Control Circuit Fusing Instructions IMPORTANT: Select the fuse to protect the control circuit conductors in accordance with the National Electrical Code and Canadian Electrical Code. Primary Fuse Sizing Chart - Refer to NEC and CEC Requirements (When only Primary Protection is used.) Maximum Ampere Rating for Current Limiting Class CC Fuses based on Transformer Primary Voltage Transformer VA Rating 208 V 220V 240 V 277 V 347 V 380 V 400 V 415 V 440 V 480 V 500 V 550 V 600 V 690 V 63 VA .75 .75 .75 .5 .5 .4 .4 .4 .4 .25 .25 .25 .25 .25 80 VA 1 1 1 .75 .5 .5 .5 .5 .5 .5 .4 .4 .4 .25 130 VA 1.5 1.5 1.5 1.25 1 1 .75 .75 .75 .75 .75 .5 .5 .5 200 VA 2.5 2.5 2.5 2 1.5 1.5 1.5 1.25 1.25 1.25 1 1 1 .75 250 VA 3 3 3 2.5 2 1.5 1.5 1.5 1.5 1.5 1.5 1.25 1.25 1 350 VA 5 4 4 3 3 2.5 2.5 2.5 2 2 2 1.5 1.5 1.5 500 VA 4 3 3 5 4 3 3 3 3 3 3 2.5 2.5 2 750 VA 6 5 5 4 3 5 5 5 5 4 4 4 3 3 800 VA 6 6 5 4 3 3 3 5 5 5 4 4 4 3 1000 VA 8 7 6 6 4 4 4 4 3 3 3 5 5 4 1600 VA 12 12 11 9 7 7 6 6 6 5 5 4 4 3 2000 VA 12 11 13 12 9 8 8 8 7 6 6 6 5 4 Primary Fuse Sizing Chart - Refer to NEC Requirements Only (When Primary and Secondary Protection is used.) Maximum Ampere Rating for Current Limiting Class CC Fuses based on Transformer Primary Voltage Transformer VA Rating 208 V 220V 240 V 277 V 347 V 380 V 400 V 415 V 440 V 480 V 500 V 550 V 600 V 690 V 63 VA .75 .75 .5 .5 .4 .4 .4 .4 .3 .3 .3 .25 .25 .25 80 VA 1.5 1.5 1.5 1 1 1 1 .75 .75 .75 .75 .5 .5 .5 130 VA 3 2.5 2.5 2 1.5 1.5 1.5 1.5 1.25 1.25 1.25 1 1 .75 200 VA 4 4 4 3 2.5 2.5 2.5 2 2 2 2 1.5 1.5 1 250 VA 6 5 5 4 3 3 3 3 2.5 2.5 2.5 2 2 1.5 350 VA 8 7 7 6 5 4 4 4 3 3 3 3 2.5 2.5 500 VA 6 5 5 9 7 6 6 6 5 5 5 4 4 3 750 VA 9 8 7 6 5 9 9 9 8 7 7 6 6 5 800 VA 9 9 8 7 5 5 5 8 8 8 8 7 6 5 1000 VA 12 10 10 9 7 6 6 6 5 5 5 8 8 7 1600 VA 15 15 15 12 11 10 10 9 9 8 8 7 6 5 2000 VA 20 20 20 18 14 12 12 12 10 10 10 9 8 7 Secondary Fuse Sizing Chart - Refer to NEC and CEC Requirements Maximum Ampere Rating for Current Limiting Midget Fuses Transformer VA Rating 63 VA 80 VA 130 VA 200 VA 250 VA 350 VA 500 VA 750 VA 800 VA 1000 VA 1600 VA 2000 VA 24 V 4 5 9 13 15 20 30 45 45 60 100 ----- 110 V .75 1 1.8 2.5 3.2 4.5 6.25 9 9 12 20 25 115 V .75 1 1.8 2.5 3.2 4.5 6.25 9 9 12 20 25 120 V .75 1 1.8 2.5 3.2 4.5 6.25 9 9 12 20 25 230 V .4 .5 .9 1.25 1.5 2.25 3 4.5 4.5 6 10 12 ATTENTION: To prevent electrical shock, disconnect from power source before installing or servicing. ATTENTION: Pour éviter tout risque de choc électrique, couper le courant avant l'installation ou le réglage. TYPICAL FUSE BLOCK CONNECTIONS FOR TRANSFORMER WITH DUAL VOLTAGE PRIMARY H1 H2 "J" H3 H4 1-PHASE or 3-PHASE LINES L3 L1 L2 PRI. H1 L1 L2 Single Voltage Primary: Transformer primary is marked H1 and H2. Wire shown connected at H1 on dual voltage is connected at H1 on single voltage primary. Wire shown connected at H4 on dual voltage primary is connected at H2 on single voltage primary. H2 1 X1 SEC. GND. X2 X1 T1 W H E NU S E DW I T HA STARTER, CONNECT TO N.C. CONTACT OF O.L. OR TO COIL TERMINAL. (SEE SPECIFIC WIRING DIAGRAM INSTRUCTIONS) H1 TYPICAL FUSE