-circuit discrimination is limited up to the point they cross, which in this case is approximately 2.7kA. The point at which the two time/current characteristics cross is called the limit of discrimination or selectivity. In this example the level of discrimination Is is 2.7kA, so we only have partial discrimination between these two devices. Time discrimination Time discrimination is achieved by delaying the opening of the upstream circuit breaker until the downstream circuit breaker haopened and cleared the fault. The total clearing time of the downstream circuit breaker must be less than the time setting of the upstream circuit breaker and the upstream circuit breaker must be able to withstand the fault current for the time setting period. Therefore the upstream circuit breaker must be a category ‘B’ breaker which has been designed and tested for this purpose. To determine time discrimination it is only necessary to compare the time/current characteristic curves of the two devices to ensure that no overlap occurs. A Upstream breaker H630/630A Category B B C )DXOWRFFXUVGRZQVWUHDPRIĺQDOVXEFLUFXLWGHYLFHq&r$OORWKHU protective devices remain closed ensuring continuity of supply to the rest of the installation. When this ideal situation is achieved under all conditions it is called “total discrimination”. Discrimination between two protective devices can be based on either the magnitude of the fault which is called “current discrimination” or the duration of the time the upstream device can withstand the fault current; this is called “time discrimination”. Current discrimination In order to achieve “current discrimination” in a distribution system it is necessary for the downstream device to have a lower continuous current rating and a lower instantaneous tripping value than the upstream device. Current discrimination increases as the difference between the continuous current ratings of the upstream and downstream devices increases. A simple way of checking current discrimination at both overload and short-circuit conditions is to compare the time/current characteristic curves of both devices plotted to the same scale. Transparency overlays, if available, make this task much easier (see diagram on 4.48 Total Operating Time (seconds) 1000 100 10 Downstream breaker H400/250A Category A 1 0.1 0.01 100 1000 10000 Current (Amperes) Short circuit discrimination A more accurate way of checking the discrimination between two circuit protective devices at short circuit levels is to compare the energy let-through of the downstream device with the no-tripping or pre-arcing energy levels of the upstream device. In order to check current discrimination at short circuit levels between: Fuse Upstream - Fuse Downstream It is only necessary to compare the I2t values of each fuse. This information is usually available in very simple tabular form (see Table 1 page D.61). If the total let-through energy (I2t) of the downstream fuse is less than the pre-arcing energy (I2t) of the upstream fuse, then total discrimination is achieved at short-circuit levels. Discrimination Rated current Pre-arching I2t J 2R Total I2t J 2R 10 0,07 0,25 16 0,17 0,45 20 0,31 0,90 25 0,62 1,90 32 1,00 3,0 40 2,1 8,0 50 7,0 17 63 11 30 80 22 70 Back-up protection co-ordination 100 39 100 125 62 170 160 101 300 200 190 500 Back-up Protection Sometimes known as cascading, when the energy limiting capacity of an upstream breaker is used to allow the use of a downstream circuit breaker having a short circuit breaking capacity (Icu) lower than the prospective fault level at the point at which it is installed. 