Issue:
Water damaged Masterpact and Powerpact breakers
Product Line:
Circuit Breakers
Resolution:
Masterpact and Powerpact P and R breakers which have gotten wet are prone to nuisance tripping. Water will interfere with normal operation of the current sensors, reporting more current to the trip unit than actually exists, resulting in tripping with Ir, Ii, Ig, Ap indication, or no indication. Which function trips depends on the magnitude of phantom current reported to the trip unit.
It is also possible for water to compromise the trip unit as well, also causing nuisance tripping.
Once a circuit breaker has become wet enough to nuisance trip, it cannot be restored to reliable operation and the recommendation is to replace the breaker.
Water damaged Masterpact and Powerpact breakers
Product Line:
Circuit Breakers
Resolution:
Masterpact and Powerpact P and R breakers which have gotten wet are prone to nuisance tripping. Water will interfere with normal operation of the current sensors, reporting more current to the trip unit than actually exists, resulting in tripping with Ir, Ii, Ig, Ap indication, or no indication. Which function trips depends on the magnitude of phantom current reported to the trip unit.
It is also possible for water to compromise the trip unit as well, also causing nuisance tripping.
Once a circuit breaker has become wet enough to nuisance trip, it cannot be restored to reliable operation and the recommendation is to replace the breaker.
Released for: Schneider Electric USA
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales inquiry online and an expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Center
Find support resources for all your needs, in one place.
