Technical FAQs

Ask a Question

What are blue and black leads for on a breaker with a suffix of 1380?

The black leads are for the shunt trip (1021). The yellow lead is for the ``a`` contact; the blue lead is the is for the ``b`` contact on the 1a1b aux. switch (1212). The blue/yellow striped lead is the aux. switch common.

CTA-ID : 2022442
Was this helpful?
What can we do to improve the information ?