315 480 1100 400 800 2100 500 1100 3100 630 1800 5000 It should be noted that when two circuit protective devices are used in association to improve the short-circuit capacity of the downstream device, total selectivity can never be achieved up to the assigned breaking capacity of the association. The upstream device must at some point operate to provide the necessary protection to the downstream circuit breaker. This point, which is known as the take-over current, must not be greater than the rated short-circuit capacity of the downstream circuit breaker alone. It therefore follows that the limit of selectivity IS will be less than the take-over current IB. See Diagram above. Table 1 MCB total let-through energy MCB In Total let-through energy kA2s at PSCC 3kA 6kA 10kA 6 5,9 10,5 15 10 6,5 12,2 21,5 16 8,0 17,5 30 20 8,8 19,5 34 25 10 21 38 32 11 24 42 40 12,5 29 50 50 15 34 61 63 16 38 72 Table 2 Example A panelboard is to be installed at a point where the prospective fault level is 25kA. 250A incoming and 16A TP outgoing circuits. Select the lowest cost circuit breakers which may be used. See diagram below. Incoming - Hager H250 MCCB having an Icu of 40kA. l Fuse Upstream - Circuit breaker downstream. The same procedure applies to fuse/circuit breaker as it does to fuse/fuse association to check current discrimination. While for all practical purposes, a desk top study of time/current and let-through energy (I2t) characteristics are perfectly adequate, the British Standards for circuit breakers do recommend testing to FRQĺUPWKHUHVXOWV:LWKWKLVLQPLQGKDJHUKDYHSUHSDUHGD complete list of discrimination levels for all its circuit protective devices. 4.49 Protection Devices Fuse I2t characteristics Co-ordination & Discrimination Co-ordination #DkMHSHNM This allows circuit breakers of lower breaking capacity than the PSCC to be installed. The principle is that two breakers operating in series will clear a larger fault and that energy let through by the upstream breaker will not damage the down stream device. l Co-ordination upstream MCB / downstream MCB, 1PP+N / 2PP, 230-240 V references WWW Breaking capacity EN 60898 / 61009-1 4,5kA Breaking capacity IEC 60947-1 6kA WWW MV, MW -!-WWW -"-WWW -#-WWW MB, MC ,!-WWW MU, MT ,"-WWW 6kA 3kA 6kA 6kA 10kA 10kA 10kA 20kA - 30kA calibre WWW 4,5kA WWW 6kA "WW #WW $WW %WW "WWW 6kA #WWW $WWW 10kA MV, MW 3kA 6kA curve B, C B, C B, C B, C B, C B, C, D B, C - 10kA - 20kA 20kA 20kA 10kA B, C - - - 20kA 20kA 20kA - B, C - - - - - 30kA - B, C - - - - - - 10kA B, C - - - 20kA 20kA 30kA MB, MC, MU, MT 6kA - B, C - - - - - 30kA MHN, MJN 4,5kA 6kA B, C 6kA 10kA - 20kA 20kA 20kA MLN 6kA 7,5kA B, C - 10kA - 20kA 20kA 20kA ,!-WWW ,"-WWW 6kA - B, C - - - - - 30kA -!-WWW -"-WWW -#-WWW 10kA 30kA B, C, D - - - - - - - 50kA B, C, D - - - - - - - 40kA B, C, D - - - - - - - 30kA B, C, D - - - - - - ,,-WW,,-WW - 50-40kA magn. - - - - - - HLE, HLF - 20kA B, C - - - - - - HMB, HMC, HMD - 30kA B, C, D - - - - - - HMJ, HMK - 60kA B, C - - - - - - HMX - 100kA C - - - - - - HLE, HLF HMB, HMC, HMD NQN, NRN, NSN references NQN, NRN, NSN Breaking capacity EN 60898 / 61009-1 - Breaking capacity IEC 60947-1 50kA HMJ, HMK HMX - - - - - - 40kA 30kA 20kA 30kA 60kA 100kA calibre 6-25A 25-40A 50-63A 80-125A 80-125A 80-125A 10-63A curve B, C, D B, C, D B, C, D B, C B, C, D B, C C WWW 4,5kA 6kA B, C 20kA 20kA 20kA 15kA 15kA 15kA 15kA WWW 6kA 10kA B, C 20kA 20kA 20kA 15kA 15kA 15kA 15kA - B, C 50kA 40kA 30kA - 30kA 60kA 100kA - B, C 50kA 40kA 30kA - - 60kA 100kA "WW #WW $WW %WW "WWW 6kA #WWW $WWW 10kA MV, MW 3kA 10kA B, C 50kA 40kA 30kA 20kA 30kA 30kA 50kA MB, MC, MU, MT 6kA - B, C 50kA 40kA 30kA - 30kA 60kA 100kA MHN, MJN 4,5kA 6kA B, C 20kA 20kA 20kA 15kA 15kA 15kA 15kA MLN 6kA 7,5kA B, C 20kA 20kA 20kA 15kA 15kA 15kA 15kA ,!