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Accessories
Connection accessories
Cable connectors (MC)
Ex9M series circuit breakers are available with various accessories including: front connection plate
(JP), cable connector (MC), rear connection plate (RCP), plug-in base (PIA), draw-out base (DOB),
and DIN rails. There accessories provide flexible connection methods for Ex9M series circuit breakers
and ensure circuit safety no matter which type of connection method is used.
Rear connection plate (RCP)
Front connection plate (JP)
The rear connection plate is used for wiring at the back of mounting board so as to cooperate
with distribution board or satisfy other needs.
See Dimension and Installation chapter for wiring dimensions.
It provides a flexible connection method to the circuit breaker. By using this accessory, user can
extend the distance between poles so as to increase the electrical clearance between adjacent
poles at both incoming and outgoing end and improving the safety between lines.
Product name and
figure
Wiring capacity
(mm
2
)
Hole number on
the connector
Ex9M1
Ex9M2
Ex9M3
Ex9M4/
Ex9M5
Ex9M6
Cable
connectors
2.5~75
1 built-in
steel hole
MC21
10~120
MC22
120~240
1 built-in
aluminum hole
MC23
16~95
1 external
aluminum hole
MC21 W
35~240
MC22 W
2× (35~120)
2 external
aluminum holes
MC22 W2
2× (120~240)
MC23 W2
2×240
MC24 W2
3×95
3 external
aluminum holes
MC26 W3
(800A)
4×95
4 external
aluminum holes
MC23 W4
MC26 W4
(1000A
/1250A)
6× (10~35)
6 external
aluminum holes
MC22 W6
Closing electromagnet (XF)
The closing electromagnet is used to close the circuit breaker remotely. When the circuit breaker is
under disconnect or energy storage status, user can use the closing electromagnet to close the circuit
breaker at any time. The closing electromagnet can be controlled by either AC or DC. When the
power supply voltage is within 85%-110% of the rated control power supply voltage, user can use the
closing electromagnet to close the circuit breaker. This is a short time approach, with power-on time
from 0.2s-2s, long time power-on can burn out the circuit breaker.
Electrical characteristics
Rated operating voltage U
e
(V)
AC48/110 /220-260/380-415
DC24/48/110-120/220
Voltage range
85-110%
Pulse duration (s)
0.2~2
Power consumption
AC
5VA
DC
5W
Circuit breaker making time (ms)
<70
Circuit breaker breaking time (ms)
50±10
Rated insulation voltage (kV)
2
Peak current
6XIn
Accessories
Plug-in base (PIA)
DIN-rail adapter
Key parameters of front connection
Front connection: use screws (bolts) for direct connection with busbar, copper or aluminum terminal
lug.
Ex9M1 and Ex9M2 fixed type circuit breakers are mounted on 35mm DIN standard rails, in which
case a DRA rail adapter is needed.
35mm DIN standard rail
Simplified
withdrawable chassis
Standard withdrawable
chassis
L
D
Φ
DRA Din-rail adapter
(only applicable to 3P/4P)
Frame size
Ex9M1
Ex9M2
Ex9M3
Ex9M4
Ex9M5
Ex9M6
Polar distance (mm)
30
35
45
45
65
45
Connecting screw
size
M6
M8
M10
M10
M12
M10
L
≤20
≤25
≤30
≤30
≤50
≤55
D
≤4
≤6
≤8
≤10
≤15
≤20
Φ
>6
>8
>10
>10
>12
>10
Note:
Ex9M6 uses two groups of bolts for connection.
35
Draw-out base (DOB)
●
For fast replacement of circuit breaker, with no need to alter incoming and outgoing
lines and mounting base.
●
User can pre-install the draw-out base for easy addition of extra circuit breakers in the
future.
●
The included safety device ensures the circuit breaker can trip automatically when it
is pulled out under ON status.
Circuit breakers combined with withdrawable chassis have the following two status:
●
Connection status: the power circuit is connected
●
Removable status: the circuit breaker can be removed from the chassis
●
For fast replacement of circuit breaker, with no need to alter incoming and outgoing lines and
mounting base.
●
User can pre-install the plug-in base for easy addition of extra circuit breakers in the future.
●
It can isolate the power circuit if the circuit breaker is thread mounted or base mounted.
●
The included safety device ensures the circuit breaker can trip automatically when it is pulled out
under ON status.
Ex9M1-Ex9M6 front connection
parameters