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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

    Schneider Eletric Square D Picture
    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