Battery Disconnect

AP6C18MC Battery Disconnect Unit

Dynamic Battery Sales & Service (DBSS) offers the -48Vdc High Current Battery Disconnect Unit illustrated below. The Astec Battery Disconnect Units are designed to disconnect batteries manually, for maintenance purposes, or remotely, during emergency situations. They include a battery low voltage disconnect feature. The units have ABB 600A circuit breakers that can be field adjusted down to 420 amps if so desired. Includes alarming. Fits 19 or 23-inch relay racks.


  • Accepts up to 2 lugs per output pole.
  • Lugs can have either 1.00” or 1.75” hole-to-hole spacing for 3/8”-16 bolts.
  • Lugs can be up to 1.55” wide (other spacings available).
  • Full Coverage, Non-conductive side cover assembly.
  • Fits 19-inch or 23-inch panels, Requires 7 “U” (12 ¼”) panel space.
  • “CALIBRATE” switch for setting the battery disconnect threshold
  • “BYPASS” switch inhibits local and remote triggering signals.


Wall mounted or mounted virtually anywhere using unistrut rails.


  • Circuit breaker rated 600 Ampere, 48 vdc, 25,000 AIC
  • Adjustable Trip Curent (420-600A)
  • Operating Range –42Vdc to –60Vdc
  • Recommended Disconnect Voltage –43 +/- .5 Vdc

Mechanical Specifications

  • H 11in (280mm) X W 19 or 32in (483 or 584mm) X D12in (305mm)
  • Weight 52lbs (23.6kg)