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    How many ON-OFF operations can a circuit breaker withstand?

    Issue:
    How many ON-OFF operations can a circuit breaker withstand?

    Product Line:
    Square D, Powerpact, Masterpact

    Environment:
    Products sold in North America

    Resolution:
    This table lists the UL endurance test requirements for different frame sizes:
     
    Frame Size Full Load Operation No Load Operations
    0-100                               6,000                                     4,000
    101-225                               4,000                                     4,000
    226-600                               1,000                                     5,000
    601-800                                  500                                     3,000
    801-2500                                  500                                     2,000
    2501-4000                                  400                                     1,100

     

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