Frequently asked questions
A Masterpact NW opens slowly while the spring is being charged with the handle or while the motor is running.
FA228159
28 September 2021
Issue:Masterpact slow opens; what is the problem and fix?
Product Line
Circuit breakers
Resolution:
There is an internal problem with the breaker mechanism causing it to slow-open. This cannot be repaired, so the breaker must be replaced.