75900 Double Pole Series - DPST Master Disconnect Switch for two high current loads

Series: 75900 Double Pole
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Littelfuse Double Pole Master Disconnect Switches will disconnect the battery and the alternator or generator field circuit. Each pole handles 125A (continuous) at up to 36V DC. The Double Pole Master Disconnect Switches include four 3/8” -24 stud terminals, lockwasher and two brass hexnuts per stud.

Features and Benefits

  • Controls two systems, or it can be used to disconnect both positive and negative of the same circuit (which is required in some countries.)
  • Contact ratings: 125A continuous, 750A intermittent.
    • 75907: 300A continuous, 750A intermittent.
  • Silver contact surfaces. Epoxy-sealed and gasket-sealed.
  • Both poles are separately insulated.
  • Compatible with Littelfuse lock-out kits.
  • 3/4”-16 thread. Fits panels up through 1/4” (6.4mm).
  • O-ring seal in mounting stem; gasket seal at terminal insulator. Epoxy seal at case, mounting stem and locating pin.

Product Literature

Access specifications, certifications, check availability and order parts below

Catalog #Current Rating (Continuous) in AmpsCurrent Rating (Inrush) in AmpsVoltage Rating MaxCircuitryActuatorContact MaterialHousingMounting MethodMounting stemCompare
24505Diecast LeverSurface3/4in dia / 19.1mm dia
24505-01Diecast Lever3/4in dia / 19.1mm dia
24505-BXDiecast Lever3/4in dia / 19.1mm dia
75903125100036DPSTChrome LeverCopperPlated SteelBrass 3/4 - 16 thread 23/32 long fits panel through 3/16 thick
75903-BX125100036DPSTChrome LeverCopperPlated SteelBrass 3/4 - 16 thread 23/32 long fits panel through 3/16 thick
75904175100036DPSTChrome LeverSilverPlated SteelBrass 3/4 - 16 thread 23/32 long fits panel through 3/16 thick
75904-01125100036DPSTChrome LeverSilver Plated CopperPlated Steel, Indexing and alignment pinBrass 3/4 - 16 thread 17/32 long fits panel through 1/4 thick
75904-01-BX125100036DPSTChrome LeverSilver Plated CopperPlated Steel, Indexing and alignment pinBrass 3/4 - 16 thread 17/32 long fits panel through 1/4 thick
75904-02175100036DPSTHencol LockSilverPlated SteelBrass 3/4 - 16 thread 17/32 long fits panel through 1/4 thick
75904-02-BX175100036DPSTHencol LockSilverPlated SteelBrass 3/4 - 16 thread 17/32 long fits panel through 1/4 thick
75904-03125100036DPSTKeySilverPlated SteelBrass 3/4 - 16
75904-03-BX125100036DPSTKeySilverPlated SteelBrass 3/4 - 16
75904-07175100036DPSTChrome LeverSilver Plated CopperPlated SteelBrass 3/4 - 16
75904-10175100036DPSTNoneBrassPlated SteelBrass 3/4 - 16 thread 23/32 long fits panel through 3/16 thick
75904-1212580036DPSTLeverSilverPlated Steel
75904-BX175100036DPSTChrome LeverSilverPlated SteelBrass 3/4 - 16 thread 23/32 long fits panel through 3/16 thick
75907300200036DPSTLeverCopperPlated Steel3/4 - 16 thread fits panel through 1/4 thick
75907-BX300200036DPSTLeverCopperPlated Steel3/4 - 16 thread fits panel through 1/4 thick
7591212575036DPSTLeverSilver Plated CopperPlated SteelBrass 3/4 - 16 thread 17/32 long fits panel through 1/4 thick
75912-BX12575036DPSTLeverSilver Plated CopperPlated SteelBrass 3/4 - 16 thread 17/32 long fits panel through 1/4 thick
24505Diecast LeverSurface3/4in dia / 19.1mm dia
24505-BXDiecast Lever3/4in dia / 19.1mm dia


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Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
75912 SW MASTER DISCONNECT DPST RoHS No 08/18/2019 PbFree No 08/18/2019 CoC_RoHS9_75912_08-19-2019 REACH201_Declaration_with_Pb_75912_08-19-2019 Yes
08/18/2019		 Contains
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