Earth leakage and overloads
short-circuit protection with
self-reclosing
P 2
P.2.01 GB
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
CONTENTS
Associated
breaking element
Earth leakage protection systems with self-reclosing
3-4
Parameters related to self-reclosing relays
5
Protection and earth leakage self-reclosing
6
REC, built-in system
Built-in
7
WRU-25 RA / WRU-35 RA, Relays with built-in transformer
9
RGU-10 RAL / RGU-10C RAL, Relays with external transformer
10
WG-35 / WG-70 / WG-105 / WG-140 / WG-210
WRU-25 2R / WRU-RM / WRU-RT, other relays with different functions
Contactor
10
11
GU72-D RA / CBS-8
12
CBS-8
13
Overload and earth leakage protection / earth leakage reclosing
WRKRT-25 T / WRKRT-25 N
14
MCB
Overload and earth leakage protection and reclosing
RGU-10 MT, Relays with external transformer
15
16
WRU 25 RA-MT, Relays with built-in transformer
17
MT
18
WRT-6-25, other relays with different functions
19
RGMT, other relays with different functions
20
Overload reclosing
21
RRM-P, RRM-C
MT
Breaking elements
21
22
MCB-P / MCB-T circuit breaker
22
MT motorized overload device
23
MT-FDE, MT-FEE motorized overload device
24
Accessories
25
Dimensions / Connection
25-28
Earth leakage protection and
reclosing
Earth leakage and overload
protection / earth leakage reclosing
Earth leakage, overload protection
and reclosing
Overload reclosing
P2-2
Page
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Earth leakage protection systems with self-reclosing
Starting from the necessity and obligation of ensuring effective protection to both
people and goods and the complexity of installations, requiring continuous supply
of electrical energy without removing earth leakage and overload protection,
CIRCUTOR has developed a range of equipments which allow safety to be matched
with continuous service.
Self-reclosing is the ideal solution for installations requiring continuous supply of
electrical energy without the usual maintenance staff:
•
•
•
•
•
•
•
•
•
Rural installations
Cooling chambers
Public lighting
Mobile telephone repeaters
Traffic lights
Tunnel lighting
ATM’s
Cable television
etc.
In every self-reclosing system, the type of protection to be reconnected and under
which conditions, must be known.
Self-reclosing systems operate under:
• Earth leakage current (differential)
• Earth leakage current (differential) + overload and short-circuit (overload)
Elements comprising a self-reclosing system
TRANSFORMER
RELAY
Signal management +
measuring and trip
BREAKING DEVICE
Monitored
Earth leakage transformer
The earth leakage transformer detects the earth leakage current. This can be placed inside or outside the relay.
Self-reclosing relay
Self-reclosing relays offer additional benefits (automatic self-reclosing, overload or short-circuit protection), to the reliability
and safety shown by U Series earth leakage protection.
Its functions are:
• Fault detection (earth leakage or overload) via a signal generated by the transducer
• Analyses if this fault should generated an alarm, with regard to the different preset parameters
• Operates with a power device which connects – disconnects the load from the system
P2-3
P.2
Breaking device
Earth leakage and overload/short circuit protection systems with self-reclosing
The breaking element always operates as a power switch. It supports the line power to be protected and is external to
the relay.
The breaking elements which can be associated to the self-reclosing relays are:
• Motorized circuit-breaker (MT series) (see page 24)
• Contactor
• Disjunctor with remote-control (MCB) (see page 23), with the double function of overload/short-circuit protection and
contactor (the funtion of the contactor is bistable)
The features to be known from the breaking device are:
• Rated current (in the contactors)
• Rated current and protection thermal curve (in circuit-breakers)
• Features of the command inputs in the operating element
• Cut-off power
• NO or NC auxiliary signalling of the status of the breaking device
Reclosing
Protection
Earth leakage
Page
Earth leakage switch reconnector
6
Differential relay + contactor
8
Earth leakage
Earth leakage
Differential relay + MCB circuit breaker
14
Differential relay + MT circuit-breaker
16
Differential relay + FDE circuit-breaker
18
Overload and Earth leakage
Overload and earth leakage
P2-4
Earth leakage +
overvoltage
Overload and earth leakage
Differential relay + MT circuit-breaker
21
Overload
Overload
RRM relay + MT / FDE circuit-breaker
22
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Parameters related to self-reclosing relays
Relay status indication
The indications are associated to the type of protection done, differentiating between
instantaneous trip or sealing action. The indications are made in the same relay (LED) and
as an option they can be done using auxiliary contacts.
Rated tripping point of the protection
Typical values:
Earth leakage protection 30 mA – 3 A
Overload protection 6 A – 63 A.
Timing (delay) for connection
Minimum time which the earth leakage
must last to cause the relay to trip.
Typical values. 20 ms – 1 s
Relay power supply and tolerance
The self-reclosing relays require
a permanent auxiliary power
supply to be able to manage
the automatic self-reclosing.
Standard value:
230 V ac (± 15 %)
Optional 48 V ac,
110 V ac, 400 V ac.
Time between reclosures
This is the time the relay takes from the trip to the
reclosing.
This time can be lineal or exponential.
Output relay
Number of relays
With sealing
NO or NC output contact
Number of reclosures
differentiating the type / number
Each relay allows a maximum number
of closures before being sealed. This
counter will beautomatically put to zero
if the number of maximum reclosures
has not been exceeded during a
preset time (return to zero time of the
reclosing counters).
This number will be different depending
on the type of reclosing.
Return to zero time for the reclosing counters
In order to avoid accumulations of trips which do not belong to the
same fault, a return to zero time for the reclosing counters is set.