-WWW ,"-WWW 6kA - B, C 50kA 40kA 30kA - 30kA 60kA 100kA -!-WWW -"-WWW -#-WWW 10kA 30kA B, C, D 50kA 40kA 30kA - - 60kA 100kA - 50kA B, C, D - - - - - 60kA 100kA - 40kA B, C, D - - - - - 60kA 100kA - 30kA B, C, D - - - - - 60kA 100kA ,,-WW,,-WW - 50-40kA magn. - - - - - 60kA 100kA HLE, HLF - 20kA B, C - - - - 30kA 60kA - HMB, HMC, HMD - 30kA B, C, D - - - - - 60kA - HMJ, HMK - 60kA B, C - - - - - - - HMX - 100kA C - - - - - - - NQN, NRN, NSN 4.50 Co-ordination & Discrimination Co-ordination upstream MCB / downstream MCB, 1PP, 230-240V, 2PP / 3PP / 3PP+N / 4PP, 400-415V references WWW Breaking capacity EN 60898 4,5kA Breaking capacity IEC 60947-2 6kA WWW MV, MW MB, MC ,!-WWW MU, MT ,"-WWW -!-WWW -"-WWW -#-WWW 6kA 3kA 6kA 6kA 10kA 10kA 4,5kA 10kA - 15kA calibre B, C B, C B, C B, C B, C B, C, D, SCP 3kA 4,5kA B, C - - - 10kA 10kA 15kA MX, MY 4,5kA 6kA B, C - - - 10kA 10kA 15kA MB, MC, MU, MT 6kA - B, C - - - - - 15kA ,!-WWW ,"-WWW ,3-,4- 6kA - B, C - - - - - 15kA MBA, MCA, NEN, NFN, NGN 6kA 10kA B, C, D - - - - - 15kA -!-WWW -"-WWW -#-WWW 10kA 15kA B, C, D - - - - - - - 25kA B, C, D - - - - - - - 20kA B, C, D - - - - - - - 15kA B, C, D - - - - - - ,,-WW,,-WW - 25-20kA magn. - - - - - - HLE, HLF 10kA 10kA B, C - - - - - - HMB, HMC, HMD 15kA 15kA B, C, D - - - - - - HMJ, HMK - 30kA B, C - - - - - - HMX - 50kA C - - - - - - HLE, HLF HMB, HMC, HMD NQN, NRN, NSN references NQN, NRN, NSN Breaking capacity EN 60898 - Breaking capacity IEC 60947-2 25kA HMJ, HMK Protection Devices curve MV, MW HMX - - 10kA 15kA - - 20kA 15kA 10kA 15kA 30kA 50kA calibre 6-25A 25-40A 50-63A 80-125A 80-125A 80-125A 10-63A curve B, C, D B, C, D B, C, D B, C B, C, D B, C C MV, MW 3kA 4,5kA B, C 25kA 20kA 15kA 10kA 15kA 15kA 25kA MX, MY 4,5kA 6kA B, C 25kA 20kA 15kA 10kA 15kA 20kA 35kA MB, MC, MU, MT 6kA - B, C 25kA 20kA 15kA - 15kA 30kA 50kA ,!-WWW ,"-WWW ,3-,4- 6kA - B, C 25kA 20kA 15kA - 15kA 30kA 50kA MBA, MCA, NEN, NFN, NGN 6kA 10kA B, C, D 25kA 20kA 15kA - 15kA 30kA 50kA -!-WWW -"-WWW -#-WWW 10kA 15kA B, C, D 25kA 20kA 15kA - - 30kA 50kA - 25kA B, C, D - - - - - 30kA 50kA - 20kA B, C, D - - - - - 30kA 50kA - 15kA B, C, D - - - - - 30kA 50kA ,,-WW,,-WW - 25-20kA magn. - - - - - 30kA 50kA HLE, HLF 10kA 10kA B, C - - - - 15kA 30kA - HMB, HMC, HMD 15kA 15kA B, C, D - - - - - 30kA - HMJ, HMK - 30kA B, C - - - - - - - HMX - 50kA C - - - - - - - NQN, NRN, NSN 4.51 Discrimination MCBs / MCBs Discrimination MCBs / MCBs Limits (kA) 240/415V AV IEC 947-2 Upstream : all MCB (1 and 1,5 modules / pole) and RCBO ranges B curve In 6A C curve 10A 13A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 1A B curve 6A - 10A - 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 - - 13A - - - - 16A - - - - - 20A - - - - - - 25A - - - - - - - 32A - - - - - - - - - 40A - - - - - - - - - - 50A - - - - - - - - - - - 63A - - - - - - - - - - - - 80A - - - - - - - - - - - 100A - - - - - - - - - - 125A - - - - - - - - - - 3A 4A 6A 10A 13A 16A 20A 25A 32A 40A 45A 50A 63A 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,5 - - - - - 0,5 - - - - - - - 0,5 - - - - - - - - 0,5 - - - - - - - - - 0,5 - - - - - - - - - - 0,5 - - - - - - - - - - - 0,5 - - - - - - - - - - - - - 0,5 - - - - - - - - - - - - - - 0,47 0,5 - - - - - - - - - - - - - - - 0,4 0,5 - - - - - - - - - - - - - - - - - 0,5 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,23 0,4 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,16 0,18 0,2 0,25 0,32 0,4 0,,2 0,25 0,32 0,4 0,25 0,32 0,4 0,32 0,4 0,5A 0,024 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 C curve Downstream: all MCB (1 and 1,5 module / pole) and RCBO ranges D curve MMNxxx range 4.52 2A 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,19 0,24 0,3 