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    What is the function of the Ready-to-close Switch (PF) for the NW or NT breaker?

    PF switch functionality

    Product Line:
    Circuit breakers

    Masterpact NT NW

    The ready-to-close position switch (PF) indicates that the following conditions are
    met and the circuit breaker can be closed:
    o The circuit breaker is open.
    o The closing springs are charged.
    ​o All interlocks are satisfied.
    o There is no standing closing or opening order.


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