BLOCK CONNECTIONS FOR TRANSFORMER WITH SINGLE VOLTAGE PRIMARY H2 T3 T2 NOTE:IFSECONDARY FUSINGISNOTUSED, CONNECT WIRES TO X1 AND X2 AND REMOVE WIRE FROM SECONDARY FUSE 1-PHASE or 3-PHASE LINES L3 L1 L2 GND. Ground: If specified, ground transformer at X2. TIGHTENING TORQUES Fuse Block Terminals: 16-24 lb-in. Transformer Terminals: (1) #18-12 AWG CU Torque 12 lb-in / 1.4 N•m or (2) Same #18-12 AWG CU Torque 12 lb-in / 1.4 N•m PRI. H1 L1 Maintain this equipment in accordance with guidelines of NFPA-70B, Electrical Equipment Maintenance. L2 H2 1 Dual Voltage Primary: Transformer shown has a dual voltage primary and is connected for high voltage. For lower voltage, remove jumper "J" and connect H1 to H3 and H2 to H4. X1 SEC. X2 X1 T1 W H E NU S E DW I T HA STARTER, CONNECT TO N.C. CONTACT OF O.L. OR TO COIL TERMINAL. (SEE SPECIFIC WIRING DIAGRAM INSTRUCTIONS) T2 T3 NOTE: IF SECONDARY FUSINGISNOTUSED, CONNECT WIRES TO X1 AND X2 AND REMOVE WIRE FROM SECONDARY FUSE TO X1. Fuse Block Accessory Kits for use when fuse block is not integral with the transformer. ATTENTION: These control circuit fusing kits are intended to be used for control circuit transformer protection and protection of control circuits capable of delivering no more than 200,000 RMS symmetrical amperes, 600 volts maximum. ATTENTION: Ces ensembles fusibles pour circuits de commande sont conçus pour la protection des transformateurs de circuits de commande et des circuits de commande eux-mêmes a condition que ceux-ci ne puissent fournir qu'un courant symétrique efficace maximal de 200,000 ampères, 600 volts. One Pole Kit - Panel Mounted (Midget Fuse) ............................................................................... Cat. No. 1491-R165 Two Pole Kit - Panel Mounted (Midget Fuses) ......................................................................... Cat. No. 1491-R167 Three Pole Kit - Panel Mounted (Two Class CC Fuses / One Midget Fuse)............................... Cat. No. 1491-R169 Three Pole Kit - Panel Mounted (Three Class CC Fuses) ........................................................... Cat. No. 1491-R171 These kits use only Class CC or Midget fuses (rated 0.5 to 30 amperes) such as those offered by the following manufacturers: Bussmann KTK-R Ferraz-Shawmut ATM R Littelfuse KLK IMPORTANT: For control circuit transformers with a 350 VA or larger rating, it is recommended that Bussmann Type FNQ-R, Ferraz-Shawmut Type ATDR, Littlefuse Type KLDR time delay fuses or equivalent be used for primary fusing. Single Pole Kit - Bulletin 500 Line Controller Mounted (Class CC Fuses) ................................. Cat. No. 599-FR04* *Cat. No. 599-FR04 is rated for 6 ampere fuse maximum. Controller mounting applies to size 0-5 devices only. One Pole Kit - Panel Mounted (31-60 Ampere Class J Fuse) ...................................................... Cat. No. 1491-R173 One Pole Kit - Panel Mounted (61-100 Ampere Class J Fuse) .................................................... Cat. No. 1491-R175 42052-008-01 (03) Printed in U.S.A. www.rockwellautomation.com