0,34 0,38 0,47 0,24 0,3 0,34 0,38 0,47 0,3 0,34 0,38 0,47 0,38 0,47 0,5 0,008 0,015 0,023 0,03 0,05 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 1A 0,024 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,5 - 2A 0,024 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,5 - - - 3A - 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,5 - - - - 4A - 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,5 - - - - - 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 6A - 0,5 - - - - - 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 - - 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 10A - - - - - 13A - - - - - 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 - 16A - - - - - - - 20A - - - - - - - - - 25A - - - - - - - - - - 32A - - - - - - - - - - - 40A - - - - - - - - - - - - 50A - - - - - - - - - - - 63A - - - - - - - - - - 80A - - - - - - - - - 100A - - - - - - - - 125A - - - - - - - - 0,015 0,023 0,03 0,05 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,03 0,05 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,05 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,5 - - - - - - - 0,5 - - - - - - - - - 0,19 0,24 0,3 0,34 0,38 0,47 0,5 - - - - - - - - - 0,19 0,24 0,3 0,34 0,38 0,47 0,5 - - - - - - - - - - 0,5 - - - - - - - - - - - 0,5 - - - - - - - - - - - - - 0,4 0,5 - - - - - - - - - - - - - - 0,47 - - 0,5 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0,5A 0,024 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,5 - 1A 0,024 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,5 - - 2A - 0,5 - - - - 3A - - - 0,5 - - - - - 4A - - - - 0,5 - - - - - - 6A - - - - - - 0,5 - - - - - - - - 10A - - - - - - - 0,5 - - - - - - - - - - 13A - - - - - - - - - 0,5 - - - - - - - - - - - 16A - - - - - - - - - - - 0,5 - - - - - - - - - - - - - 20A - - - - - - - - - - - - 0,4 0,5 - - - - - - - - - - - - - - 0,47 25A - - - - - - - - - - - - - 0,5 - - - - - - - - - - - - - - - 32A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 40A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 50A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 63A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 80A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 100A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 125A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0,63A 0,024 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,5 - - - 1,25A - 0,5 - - - - - 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 1,6A - - 0,5 - - - - - 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 2,5A - - - 0,5 - - - - - - - 4A - - - - - 0,5 - - - - - - - - - 6,3A - - - - - - - 0,5 - - - - - - - - - - - 10A - - - - - - - - - - 0,5 - - - - - - - - - - - - - - 0,47 12,5A - - - - - - - - - - - 0,5 - - - - - - - - - - - - - - - 16A - - - - - - - - - - - - 0,4 0,5 - - - - - - - - - - - - - - - 20A - - - - - - - - - - - - - 0,5 - - - - - - - - - - - - - - - 25A - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,16 0,18 0,2 0,25 0,32 0,4 0,2 0,25 0,32 0,4 0,25 0,32 0,4 0,32 0,4 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,16 0,18 0,2 0,25 0,32 0,4 0,2 0,25 0,32 0,4 0,32 0,4 0,04 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,05 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,06 0,08 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,1 0,13 0,16 0,18 0,2 0,25 0,32 0,4 0,16 0,18 0,2 0,25 0,32 0,4 0,25 0,32 0,4 0,32 0,4 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,24 0,3 0,34 0,38 0,47 0,3 0,34 0,38 0,47 0,38 0,47 0,015 0,023 0,03 0,05 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,023 0,03 0,05 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,05 