This time restarts after each reclosing whenever the maximum
number of reclosures is not exceeded.
Example: The WRU 25 RA relay has a maximum number of
reclosures of six before being sealed.
In an installation where the transient earth leakage fault lasts for 50
s, the relay will trip 4 times and will reclose 3 times (8 s + 16 s +
30 s). While the third reclosing is being timed, the fault disappears,
so the relay will stay on ON. At this time the counter of reclosures
returns to zero. The RESET option restarts the relay returning the
reclosing counters to zero.
On site Test and Reset (using the keypad) and remote
The automatic earth leakage reclosing relays offer the
same benefits as the U series earth leakage protection.Very
important possibility to check the proper operation using TEST
and RESET on the keypad and remotely through the specific
inputs.
The test is interpreted by the relay as an external leak,
reconnecting after a certain time and increase the internal
reclosing counter.
The reset option restarts the relay, returning in the reclosing
counters to zero.
P2-5
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Earth leakage protection and self-reclosing
EARTH LEAKAGE PROTECTION WITH AUTOMATIC SELF-RECLOSING-REC
In most of the cases (95 %), when your earth leakage protection is tripped, a simple manual reclosing solves the problem
because there is no permanent leakage.
If there is no REC automatic reconnector, this simple, manual reclosing operation may become a serious problem if there
is nobody nearby or even if the earth leakage trip is not known:
• Food rots in the fridge
• Plants wither through lack of watering
• Swimming pool`s water goes bad
• The alarm system does not protect
• The tilting garage door does not work
• Your farm may suffer serious damage
• There is no mobile telephone coverage (fault with
telephone repeater)
• The ATM does not work
• Streets and squares remain in the dark
• Traffic lights stop working
• etc.
t
h
e
Earth leakage protection with automatic self-reclosing
Terminals for the command line:
N - L: 230 V AC power supply
LI: external reclosing order (optional)
Free of power output to indicate
the status of the protection
Motor
Earth leakage protection
2 or 4 pole breaking element
Manual switch (yellow lever):
I position: automatic operation
0 position: self-reclosing not allowed
The reclosing counter returns to zero if:
• Leakage is not permanent
• When reclosing manually
Number of reclosures
Time between reclosures
6
10, 20, 30, 60, 120, 600 s
Hole for padlock
Possibility of manual locking with padlock
Earth leakage protection required by current legislation protects people, but unforeseen trips can also provoke the lack
of electrical supply in important installations.
REC from CIRCUTOR is safe, easy to install, economic and small, and will guarantee self-reclosing in your installation
whenever the leakage is not permanent.
P2-6
P.2
REC 2 Poles
Poles
Class
In
(A)
2
AC
40
30 mA
REC 2-40-30
P24111
2
AC
40
300 mA
REC 2-40-300
P24121
2
AC
63
30 mA
REC 2-63-30
P24114
2
AC
63
300 mA
REC 2-63-300
P24124
4
AC
40
30 mA
REC 4-40-30
P24112
4
AC
40
300 mA
REC 4-40-300
P24122
4
AC
63
30 mA
REC 4-63-30
P24113
4
AC
63
300 mA
REC 4-63-300
P24123
Sensitivity
Type
Earth leakage and overload/short circuit protection systems with self-reclosing
REC
Code
A Class, On request
REC 4 Poles
Reclosing
Protection
Earth leakage reclosing
Earth leakage protection
Electromechanical AC or
A, according to type
Class
Measuring
Number of reclosures
6
Time between reclosures
10, 20, 30, 60, 120, 600 s
Instantaneous value
30 mA or 300 mA (according to type)
Sensitivity I∆n
Delay
Same as last time between reclosures
(For example: final reclosing on the third
attempt → return to zero time: 30 s)
Return to zero time
for partial counter
Fixed at 20 ms
Differential transformer
Built-in
Test
Via built-in push-button
Reset
Manual, by lifting the lever
Asociated breaking element
In and number of poles
Safety seal
Using disconnection lever
Remote signalling (outputs)
Voltage free switched relay for status indication
Remote-control (inputs)
External reset using push-button
Built-in
In 40 A or 63 A , 2 or 4 poles
Breaking element control
Electromechanical relay
Features
2 poles
4 poles
Electrical features
Auxiliary power supply
Output contacts
230 / 400 V ac, 50...60 Hz
2 A maximum for 250 V ac / 24 V dc
Operating temperature
-25 ... + 55 ºC
Assembly features
Mounting
Dimensions
Weight
Protection degree
Standards
DIN rail
5 modules (90 x 90 mm)
7 modules (125 x 90 mm)
560 g
693 g
IP 40
IEC 61008-1, IEC 755, IEC 255-5
P2-7
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Earth leakage protection and reclosing
IMMUNIZED RELAY WITH SETTABLE SENSITIVITY AND DELAY
Switch formed by:
Earth leakage relay + contactor
Immunized A class
High-frequency filtering
Leakage current level
indicator via variable flashing
Settable delay
Settable sensitivity
Number of poles and
line current defined
by the contactor
Earth leakage protection + earth leakage reclosing
APPLICATIONS
Street lighting
Office blocks
• Traffic lights
• Car parks
• Cooling chambers
P2-8
P.2
Class
In (A)
Poles
Useful
diameter
∅ mm
I∆n or Sensitivity
(A)
Delay (s)
Type
Earth leakage and overload/short circuit protection systems with self-reclosing
Earth leakage relay with built-in transformer
Code
A
63 (*)
2, 3, 4
25
0,03...3
0,02...1
WRU-25 RA
P24211
A
125 (*)
2, 3, 4
35
0,03...3
0,02...1
WRU-35 RA
P24221
(*) According to contactor
Type
Number of
reclosures
Time between
reclosures (s)
WRU-25 RA
6
8,16,30,59,115,224
WRU-35 RA
6
8,16,30,59,115,224
WRU-35 RA
+
Complete set formed by:
Earth leakage relay + Contactor
WRU-25 RA
Protection
Reclosing
WRU 25 RA
WRU 35 RA
WRU 25 RA
Earth leakage reclosing
Earth leakage protection
Class
Selectable 30 mA...3 A
Delay
Selectable 20 ms ... 1s
Test and Reset
Built-in ∅ 25 mm
6
Time between
reclosures
TRMS
Sensitivity I∆n
Differential
transformer
No. of reclosures
A superimmunized
Measuring
8, 16, 30, 59, 115, 224 s
Return to zero time
of partial counter
Built-in ∅ 35 mm
15 minutes
Signalling in the relay
– Presence of voltage indication
– Sealed reclosing
– Indicates the presence
of leakage current without
reaching the tripping point
Via built-in push-button
LED
Associated
breaking element
Contactor
In and number
of poles
Defined by contactor
Breaking element
control
WRU 35 RA
1 switched relay
Remote indication
0 ... 60 mV ac signal
Remote-control
(inputs)
