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MODULAR RESIDUAL CURRENT DEVICE PARTS CH1
From CB & EM
K1
CH1_L1
1
2
W57 BK 1.5
CH1_L2
3
4
CH1_L3
5
6
CH1_N
7
8
A1
A2
Contactor
RC1
SNUBBER
1-phase
CH1_FUSE_FB
W63 BK 1.5
D1
LED
Green
Red
CAB21
The Modular RCD (MRCD) as de ned in IEC 60947-2, are built from the following parts;
contactor K1, controller U3, sensor U5, button S1 and LED indicator D1 for the channel which is always present and
contactor K2, controller U4, sensor U6, button S2 and LED indicator D2 for the channel which is added to make dual outputs.
This MRCD trips below 30mA AC and 6mA DC. The threshold values are determined by the sensors.
The control units U3 and U4 contain failure latches.
C
To outputs
OUT1_L1
Wire used for 3-phase outputs
OUT1_L2
Wire used for 3-phase outputs
OUT1_L3
OUT1_N
U3A
CAB6
P41
J301
J502
U5
1
1
L3_IN
HIGH
1
1
J1001
2
2
2
L2_IN
LOW
2
3
3
L1_IN
ERR
3
3
1
1
ERR
4
4
4
2
4
NEUTRAL
TEST
2
TEST
5
5
RELAY_OUT
X6
5
5
3
3
X6
6
6 FUSE_FB
X30
6
6
4
4
X30
GND
7
7
5
5
GND
J501
VCC
8
8
6
6
VCC
4
9
9
7
7
4
GN
PWM
PWM
2
3
NC
10
10
8
8
NC
3
2
RD
1
1
RCD Sensor
OCL
MODULAR RESIDUAL CURRENT DEVICE PARTS CH2
From CB & EM
K2
CH2_L1
1
CH2_L2
3
W58 BK 1.5
CH2_L3
5
CH2_N
7
A1
A2
Contactor
RC2
SNUBBER
1-phase
CH2_FUSE_FB
W67 BK 1.5
MRCD test
24V from
U3B.J306.4
Appendices
Wire used for 3-phase outputs
2
Wire used for 3-phase outputs
4
6
8
U4A
CAB7
P42
J301
J502
1
1
L3_IN
HIGH
1
1
2
2
2
L2_IN
LOW
2
3
3
L1_IN
ERR
3
3
4
4
4
4
NEUTRAL
TEST
5
5
RELAY_OUT
X6
5
5
6
6 FUSE_FB
X30
6
6
GND
7
7
J501
D2
VCC
8
8
4
9
9
LED
4
GN
PWM
Green
2
3
NC
10
10
Red
3
2
RD
1
1
CAB22
OCL (dual models)
S2
Through U6
X15
buttons
1
221-413
SWITCH
2
S1
Through U5
3
R1
2016-1307
560
SWITCH
Phase
To outputs
rotation
OUT2_L1
OUT2_L2
OUT2_L3
OUT2_N
U6
J1001
1
1
ERR
2
2
TEST
3
3
X6
4
4
X30
5
5
GND
6
6
VCC
7
7
PWM
8
8
NC
RCD Sensor
X5
CTEK AB
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