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,24 0,3 0,34 0,38 0,47 0,3 0,34 0,38 0,47 0,38 0,47 0,03 0,05 0,08 0,1 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,12 0,15 0,19 0,24 0,3 0,34 0,38 0,47 0,19 0,24 0,3 0,34 0,38 0,47 0,3 0,34 0,38 0,47 D curve 2A 3A 4A 6A MMNxxx range 10A 13A 16A 20A 25A 32A 40A 45A 50A 63A 80A 100A 125A 0,63A 1,25A 1,6A 2,5A 4A 6,3A 10A 12,5A 16A 20A 25A 1,5 1,9 - - - - - 0,08 0,13 0,16 0,2 0,25 0,31 1,5 1,9 - - - - - - 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - - - - - - - - 0,2 0,25 0,31 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - - - - - - - - 0,2 0,25 0,31 1,5 1,9 - - - - - - - - - 1,5 1,9 - - - - - - - - - - 0,31 1,5 1,9 - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - 1,2 1,5 1,9 - - - - - - - - - - - 0,6 0,75 0,94 - - - - - 0,6 0,75 0,94 - - - - - - - 0,6 0,75 0,94 - - - - - - - - 0,6 0,75 0,94 - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - - - - - - 0,75 0,94 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,48 0,6 0,68 0,75 0,95 1,2 0,6 0,68 0,75 0,95 1,2 0,75 0,95 1,2 0,13 0,16 0,2 0,25 0,31 0,25 0,31 - - - - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - - - 0,94 - - - - - - - - - - - - - - - - - 1,9 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0,6 0,75 0,94 0,015 0,03 0,045 0,06 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 0,008 0,016 0,02 0,03 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,6 0,75 0,94 - 1,5 1,9 - 0,6 0,75 0,94 - - - 1,5 1,9 - - - 0,6 0,75 0,94 - - - - 1,5 1,9 - - - - 0,6 0,75 0,94 - - - - - 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - - - - - 0,08 0,13 0,16 0,2 0,25 0,31 0,6 0,75 0,94 - - - - - 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - - - - - 0,08 0,13 0,16 0,2 0,25 0,31 0,6 0,75 0,94 - - - - - - - 1,5 1,9 - - - - - - 0,6 0,75 0,94 - - - - - - - - - 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - - - - - - - - 0,2 0,25 0,31 0,6 0,75 0,94 - - - - - - - - - 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - - - - - - - - 0,2 0,25 0,31 0,6 0,75 0,94 - - - - - - - - - - 1,5 1,9 - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - 0,31 0,6 0,75 0,94 - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - - - - - 1,2 1,5 1,9 - - - - - - - - - - - 0,03 0,045 0,06 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,06 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,48 0,6 0,68 0,75 0,95 1,2 0,6 0,68 0,75 0,95 1,2 0,75 0,95 1,2 0,95 1,2 0,016 0,02 0,03 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,03 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,13 0,16 0,2 0,25 0,31 0,25 0,31 - - - - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - - - 0,94 - - - - - - - - - - - - - - - - - 1,9 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0,6 0,75 0,94 0,015 0,03 0,045 0,06 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - 0,6 0,75 0,94 - 1,5 1,9 - - 0,6 0,75 0,94 - - - 1,5 1,9 - - - - 0,6 0,75 0,94 - - - - 1,5 1,9 - - - - - 0,08 0,13 0,16 0,2 0,25 0,31 0,6 0,75 0,94 - - - - - 1,5 1,9 - - - - - 0,08 0,13 0,16 0,2 0,25 0,31 0,6 0,75 0,94 - - - - - - 1,5 1,9 - - - - - - 0,6 0,75 0,94 - - - - - - - - 1,5 1,9 - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - 1,5 1,9 - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - 1,5 1,9 - - - - - - - - - - 0,31 0,6 0,75 0,94 - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - - - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - - - 0,75 0,94 0,75 0,94 0,03 0,045 0,06 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,06 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,48 0,6 0,68 0,75 0,95 1,2 0,6 0,68 0,75 0,95 1,2 0,75 0,95 1,2 0,95 1,2 0,016 0,02 0,03 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,02 