Will a Micrologic ammeter trip unit for P and R frame and Masterpact NT/NW breakers be backlit when it has current enough to power the trip unit?


28 September 2021

Product Line:
Circuit Breakers

Yes, all A type trip units should be lit when the breaker has enough current to power the trip unit. 

NOTE:  An alternative option would be to apply 24 Vdc to F1(-)/F2(+) terminals of the trip unit, which will power the trip unit all the time.

See trip unit bulletin for more information 48049-136-05