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  1. jfw1

    MCB miniature circuit breaker 480 delta

    Does anyone know of a manufacturer that sells a 480 Delta rated Miniature Circuit Breaker?
  2. jfw1

    MCB miniature circuit breaker 480 delta

    I am working on electrical design of a machine panel supplied by customer 480V delta. They are asking for circuit breakers for the motor connections and while stumbling around learning the difference between UL489 and UL1077, I also noticed MCB (miniature circuit breakers) do not list ratings...

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