Chint Power CPS SCA20KTL-DO Installation And Operation Manual page 47

Line circuit Breaker( 3 A)
Light on in trouble free operational
Figure 3-36 Schematic diagram of dry contact communication
If you connect the contact port to the power distribution grid, you must
install an individual miniature circuit-breaker between the dry contact and the
power distribution grid.
Dry contact communication cable connection:
a.) Screw off the nut of the communication cable gland, and take out one of the
seal pins.
(or L N)
+ -
Line circuit Breaker( 3 A)
COM
N.C.
N.O.
COM
N.C.
N.O.
COM
N.C.
N.O.
COM
N.C.
N.O.
COM
N.C.
N.O.
COM
N.C.
N.O.
Light on in error
43
(or L N)
+ -
Fault
In operation
In operation