External test using push-button
Features
WRU 25 RA
WRU 35 RA
Electrical features
Auxiliary power supply
230 V ac (± 20 %) 50...60 Hz
Breaking element control contacts
250 V ac / 8 A a.c.
Operating temperature
-10 ... +50 ºC
Mechanical features
Mounting
Dimensions
Weight
Protection degree
Standards
DIN rail
4 modules
6 modules
234 g
415 g
Terminals: IP 20, Embeded relay: IP 41
IEC 61008-1, IEC 755, IEC 255-5
P2-9
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Earth leakage relay with external transformer
I∆n
(A)
Delay
(s)
0,03...30
0,02...10
-
0,03...30
0,02...10
RS-485
Communications
Number of
reclosures
Breaking element control
Remote signalling
Type
Code
Programmable
NO relay-Positive safety
Programmable
NO relay-Positive safety
Sealed relay
RGU-10 RAL
P24622
-
RGU-10C RAL
P24662
Selection of differential transformer
according to rated line current
+
+
RGU-10-RAL
Useful
diameter (mm)
Type
Code
35 ∅
WG-35
P10111
70 ∅
WG-70
P10112
105 ∅
WG-105
P10113
140 ∅
WG-140
P10114
210 ∅
WG-210
P10115
Complete set formed by:
Earth leakage relay + WG transformer + Contactor
Protection
RGU-10 RAL
RGU-10 RAL
Earth leakage protection
Earth leakage reclosing
Class
A superimmunized
Measuring
Sensitivity I∆n
Delay
Reclosing
TRMS
Programmable 30 mA...30 A
Programmable 20 ms ... 1s
Inverse curve: Instantaneous or selective
Differential
transformer
External, WG series
Test and Reset
Number of
reclosures
Programmable: 0... 10
Time between
reclosures
Programmable: 1... 900 s
Return to zero
time of partial
counter
15 / 30 minutes
Signalling in the relay
Via built-in push-button
Associated
breaking
element
- Presence of voltage
- One of the channel tripped
- Reclosing enabled
- Sealed status
LED
Contactor
Display
In and number
of poles
Defined by contactor
Breaking
element control
1 switched relay
LCD
Remote signalling
(outputs)
Remote-control
(inputs)
Features
RGU-10 RAL
Electrical features
Auxiliary power supply
Breaking element
control contacts
Operating temperature
230 V ac (± 20 %) 50...60 Hz
250 V ac / 6 A a.c.
-10 ... +50 ºC
Mechanical features
Mounting
Dimensions
Weight
P2-10
DIN rail
3 modules
236 g
Protection degree
Terminals: IP 20, Embeded: IP 41
Standards
IEC 61008-1, IEC 755, IEC 255-5
Prealarm relay
ON / OFF
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Other earth leakage relays with different functions
Relays with built-in transformer
Useful
diameter
∅ mm
I∆n
(A)
Delay
(s)
Number of
reclosures
Breaking element
control
25
0,03...3
0,02...1
30
25
0,03...3
0,02...1
30
25
0,3...1
0,02
30
Remote
signalling
Type
Code
Switched relay
-
WRU-RM
P24231
1 NO contact
1 NO contact
WRU-RT
P24431
1 NC contact
1 NO contact
WRU-25-2R
P24412
Protection
WRU-25-2R
WRU-RM
WRU-RT
Earth leakage protection
Class
A superimmunized
Measuring
Sensitivity I∆n
Delay
TRMS
Settable 300 mA ... 1 A
Selectable 30 mA ... 3 A
Fixed 20 ms
Selectable 20 ms ... 1 s
Differential transformer
Built-in Ø 25 mm
Test and Reset
Via built-in push-button
Associated breaking
element
Contactor
In and number of poles
Defined by contactor
Reclosing
WRU-25-2R
WRU-RM
WRU-RT
Earth leakage reclosing
Number of reclosures
Time between reclosures
Return to zero time
of partial counter
31
30
1st at 2 min., 2nd at 4 min.,
remainder every 6 min.
