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    Is a time delay available for the Masterpact NW/NT undervoltage trip?


    Issue:
    Need a delay on standard undervoltage relay (UVR) in breaker.

    Product:
    Circuit Breakers

    Environment:
    Applies to Masterpact NW/NT breakers.

    Cause:
    To eliminate circuit breaker nuisance tripping during a temporary voltage dips, operation of the undervoltage trip (MN/UVR) delayed.  This function is achieved by adding a external delay unit (either adjustable or non-adjustable) to the undervoltage trip (MN/UVR) circuit.

    Resolution:
    Yes. Time delay modules can be used with the NW/NT UVR in the following voltages:

    Adjustable (adjustable with dial on the front via pocket screw driver):

    Volts                            Cat. #

    48-60 ac/dc               S33680
    100-130 ac/dc           S33681
    200-240 ac/dc           S33682
    380-480 ac               S33683

    Non-adjustable:

    100-130 ac/dc           S33684
    200-240 ac/dc           S33685
     

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