0,03 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,13 0,16 0,2 0,25 0,31 0,2 0,25 0,31 0,25 0,31 - - 0,94 - - - - - - - - - - - - - - - 1,2 1,5 1,9 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1,9 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 0,6 0,75 0,94 - - - 1,5 1,9 - - 0,6 0,75 0,94 - - - - - 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - - - - 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,6 0,75 0,94 - - - - - 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 1,5 1,9 - - - - 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,6 0,75 0,94 - - - - - - - 1,5 1,9 - - - - - 0,6 0,75 0,94 - - - - - - - - - 1,5 1,9 - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - 1,5 1,9 - - - - - - - - 0,6 0,75 0,94 - - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - 0,31 0,6 0,75 0,94 - - - - - - - - - - - - - - - 1,2 1,5 1,9 - - - - - - - - - - - - - - - - - - - - - - - - - - - 1,5 1,9 - - - - - - - - - - - - 0,75 0,94 0,06 0,09 0,15 0,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,24 0,3 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,38 0,48 0,6 0,68 0,75 0,95 1,2 0,6 0,68 0,75 0,95 1,2 0,95 1,2 0,02 0,03 0,05 0,08 0,13 0,16 0,2 0,25 0,31 0,08 0,13 0,16 0,2 0,25 0,31 0,13 0,16 0,2 0,25 0,31 0,2 0,25 0,31 - - 0,94 - - - - - - - - - - - - - - - - - 1,9 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4.53 Protection Devices 80A 100A 125A 1A Co-ordination Fuses / MCBs Cascading fuses / MCBs 1PP+N / 2PP 230V - 240 V IEC 947-2 SOCOMEC fuses 22 x 58 and size 00 (160A) NH00 500 V gL/gl (SIEMENS) fuses Range Breaking capacity IEC 60898 / 61009-1 Breaking capacity IEC 60947-2 œ 50A 63A 80A 100A - - - - 100 kA Curve gG WWW 4,5 kA 6 kA B, C 100 kA 65 kA 40 kA 22 kA WWW 6 kA 10 kA B, C 100 kA 100 kA 65 kA 40 kA "WW #WW $WW %WW "WWW #WWW $WWW 6 kA - B, C 100 kA 100 kA 100 kA 100 kA 10 kA - B, C 100 kA 100 kA 100 kA 100 kA MV, MW 3 kA 10 kA B, C 100 kA 100 kA 100 kA 75 kA MB, MC, MU, MT 6 kA - B, C 100 kA 100 kA 100 kA 100 kA MHN, MJN 4,5 kA 6 kA B, C 100 kA 65 kA 40 kA 22 kA MLN 6 kA 7,5 kA B, C 100 kA 100 kA 65 kA 40 kA MBN, MCN 6 kA - B, C 100 kA 100 kA 100 kA 100 kA NBN, NCN, NDN 10 kA 30 kA B, C, D 100 kA 100 kA 100 kA 100 kA NQN, NRN, NSN - 50-30 kA B, C, D 100 kA 100 kA 100 kA 100 kA ,,-WW,,-WW - 50-40 kA magn. 100 kA 100 kA 100 kA 100 kA HLE, HLF - 20 kA B, C 100 kA 100 kA 100 kA 70 kA HMB, HMC, HMD - 30 kA B, C, D 100 kA 100 kA 100 kA 70 kA HMJ, HMK - 60 kA B, C 100 kA 100 kA 100 kA 100 kA HMX - 100 kA C 100 kA 100 kA 100 kA 100 kA Cascading fuses / MCBs 1PP 230V - 240 V 2PP / 3PP / 3PP+N / 4PP 400 - 415 V IEC 947-2 SOCOMEC fuses 22 x 58 and size 00 (160A) NH00 500 V gL/gl (SIEMENS) fuses Range Breaking capacity IEC 60898 / 61009-1 Breaking capacity IEC 60947-2 œ 50A 63A 80A 100A - - - - 100 kA Curve gG MV, MW 3 kA 4,5 kA B, C 100 kA 100 kA 100 kA 75 kA MX, MY 4,5 kA 6 kA B, C 100 kA 100 kA 100 kA 90 kA MB, MC, MU, MT 6 kA - B, C 100 kA 100 kA 100 kA 100 kA NB, NC, ND 10 kA 15 kA B, C, D 100 kA 100 kA 100 kA 100 kA MBN, MCN 6 kA - B, C 100 kA 100 kA 100 kA 100 kA NBN, NCN, NDN 10 kA 15 kA B, C, D 100 kA 100 kA 100 kA 100 kA NQN, NRN, NSN - 25-15 kA B, C, D 100 kA 100 kA 100 kA 100 kA ,,-WW,,-WW - 25-20 kA magn. 100 kA 100 kA 100 kA 100 kA HLE, HLF 10 kA 10 kA B, C 100 kA 100 kA 65 kA 35 kA HMB, HMC, HMD 15 kA 15 kA B, C, D 100 kA 100 kA 65 kA 35 kA HMJ, HMK - 30 kA B, C 100 kA 100 kA 100 kA 100 kA HMX - 50 kA C 100 kA 100 kA 100 kA 100 kA 4.54 160A 200A 250A 315A 400A 500A 630A 800A - - - - - - - - - 15 kA 6,5 kA 6 kA 6 kA 6 kA 6 kA 6 kA 6 kA 6 kA 25 kA 11 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 70 kA 35 kA 20 kA 20 kA 20 kA 20 kA 20 kA 20 kA 20 kA 100 