20 s, 40 s and the remainding
28 every 5 minutes
15 minutes
15 minutes
Features
WRU-25-2R
WRU-RM
WRU-RT
Electrical features
Auxiliary power supply
Breaking element
control contacts
Operating temperature
230 V ac (± 20%) 50...60 Hz
250 V ac / 8 A a.c.
-10 ... +50 ºC
Mechanical features
Mounting
Dimensions
Weight
DIN rail
4 modules
234 g
Protection degree
Terminals: IP 20, Embeded: IP 41
Standards
IEC 61008-1, IEC 755, IEC 255-5
P2-11
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Other earth leakage relays with different functions
Relays with external transformers
I∆n
(A)
Delay
(s)
0,03...3
0,02...10
0,03...30
0,02...10
RS-485
Prog: 0...10
8 ralays (independent)
Pre-alarm relay
CBS-8
P12811
0,03...30
0,02...10
RS-485
Prog: 0...10
8 relays (independent)
Pre-alarm relay
CBS-4C RA
P24912
0,03...30
0,02...10
RS-485
Prog: 0...10
8 relays (independent)
Pre-alarm relay
CBS-4 RAL
P24A11
0,03...30
0,02...10
RS-485
Prog: 0...10
8 relays (independent)
Pre-alarm relay
CBS-4C RAL
P24A12
Communications
Number of
reclosures
Breaking element
control
Remote
signalling
Type
Code
Programmable
4 relays (independent)
Switched relay
CBS-4 RA
P24911
Protection
CBS-4 RA / CBS-4 RAL
CBS-8
Earth leakage protection
Class
A superimmunized
Measuring
Sensitivity I∆n
TRMS
Selectable 30 mA...30 A
0,03…6 A with external transformers WG/WGS
0,03…60 A with external transformers WGP/WGPS
Programmable 0,20 ms ... 10 s
Inverse curve: Instantaneous or selective
Delay
Differential transformer
External, WG series
Test and Reset
Via built-in push-button
Associated breaking
element
Contactor
In and number of poles
Defined by contactor
Reclosing
CBS-8
Earth leakage reclosing
No. of reclosures
Programmable
Time between reclosures
Programmable
Return to zero time
of partial counter
Programmable
Features
RGU-RA
CBS-8
Electrical features
Auxiliary power supply
230 V ac (± 20 %) 50...60 Hz
Breaking element control contacts
250 V ac / 8 A a.c.
Operating temperature
-10 ... +50 ºC
Mechanical features
Mounting
Dimensions
Weight
P2-12
Panel / DIN rail
DIN rail
3 modules
8 modules
236 g
609 g
Protection degree
Terminals: IP 20, Embeded: IP 41
Standards
IEC 61008-1, IEC 755, IEC 255-5
P.2
•
•
•
•
8 earth leakage protection programmable relays, A class
Frequency filtering
Disconnection delay using inverse curve
Independent programmation per channel
Earth leakage and overload/short circuit protection systems with self-reclosing
CBS-8
Reduction of unforeseen trips
Increases the continuity of the production
process
Smaller size
Visualization in TRMS
Signalling LED
- Instantaneous earth
leakage current
- Tripping earth Leakage current
2 signalling LEDs:
- ON / Fault trip
- Pre-alarm / Reclosing status
Connection indicator
Test and reset push-buttons
With the associated
breaking element to carry
out earth leakage protection
Test and reset push-buttons
Parameter visualization
Programmable
Setting using rotating parameter menu.
4 buttons
- Sensitivity
- Delay
- Channel to be set
Communications
Possibility of for RS-485 Communications.
MODBUS Protocol.
Only displays programming parameters,
leakage values and status of each channel.
Accessories
TT
(see page 26)
WG and WGP
differential transformers
(see page 26)
P2-13
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Overload and earth leakage protection / Earth leakage reclosing
IMMUNIZED RELAY WITH SETTABLE SENSITIVITY AND DELAY
Switch formed by:
Earth leakage relay + circuit breaker
Immunized A class
High-frequency filtering
Settable
delay
Settable
sensitivity
+
Leakage current
level indicator via
variable flashing
Relay input:
WRKRT-25 T : for reclosure
WRKRT-25 N : for remote control
Number of poles and
line current defined by
the circuit breaker
Overload and earth leakage protection + earth leakage reclosing
Applications
Street lighting
Telephone systems
• Traffic lights
• Cable TV
P2-14
P.2
Poles
Useful
diameter
∅ mm
In (A)
Delay (s)
Type
Earth leakage and overload/short circuit protection systems with self-reclosing
Earth leakage relay with built-in transformer
Code
Up to 63 A
2, 3+N
25
0,03...3
0,02...1
WRKRT-25 T
P23111
Up to 63 A
2, 3+N
25
0,03...3
0,02...1
WRKRT-25 N
P23121
With sensitivity adjustment on 0.03 A, delay cancelled
Complete set formed by:
Earth leakage relay + MCB circuit breaker
(suitable for the line)
Protection
Reclosing
WRKRT-25 T
WRKRT-25 N
WRKRT-25 T
Earth leakage and overload protection
Class
A Superimmunized
Measuring
TRMS
Sensitivity
Selectable 30 mA ... 3 A
Delay
Selectable 20 ms ... 1 s
Number of reclosures
Time between reclosures
Test and Reset
MCB.T circuit breaker
Number of poles , In, thermal
curve, cut off power
6
20 s, 40 s, the
remainding 28
every 5 minutes.
30 s, 1, 2, 4,
8, 16 min
15 minutes
Signalling in the relay
Via built-in push-button
Associated breaking element
30
Return to zero time
of partial counter
Built-in ∅ 25 mm
Differential transformer
WRKRT-25 N
Earth leakage reclosing
MCB.P circuit breaker
LED
Defined by circuit breaker
Remote-control (inputs)
- Presence of voltage indicator
- Sealed reclosing
- Indicates the presence of leakage
current without reaching the tripping point
External reset
using button
Inputs ON (earth
leakage only)
and relay OFF
Features
WRKRT-25 T / WRKRT-25 N
Electrical features
Auxiliary power supply
Breaking element
control contacts
Operating temperature
WRKRT-25 T / WRKRT-25 N
Mechanical features
230 V ac (±20 %) 50...60 Hz
Maximum current 3 A a.c.
