Are molded case switches 100% rated?

FA176835

28 September 2021

Issue:
Are Molded Case Switches 100% rated?

Product Line:
Molded Case Switches

Resolution:
Yes. Molded case switches are ampere rated and can be used up to 100% of their ampere rating. Please note that molded case switches need to be protected by a fuse or a breaker of equal ampere rating.
The protective breaker may be either an 80% or 100% rated breaker. Therefore, the molded case switch takes on the rating of the fuse or breaker protecting it and can be 100% rated.