kA 100 kA 70 kA 30 kA 30 kA 30 kA 30 kA 30 kA 30 kA 50 kA 25 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 70 kA 35 kA 20 kA 20 kA 20 kA 20 kA 20 kA 20 kA 20 kA 15 kA 6,5 kA 6 kA 6 kA 6 kA 6 kA 6 kA 6 kA 6 kA 25 kA 11 kA 7,5 kA 7,5 kA 7,5 kA 7,5 kA 7,5 kA 7,5 kA 7,5 kA 70 kA 35 kA 9 kA 9 kA 9 kA 9 kA 9 kA 9 kA 9 kA 100 kA 100 kA 70 kA 30 kA 30 kA 30 kA 30 kA 30 kA 30 kA 100 kA 100 kA 70 kA 30 kA 30 kA 30 kA 30 kA 30 kA 30 kA 100 kA 100 kA 70 kA 30 kA 30 kA 30 kA 30 kA 30 kA 30 kA 45 kA 20 kA 20 kA 20 kA 20 kA 20 kA 20 kA 20 kA 20 kA 50 kA 30 kA 30 kA 30 kA 30 kA 30 kA 30 kA 30 kA 30 kA 100 kA 100 kA 100 kA 60 kA 60 kA 60 kA 60 kA 60 kA 60 kA 100 kA 100 kA 100 kA 100 kA 100 kA 100 kA 100 kA 100 kA 100 kA 125A 160A 200A 250A 315A 400A 500A 630A 800A - - - - - - - - - 50 kA 25 kA 4,5 kA 4,5 kA 4,5 kA 4,5 kA 4,5 kA 4,5 kA 4,5 kA 60 kA 30 kA 6 kA 6 kA 6 kA 6 kA 6 kA 6 kA 6 kA 70 kA 35 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 100 kA 100 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 70 kA 35 kA 6 kA 6 kA 6 kA 6 kA 6 kA 6 kA 6 kA 100 kA 100 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 100 kA 100 kA 60 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 100 kA 100 kA 60 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 22 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 10 kA 25 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 15 kA 100 kA 70 kA 50 kA 30 kA 30 kA 30 kA 30 kA 30 kA 30 kA 100 kA 100 kA 70 kA 50 kA 50 kA 50 kA 50 kA 50 kA 50 kA Protection Devices 125A 4.55 Discrimination Chart Fuses / MCBs Discrimination chart 240/415V AC according to IEC 60 947-2 Limits (kA) Upstream: fuses category Gg (SOCOMEC) B curve C curve Downstream: MCB 1 module / pole, ocean2 and v1 ranges D curve B curve C curve Downstream: MCB 1 module / pole, GDE range In 2A 4A 6A 8A 10A 12A 16A 20A 25A 32A 40A 50A 63A 80A 100A 125A 160A 200A 6A 10A 13A 16A 20A 25A 32A 40A 50A 63A 0,5A 1A 2A 3A 4A 6A 10A 13A 16A 20A 25A 32A 40A 50A 63A 0,5A 1A 2A 3A 4A 6A 10A 13A 16A 20A 25A 32A 40A 50A 63A 6A 10A 13A 16A 20A 25A 32A 40A 50A 63A 0,5A 1A 2A 3A 4A 6A 10A 13A 16A 20A 25A 32A 40A 50A 63A 0,07 0,055 0,07 0,07 0,055 - 0,12 0,09 0,09 0,12 0,09 0,11 0,09 0,08 - 0,16 0,12 0,12 0,105 0,16 0,12 0,15 0,12 0,12 0,11 - 0,14 0,22 0,15 0,15 0,13 0,13 0,22 0,15 0,15 0,11 0,19 0,16 0,15 0,13 0,12 - 0,17 0,24 0,19 0,19 0,16 0,16 0,24 0,19 0,19 0,16 0,13 0,23 0,19 0,19 0,16 0,15 - 0,21 0,19 0,34 0,23 0,23 0,2 0,2 0,18 0,34 0,23 0,23 0,2 0,2 0,16 0,14 0,28 0,23 0,23 0,19 0,19 0,16 - 0,31 0,28 0,25 0,61 0,38 0,38 0,32 0,32 0,29 0,26 0,61 0,38 0,38 0,31 0,31 0,26 0,22 0,19 0,44 0,35 0,35 0,29 0,29 0,25 0,22 - 0,42 0,38 0,34 0,34 1 0,57 0,57 0,46 0,46 0,42 0,37 0,33 1 0,54 0,54 0,44 0,44 0,37 0,35 0,31 0,27 0,26 0,63 0,48 0,48 0,4 0,4 0,35 0,3 0,26 - 0,62 0,55 0,47 0,47 0,41 1,6 0,9 0,9 0,7 0,7 0,62 0,55 0,46 0,46 1,6 0,85 0,85 0,67 0,67 0,54 0,46 0,5 0,43 0,37 0,36 0,31 0,96 0,73 0,73 0,59 0,59 0,5 0,43 0,37 0,36 - 1 0,9 0,75 0,75 0,65 0,65 3,2 1,5 1,5 1,1 1,1 1 0,9 0,75 0,75 0,65 3,2 1,4 1,4 1,1 1,1 0,87 0,74 0,65 0,8 0,68 0,57 0,57 0,46 0,46 1,5 1,1 1,1 0,94 0,94 0,8 0,68 0,57 0,57 0,46 - 1,5 1,3 1,1 1,1 0,97 0,97 0,84 6,3 2,7 2,7 1,9 1,9 1,5 1,3 1,1 1,1 0,97 0,97 5,7 2,3 2,3 1,6 1,6 1,3 1,1 0,99 0,99 1,2 1 0,85 0,85 0,7 0,7 0,61 2,7 1,8 1,8 1,4 1,4 1,2 1 0,85 0,85 0,7 0,7 - 2,3 2 1,7 1,7 1,3 1,3 1,2 1,2 T 4,8 4,8 3,2 3,2 2,3 2 1,7 1,7 1,3 1,3 1,2 T 4 4 2,8 2,8 2,1 1,6 1,5 1,5 1,1 1,8 1,5 1,2 1,2 1,05 1,05 0,97 0,97 5 3,2 3,2 2,3 2,3 1,8 1,5 1,2 1,2 1,05 1,05 0,97 - 3,8 3,3 2,8 2,8 2,3 2,3 1,9 1,9 1,8 T 9,3 9,3 5,9 5,9 3,8 3,3 2,8 2,8 2,3 2,3 1,9 1,9 T 6,9 6,9 5 5 3,6 2,8 2,4 2,4 1,7 1,7 2,9 2,4 2 2 1,7 1,7 1,5 1,5 1,4 T 5,9 5,9 4 4 2,9 2,4 