Mounting
Dimensions
Weight
-10 ... +50 ºC
Protection degree
Standards
DIN rail
4 modules
235 g
Terminals: IP 20,
Embeded: IP 41
IEC 61008-1, IEC 755,
IEC 255-5, IEC 947-2
Accessories
Circuit breaker MCB
(page 23)
P2-15
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Overload and earth leakage protection and reclosure
IMMUNIZED RELAY WITH SETTABLE SENSITIVITY AND DELAY
Switch formed by:
Earth leakage relay + circuit breaker
Class A immunized.
High-frequency filtering
Settable
delay
+
Leakage current
level indicator via
variable flashing
Settable
sensitivity
Number of poles
and line current
defined by the
circuit breaker
Overload and earth leakage protection +
Overload and earth leakage reclosing
APPLICATIONS
Street lighting
P2-16
Office blocks
P.2
In
Poles
Sensitivity
Type
Code
Up to 63 A
2,4
30 mA
WRU-25 RA-MT
P24241
Type
Number of
reclosures
Time between
reclosures
WRU-25 RA-MT
6
1 minute
Earth leakage and overload/short circuit protection systems with self-reclosing
Earth leakage relay with built-in transformer
Complete set formed by:
Earth leakage relay + MT circuit breaker
Protection
Reclosing
WRU-25 RA-MT
WRU-25 RA-MT
Earth leakage protection
Class
A superimmunized
Measuring
TRMS
Sensitivity I∆n
Selectable 30 mA...3 A
Delay
Selectable 20 ms ... 1 s
Built-in ∅ 25 mm
Differential transformer
Test and Reset
Via built-in push-button
Associated breaking
element
motorized circuit breaker, MT Series
Rated In thermal
curve, cut off power
and no. of poles
Defined by circuit breaker
Breaking element
control
Earth leakage and overload reclosing
Number of reclosures
Time between reclosures
Return to zero time
of partial counter
6
1 minute
15 minutes
In the circuit breaker. Using
disconnection lever.
Safety sealing
Signalling in the relay
- Presence of voltage indicator
- Earth fault indicator and/or
overload/short circuit
LED
Remote signalling (outputs)
Leakage control signal (proportional
alternating voltage)
1 switched relay
Features
WRU-RA-MT
Electrical features
Auxiliary power supply
Breaking element control contacts
Output contacts
230 V ac (±15 %) 50...60 Hz
250 V ac / 8 A a.c.
Maximum current 3 A
Operating temperature
-10 ... +50 ºC
Assembly features
Mounting
DIN rail
Dimensions
4 modules
Weight
234 g
Protection degree
Terminals: IP 20, Embeded: IP 41
Standards
IEC 61008-1, IEC 755, IEC 255-5
Accessories
MT circuit breaker
(page. 24)
P2-17
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Earth leakage relay with external transformer
Class
In (A)
Poles
Toroidal
Delay (s)
Type
Code
A
According to
contactor
2,3,4
WG Series
0,02...1
RGU-10-MT
P24642
A
Accoording
to contactor
2,3,4
WG Series
0, 02...1
RGU-10C-MT
P24652
Type
Number of
reclosures
Time between reclosures
RGU-10 MT
Programmable
Programmable
Complete set formed by:
Earth leakage relay + WG transformer
+ MT / MT-FDE circuit breaker
Protection
Reclosing
Earth leakage and overload reclosing
Earth leakage and overload protection
Class
A superimmunized
Measuring
Sensitivity I∆n
Delay
Differential transformer
Test and Reset
No. of reclosures
Time between reclosures
TRMS
Programmable 30 mA...30 A
Programmable 20 ms ...1 s, 3 s, 5 s,10 s.
Inverse curve: Instant or selective
Return to zero time
of partial counter
Motorized circuit breaker,
MT, MT-FDE Series
Display
In and number of poles
Defined by circuit breaker
Remote signalling (outputs)
1 relay simple
15 / 30 minutes
- Presence of voltage
- A channel has tripped
Reclosing enable
- Sealed status
LED
Associated breaking element
Breaking element control
Programmable: 1... 900 s
Signalling in the relay
External, WG Series
Via built-in push-button
Programmable: 0... 10
LCD
Remote-control (inputs)
Prealarm relay
ON / OFF
Features
Electrical features
Auxiliary power supply
Breaking element control contacts
Operating temperature
230 V ac (± 20 %) 50...60 Hz
5 A a.c. current
-10 ... +50 ºC
Mechanical features
Mounting
Dimensions
DIN rail
3 modules
Weight
236 g
Protection degree
Terminals: IP 20, Embeded: IP 41
Standards
IEC 61008-1, IEC 755, IEC 255-5
Accessories
MT circuit breaker
(page 24)
P2-18
MT-FDE circuit
breaker (page 25)
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Other earth leakage relays with different functions
Relays with built-in transformer
Nº Reclosures
Useful
diameter
∅ mm
I∆n
(A)
Poles
25
0,03
According
to MT
25
0,3
According
to MT
Delay
(s)
Breaking
element control
Remote
signalling
Type
Code
10
Relay ON/OFF
Sealed through
reclosing
WRT-6-25-0,03
P21121
10
Relay ON/OFF
Sealed through
reclosing
WRT-6-25-0,3
P21122
overload
earth
leakage
0,02
2
0,02
2
Protection
Reclosing
WRT-6-25
WRT-6-25
Earth leakage and overload protection
Class
Earth leakage and overload reclosing
A Superimmunized
Measuring
No. of reclosures
TRMS
Sensitivity I∆n
Fixed 30 mA or 300 mA (according to type)
Delay
Fixed 20 ms
Differential transformer
∅ 25 mm built-in relay
Test and Reset
Via built-in push-button
Associated breaking
element
circuit breaker, MT Series
Rated In thermal curve, cut
off power and no. of poles
Defined by circuit breaker
2 per circuit breaker and
10 per earth leakage
Time between reclosures
1 minutes
Return to zero time
of partial counter
30 minutes
Safety sealing
In the circuit breaker .
