Is it possible to have neutral protection with Masterpact NT/NW three pole circuit breaker.
For three pole circuit breaker the neutral protection is possible with Masterpact NT/NW circuit breaker installed
with Micrologic P and H only. It is not possible with Micrologic A and E.The current transformer for external neutral
is necessary.The wiring diagram is identical to the one used for the residual earth-fault protection.
Please refer the same wiring diagram as given below: