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Dual Rated AC/DC Circuit Breakers

Dual Rated AC/DC Circuit Breakers

Circuit breakers that have both dc ratings and ac ratings for application on either system

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Dual Rated AC/DC Circuit Breakers
  • Features

    Standard dual-rated ac/dc circuit breakers may be used in dc system applications and will provide thermal (overload) protection as shown on the ac time-current characteristics curve. These circuit breakers are UL Listed for application in dc systems using the instantaneous trip multiplier for the ac time-current characteristic curve. Standard ac/dc circuit breakers may be used on grounded or ungrounded dc systems. 

    QO/QOB – Available with dc voltage ratings from 48 Vdc to 125 Vdc.
    QOU – Available with dc voltage ratings from 48 Vdc to 125 Vdc
    Multi 9 – Available with dc voltage ratings from 60 Vdc to 125 Vdc
    FA and LA – Available with dc voltage ratings from 125 Vdc to 250 Vdc
    PowerPact® H-frame and J-frame – UL/CSA labeled for applications up to 250 Vdc

    Applications

    Crane & Hoist
    Solar Installations
    OEM Commercial
    Metals
    Healthcare Facilities
    Data Centers