2 2 1,7 1,7 1,5 1,5 - 7,1 6 5 5 4 4 3,1 3,1 2,8 2,8 T T T T T 7,1 6 5 5 4 4 3,1 3,1 2,8 T T T 9,2 9,2 6,4 5 4 4 2,8 2,8 2,2 5,2 4,1 3,4 3,4 2,8 2,8 2,6 2,6 2,4 2,4 T T T T T 5,2 4,1 3,4 3,4 2,8 2,8 2,6 2,6 2,4 - T T 8,9 8,9 6,8 6,8 5,4 5,4 4,5 4,5 T T T T T T T 8,9 8,9 6,8 6,8 5,4 5,4 4,5 4,5 T T T T T T 8,6 6,8 6,8 4,7 4,7 3,5 3,5 T T 5,7 5,7 4,7 4,7 4,3 4,3 3,9 3,9 T T T T T T T 5,7 5,7 4,7 4,7 4,3 4,3 3,9 3,9 T T T T T T 9 9 6,8 6,8 T T T T T T T T T T T 9 9 6,8 6,8 T T T T T T T T T 7,4 7,4 5,5 5,5 4,5 T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T 9,1 9,1 7,2 7,2 T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T = total discrimination Each underlined value must be read as T when it is over the breaking capacity range of MCBs. 4.56 Discrimination Chart Fuses / MCBs Discrimination chart 240/415V AC according to IEC 60 947-2 Upstream: fuses category Gg (SOCOMEC) B curve C curve Downstream: MCB 1 module / pole, GTE range D curve Downstream: MMNxxx range In 6A 10A 13A 16A 20A 25A 32A 40A 50A 63A 0,5A 1A 2A 3A 4A 6A 10A 13A 16A 20A 25A 32A 40A 50A 63A 0,5A 1A 2A 3A 4A 6A 10A 13A 16A 20A 25A 32A 40A 50A 63A 0,63A 1,25A 1,6A 2,5A 4A 6,3A 10A 12,5A 16A 20A 25A 2A 0,07 0,055 0,07 - 4A 0,12 0,09 0,09 0,12 0,09 - In 80A 100A 125A 80A 100A 125A 80A 100A 125A 80A - Limits (kA) 6A 0,16 0,12 0,12 0,105 0,16 0,12 0,105 - 8A 0,14 0,22 0,15 0,15 0,13 0,13 0,22 0,15 0,15 0,14 - 10A 0,17 0,24 0,19 0,19 0,16 0,16 0,24 0,19 0,19 0,16 0,17 0,17 - 12A 0,21 0,19 0,34 0,23 0,23 0,2 0,2 0,18 0,34 0,23 0,23 0,2 0,2 0,21 0,21 0,17 - 16A 0,31 0,28 0,25 0,61 0,38 0,38 0,32 0,32 0,29 0,26 0,61 0,38 0,38 0,31 0,31 0,33 0,33 0,27 - 25A 0,62 0,55 0,47 0,47 0,41 1,6 0,9 0,9 0,7 0,7 0,62 0,55 0,46 0,46 1,6 0,85 0,85 0,67 0,67 0,54 0,46 0,66 0,66 0,54 0,54 0,43 - 32A 1 0,9 0,75 0,75 0,65 0,65 3,2 1,5 1,5 1,1 1,1 1 0,9 0,75 0,75 0,65 3,2 1,4 1,4 1,1 1,1 0,87 0,74 0,65 1,02 1,02 0,84 0,84 0,67 - 40A 1,5 1,3 1,1 1,1 0,97 0,97 0,84 6,3 2,7 2,7 1,9 1,9 1,5 1,3 1,1 1,1 0,97 0,97 5,7 2,3 2,3 1,6 1,6 1,3 1,1 0,99 0,99 1,5 1,5 1,2 1,2 1 1 - 50A 2,3 2 1,7 1,7 1,3 1,3 1,2 1,2 13 4,8 4,8 3,2 3,2 2,3 2 1,7 1,7 1,3 1,3 1,2 11 4 4 2,8 2,8 2,1 1,6 1,5 1,5 1,1 2,3 2,3 1,9 1,9 1,4 1,4 - 315A T T T T T T T T T 400A T T T T T T T T T 500A T T T T T T T T T 630A T T T T T T T T T 800A T T T T T T T T T 63A 3,8 3,3 2,8 2,8 2,3 2,3 1,9 1,9 1,8 T 9,3 9,3 5,9 5,9 3,8 3,3 2,8 2,8 2,3 2,3 1,9 1,9 24 6,9 6,9 5 5 3,6 2,8 2,4 2,4 1,7 1,7 3,8 3,8 3 3 2,2 2,2 1,7 - 80A 7,1 6 5 5 4 4 3,1 3,1 2,8 2,8 T 21 21 12 12 7,1 6 5 5 4 4 3,1 3,1 2,8 T 13 13 9,2 9,2 6,4 5 4 4 2,8 2,8 2,2 7 7 5,4 5,4 3,5 3,5 2,8 2,8 - 100A 14 11 8,9 8,9 6,8 6,8 5,4 5,4 4,5 4,5 T T T T T 14 11 8,9 8,9 6,8 6,8 5,4 5,4 4,5 4,5 T T T 19 19 11 8,6 6,8 6,8 4,7 4,7 3,5 3,5 14 14 10 10 5,8 5,8 4,6 4,6 3,6 - 125A T 21 16 16 12 12 9 9 6,8 6,8 T T T T T T 21 16 16 12 12 9 9 6,8 6,8 T T T T T 23 15 11 11 7,4 7,4 5,5 5,5 4,5 T T 18 18 9 9 7,2 7,2 5,6 5,6 - 160A T T T T 21 21 15 15 10 10 T T T T T T T T T 21 21 15 15 10 10 T T T T T T T 24 24 14 14 9,1 9,1 7,2 7,2 T T T T 15 15 11 11 9,2 9,2 9,2 200A T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T 13 13 T T T T T T T T T T T 250A T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T Upstream: fuses category Gg (SOCOMEC) B curve C curve D curve Downstream: MCB 1,5 module / pole, DEFI125 range 20A 0,42 0,38 0,34 0,34 1 0,57 0,57 0,46 0,46 0,42 0,37 0,33 1 0,54 0,54 0,44 0,44 0,37 0,46 0,46 0,38 0,38 - 100A 2,2 - 125A 3,9 3,9 2,8 - 160A 6,2 6,2 6,2 5,3 5,3 - 200A 8,8 8,8 8,8 7,8 7,8 7,8 6,6 - 250A 13 13 13 13 13 13 15 12 - T = total discrimination Each underlined value must be read as T when it is over the breaking capacity range of MCBs. 4.57 Protection Devices Limits (kA)
