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Are Molded Case Switches 100% rated?

Issue:
Are Molded Case Switches 100% rated?

Product Line:
Molded Case Switches

Environment:
Application of UL489 listed 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.
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