Using disconnection lever.
Features
Electrical features
Auxiliary power supply
Assembly features
230 V ac (±15 %) 50...60 Hz
Breaking element
control contacts
250 V ac / 8 A a.c.
Output contacts
250 V ac / 8 A a.c.
Operating temperature
Mounting
Dimensions
Weight
-10 ... +50 ºC
Protection degree
Standards
DIN rail
6 modules
425 g
Terminals: IP 20,
Embeded: IP 41
IEC 61008-1, IEC 755, IEC 255-5
Accessories
MT circuit breaker
(page 24)
P2-19
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Other earth leakage relays with different functions
Relays with external transformers
Number of reclosures
Useful
diameter
∅ mm
I∆n
(A)
Poles
According
to WG
0,03 / 0,3
According
to MT
Delay
(s)
Overload
earth
leakage
2
10
0,02
Breaking
element control
Remote
signalling
Type
Code
Relay ON / OFF
2
RGMT
P21130
Protection
Reclosing
Protection
Earth leakage and overload reclosing
Class
A Superimmunized
Measuring
2 per circuit breaker and
10 per earth leakage
Number of reclosures
TRMS
Sensitivity I∆n
0,03 / 0,3 A
Delay
Fixed 20 ms
Differential transformer
Time between reclosures
3 minutes
Return to zero time
of partial counter
30 minutes
External WG Series
Test and Reset
Associated breaking
element
circuit breaker, MT Series
Rated In thermal curve, cut
off power and no. of poles
Defined by circuit breaker
In the circuit breaker.
Using disconnection lever.
Safety sealing
Via built-in push-button
Features
Electrical features
Auxiliary power supply
Assembly features
230 V ac (±15 %) 50...60 Hz
Breaking element
control contacts
250 V ac / 8 A a.c.
Output contacts
250 V ac / 8 A a.c.
Operating temperature
Mounting
DIN rail
Dimensions
6 modules
Weight
-10 ... +50 ºC
350 g
Front: IP 54, casing and
terminals: IP 20
Protection degree
IEC 61008-1, IEC 755, IEC
255-5, IEC 947-2, IEC 60898
Standards
Complete Kits
The equipment is formed by:
• RGMT earth leakage relay
2 Poles
Type
Code
Type
Code
P21210
WRGMT-C-4-10 A
P21221
WRGMT-C-2-10 A
P21211
WRGMT-C-4-16 A
P21222
WRGMT-C-2-16 A
P21212
WRGMT-C-4-20 A
P21223
WRGMT-C-2-20 A
P21213
WRGMT-C-4-25 A
P21224
WRGMT-C-2-25 A
P21214
WRGMT-C-4-32 A
P21225
WRGMT-C-2-32 A
P21215
WRGMT-C-4-40 A
P21226
WRGMT-C-2-40 A
P21216
WRGMT-C-4-50 A
P21227
WRGMT-C-2-50 A
P21217
WRGMT-C-4-63 A
P21228
WRGMT-C-2-63 A
P21218
WRGMT-C-2-6 A
• MT series of motorized circuit
breaker or MT-FDE series
motorized circuit breaker switch
with overload protection function
and breaking element
• Earth leakage transformer,
WG Series
P2-20
4 Poles
P.2
BREAKING ELEMENT: MT
RRM-P, RRM-C
The RRM is a relay for overload protection reclosing. It allows the
control, remote signalling and remote-control of the associated
motorized circuit breaker (MT and MT-FDE series).
The functions of the RRM relay are:
• Motorized circuit breaker control:
- Self-reclosing
- Remote connection/disconnection (not reconnectable)
• Signalling:
- On site via LED
- Remote signalling using relay blocking reclosing in RRM-P
- RS-485 communications in RRM-C
• Automatic switch remote control
Type
Comunication
Code
RRM-P
-
P25130
RRM-C
RS-485
P25131
Complete set formed by:
RRM Relay + MT / MT-FDE circuit breaker
Protection
Reclosing
RRM-P
Protection
RRM-C
RRM-P
Overload
Reclosing
Associated
breaking element
circuit breaker MT Series
Number of poles,
In, thermal curve,
cut off power
Defined by circuit breaker
Breaking element
control
Control motor contact
RRM-C
Overload
Number of programmable
reclosures
Selectable: 0,1,2,4,6,8 times
Time between programmable
reclosures
0.5, 1, 2, 3, 4, 5 minutes
Return to zero time for
programmable partial meter
30 minutes
Safety sealing
In the circuit breaker. Using disconnection lever.
Signalling in the relay
–
–
–
–
LED
Remote signalling (outputs)
Remote control (inputs)
Presence of voltage indicador and no overload trip
Indication of trip through external order
Sealed by ending of reclosures
Reclosing in process
Relay seal
RS-485 communications
ON / OFF free of power input in breaking
element (External OFF not reconnectable)
Features
Electrical features
Auxiliary power supply
Assembly features
230 V ac (±20 %) 50...60 Hz
Mounting
Breaking element control contacts
250 V ac, 1 A
Dimensions
Operating temperature
-10 ... +50 ºC
Weight
Protection degree
Standards
DIN rail
1 module
88 g
Terminals: IP 20, Built-in relay: IP 41
IEC 947-2
Accessories
MT circuit breaker
(page 24)
MT-FDE circuit breaker
(page 25)
P2-21
Earth leakage and overload/short circuit protection systems with self-reclosing
Overload reclosure
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
MCB.P, MCB.T Circuit breakers
The MCB.P or MCB.T are circuit breakers which combine overload
functions with contactor functions in the same equipment.
The MCB.T version also includes two auxiliary contacts which show
the status of the remote control input and the overload input.
Both the MCB.P and the MCB.T version include an ordinary contact
to indicate a trip from an overload device or from the manual action
of the circuit breaker.
There are two trip conditions for the circuit breaker:
• Tripping from overheating, delayed, (overload protection)
• Rapid tripping, electromagnetic (protection against shortcircuiting)
Remote-control operates on the same contacts as the overload device. It guarantes disconnection for any event by remote control
after manual or overload device tripping. The remote control operates electro-magnetically, applying a control voltage lasting 20
ms, to the ON terminals (Terminals 1-3) and OFF terminals (Terminals 2-3).
It includes an optical displays of the system status (red = ON, green = OFF), regardless of the cause of the trip.
2 Poles
4 Poles
MCB.P
MCB.T
MCB.P
MCB.T
In (A)
Type
Code
Type
Code
Type
Code
Type
Code
6
MCB.P C-2p-6A
P20210
MCB.T C-2p-6A
P20310
-
-
-
-
10
MCB.P C-2p-10A
P20211
MCB.T C-2p-10A
P20311
MCB.P C-3p+N-10A
P20221
MCB.T C-3p+N-10A
P20321
16
MCB.P C-2p-16A
P20213
MCB.T C-2p-16A
P20313
MCB.P C-3p+N-16A
P20223
MCB.T C-3p+N-16A
P20323
20
MCB.P C-2p-20A
P20214
MCB.T C-2p-20A
P20314
MCB.P C-3p+N-20A
P20224
MCB.T C-3p+N-20A
P20324
25
MCB.P C-2p-25A
P20215
MCB.T C-2p-25A
P20315
MCB.P C-3p+N-25A
P20225
MCB.T C-3p+N-25A
P20325
32
MCB.P C-2p-32A
P20216
MCB.T C-2p-32A
P20316
MCB.P C-3p+N-32A
P20226
MCB.T C-3p+N-32A
P20326
40
MCB.P C-2p-40A
P20217
MCB.T C-2p-40A
P20317
MCB.P C-3p+N-40A
P20227
MCB.T C-3p+N-40A
P20327
50
MCB.P C-2p-50A
P20218
MCB.T C-2p-50A
P20318
MCB.P C-3p+N-50A
P20228
MCB.T C-3p+N-50A
P20328
63
MCB.P C-2p-63A
P20219
MCB.T C-2p-63A
P20319
MCB.P C-3p+N-63A
P20229
MCB.T C-3p+N-63A
P20329
Features
2 Poles
4 Poles
2 Poles
Overload
Calibres In (A)
Rated cut off power (IEC 947-2)
Characteristic curve
Rated operating voltage
Operating frequency range
6-10-16-20-25-32-40-50-63
Rated voltage
230 V ac
Activation impulse
< 20 ms
C or D according to type
Deactivation impulse
< 20 ms
230 / 400 V ac
Mechanical features
6...16 A: 20 kA
20...63 A: 15 kA
50...60 Hz
Mounting
Operating temperature
-25 ... +55 ºC
Dimensions
Storage temperature
-40 ... +70 ºC
Mechanical life
Weight
Protection degree
Standards
P2-22
4 Poles
Motor
DIN rail
3 modules
5 modules
20 000 operations
375 g
615 g
IP 20 (DIN 40050)
IEC 947-2, IEC 60898
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
MT Motorized circuit breaker
The MT is a circuit breaker with remote control. It gives protection
against short-circuit and overloads. Also used as a breaking
element. Includes auxiliary contacts for indicating overload status.
After a disconnection from short-circuit, overload or manual
disconnection, the overload switch may be connected again using
an electrical order with the sequence
“CONNECTION
( I ) - DISCONNECTION (0) “
2 Poles
I∆n
4 Poles
Curve C
Curve D
Curve C
Curve D
(A)
Type
Code
Type
Code
Type
Code
Type
Code
6
MT-C-E62-6A
P20110
MT-D-E62-6A
P20130
MT-C-E64-6A
P20120
MT-D-E64-6A
P20140
10
MT-C-E62-10A
P20111
MT-D-E62-10A
P20131
MT-C-E64-10A
P20121
MT-D-E64-10A
P20141
16
MT-C-E62-16A
P20112
MT-D-E62-16A
P20132
MT-C-E64-16A
P20122
MT-D-E64-16A
P20142
20
MT-C-E62-20A
P20113
MT-D-E62-20A
P20133
MT-C-E64-20A
P20123
MT-D-E64-20A
P20143
25
MT-C-E62-25A
P20114
MT-D-E62-25A
P20134
MT-C-E64-25A
P20124
MT-D-E64-25A
P20144
32
MT-C-E62-32A
P20115
MT-D-E62-32A
P20135
MT-C-E64-32A
P20125
MT-D-E64-32A
P20145
40
MT-C-E62-40A
P20116
MT-D-E62-40A
P20136
MT-C-E64-40A
P20126
MT-D-E64-40A
P20146
50
MT-C-E62-50A
P20117
MT-D-E62-50A
P20137
MT-C-E64-50A
P20127
MT-D-E64-50A
P20147
63
MT-C-E62-63A
P20118
MT-D-E62-63A
P20138
MT-C-E64-63A
P20128
MT-D-E64-63A
P20148
Features
2 Poles
4 Poles
2 Poles
Overload
Calibres In (A)
Number de Poles
4 Poles
Motor
6-10-16-20-25-32-40-50-63
2
4
Rated voltage
230 V ac
Minimum voltage
210 V ac
Rated cut off power
10 kA
Activation impulse
50 ms
Characteristic curve
C or D according to type
Desactivation impulse
50 ms
240 / 415 V ac
Mechanical features
Rated operating voltage
Operating frequency range
50...60 Hz
Mounting
DIN rail
Operating temperature
-25 ... +55 ºC
Dimensions (mm)
Storage temperature
-55 ... +55 ºC
Mechanical life
> 20 000 Operations
Weight (g)
645
Protection degree
Standards
5,5 modules
7,5 modules
890
IP 40 (DIN 40050)
IEC 947-2, IEC 60898
P2-23
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
MT-FDE, MT-FEE Motorized
circuit breaker
MT-FDE series are circuit breaker with remote control. They
provide protection against short-circuit and overloads. Also
used as a breaking element.
After a disconnection from short-circuit or overload, the circuit
breaker may be reconnected.
The reclosing is done in a different way using the position of
the lever in operating mode:
• “MANU” is done manually in the same switch using the
sequence OFF and then ON
• “AUTO” is done using an electrical impulse following the
sequence OFF and then ON
For currents > 63 A
MT-FDE / MT-FEE
3 Poles
4 Poles
In (A)
Type
Weight (kg)
Code
Type
Weight (kg)
Code
80
MT-FDE-80A
2,9
P20D60
MT-FDE-80A
3,4
P20D70
100
MT-FDE-100A
2,9
P20D61
MT-FDE-100A
3,4
P20D71
125
MT-FDE-125A
2,9
P20D62
MT-FDE-125A
3,4
P20D72
160
MT-FDE-160A
2,9
P20D63
MT-FDE-160A
3,4
P20D73
250
MT-FEE-250A
3,8
P20E64
MT-FEE-250A
4,6
P20E74
Features
FDE
FEE
80-100-125-160
250
FDE
Overload
Calibres In (A)
Number of Poles
Rated cut off power (IEC 947-2)
Characteristic curve
Rated operating voltage
Operating frequency range
Motor
Rated voltage
230 V ac
3 or 4 according to type
Minimum voltage
210 V ac
25 kA
Activation impulse
50 ms
C or D according to type
Desactivation impulse
50 ms
240 / 415 V ac
Mechanical features
50...60 Hz
Operating temperature
-25 ... +55 ºC
Storage temperature
-55 ... +55 ºC
Mounting
Dimensions (mm)
Panel (base + pluggable base)
3 Poles: 81 x 130 x 185
4 Poles: 108 x 130 x 185
Weight
According to type
Protection degree
IP 40 (DIN 40050)
Standards
P2-24
FEE
IEC 947-2, IEC 60898
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
Accessories
Earth leakage transformers, WG series
Weight
(g)
Useful
diameter
(mm)
Type
Code
Weight
(g)
Useful
diameter
(mm)
Type
Code
75
20 ∅
WGS-20
P10131
2 400
70x175
WG-70 x 175
P10116
94
30 ∅
WGS-30
P10132
5 450
115x305
WG-115 x 305
P10117
180
35 ∅
WG-35
P10111
7 400
150x350
WG-150 x 350
P10118
13 400
200x500
WG-200 x 500
P10119
274
70 ∅
WG-70
P10112
544
105 ∅
WG-105
P10113
1 222
140 ∅
WG-140
P10114
2 040
210 ∅
WG-210
P10115
Earth leakage transformers, WGP series (only for cbs-8)
Useful diameter
(mm)
Type
Code
20 ∅
WGSP-20
P10141
30 ∅
WGSP-30
P10142
35 ∅
WGP-35
P10121
70 ∅
WGP-70
P10122
105 ∅
WGP-105
P10123
140 ∅
WGP-140
P10124
210 ∅
WGP-210
P10125
Useful
diameter
(mm)
Type
Code
70x175
WGP-70x175
P10126
115x305
WGP-115x305
P10127
150x350
WGP-150x350
P10128
Toroidal protection tube
Type
Code
TT-35
P19911
TT-70
P19912
TT-105
P19913
TT-140
P19914
TT-210
P19915
Adapters
PA-TC/WG
Panel adapter
Description
Equipment
Type
Code
Accessory for
mounting on DIN rail
WG-35 ... WG-210
PA-TC/WG
P19921
Panel adapter
RGU-10 / CBS-4
Panel adapter
M5ZZF1
Dimensions
REC 2P
REC 4P
WRU-25 / WRU-RM / WRU-RT / WRKRT-25
P2-25
P.2
Earth leakage and overload/short circuit protection systems with self-reclosing
WRU-35-RA
CBS-8
WRT-6-25 / RGMT
RGU-10
WRGMT-C2
RRM
P2-26
WRGMT-C4
MCB.P
MT-2 polos
MT-4 polos
P.2
REC 2P
REC 4P
WRT-6-25
CBS-8
WRU-25-RA
WRU-25-2R
WRU-25-RA-MT
WRKRT-25T
Earth leakage and overload/short circuit protection systems with self-reclosing
Connections
WRU-RT
WRU-RM
WRU-35-RA
P2-27
Earth leakage and overload protection con Reclosing automática
P.2
RGU-10 MT
RGU - 10 ral
P2-28
RGMT
RRM-P
RRM-C