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

Series: 75900 Double Pole
Questions? Contact Littelfuse Support
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 #PackagingDescriptionDetailsUL listedRatingTerminalsActuatorCaseInstallationVoltage Rating MaxMax total continuous currentInrush rating (2 seconds)Terminal sizeTemperature rangeContact MaterialsCompare
24505-01Battery Disconnect Switch Lock Out Kit w/Mounting Panel and LeverChrome Lever
75903BulkBattery Disconnect Switch 125A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 125A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Chrome LeverPlated Steel3/4in Through hole36V125A1000A x 15 sec.-40°C to +85°CCopper
75903-BXBoxBattery Disconnect Switch 125A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 125A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Chrome LeverPlated Steel3/4in Through hole36V125A1000A x 15 sec.Copper
75904BulkBattery Disconnect Switch 175A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 175A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Chrome LeverPlated Steel3/4in Through hole36V175A1000A x 15 sec.3/8/24Silver
75904-01BulkBattery Disconnect Switch 125A 36V DPST Weather ResistantDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 125A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Chrome LeverPlated Steel
Indexing and alignment pin		3/4in Through hole36V125A1000A x 15 sec.-40°C to +85°CSilver Plated Copper
75904-01-BXBoxBattery Disconnect Switch 125A 36V DPST Weather ResistantDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 125A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Chrome LeverPlated Steel
Indexing and alignment pin		3/4in Through hole36V125A1000A x 15 sec.Silver Plated Copper
75904-02BulkBattery Disconnect Switch 175A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 175A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Hencol LockPlated Steel3/4in Through hole36V175A1000A x 15 sec.3/8/24Silver
75904-02-BXBoxBattery Disconnect Switch 175A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 175A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Hencol LockPlated Steel3/4in Through hole36V175A1000A x 15 sec.3/8/2024Silver
75904-03BulkBattery Disconnect Switch 125A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; 125A continuous 1000A intermittent 15 sec. On 5 min. Offtwo 3/8-24 copper studs
two 10-32 studs		KeyPlated Steel3/4in Through hole36V125A1000A x 15 sec.3/8/2024Silver
75904-03-BXBoxBattery Disconnect Switch 125A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; 125A continuous 1000A intermittent 15 sec. On 5 min. Offtwo 1/2-20 copper studs
two 10-32 studs		KeyPlated Steel3/4in Through hole36V125A1000A x 15 sec.3/8/2024Silver
75904-07BulkBattery Disconnect Switch 175A 36V DPST w/HENCOL SealDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 175A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Chrome LeverPlated Steel3/4in Through hole36V175A1000A x 15 sec.Silver Plated Copper
75904-10BulkBattery Disconnect Switch 175A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 175A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		NonePlated Steel3/4in Through hole36V175A1000A x 15 sec.3/8/2024Brass
75904-12BulkBattery Disconnect Switch 125A 36V DPSTDouble Pole - Two Positions: Off-OnUL listed6-36 Vdc; Large studs 125A continuous - 800A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		LeverPlated Steel3/4in Through hole36V125A800A x 15 sec.3/8/2024Silver
75904-BXBoxBattery Disconnect Switch 175A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 175A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuoustwo 3/8 copper studs
two 10-32 studs		Chrome LeverPlated Steel3/4in Through hole36V175A1000A x 15 sec.3/8/2024Silver
75907BulkBattery Disconnect Switch 300A 36V DPSTDouble Pole Off-On - Disconnects battery and field circuits6-36 Vdc; Large studs-2000A intermittent 30 sec. On 3 min. Off; 300A continuous. Small studs-20A continuoustwo 1/2-20 copper studs
two 10-32 studs		LeverPlated Steel3/4in Through hole36V300A2000A x 30 sec.-40°C to +85°CCopper
75907-BXBoxBattery Disconnect Switch 300A 36V DPSTDouble Pole Off-On - Disconnects battery and field circuits6-36 Vdc; Large studs-2000A intermittent 30 sec. On 3 min. Off; 300A continuous. Small studs-20A continuoustwo 1/2-20 copper studs
two 10-32 studs		LeverPlated Steel3/4in Through hole36V300A2000A x 30 sec.Copper
75912BulkBattery Disconnect Switch 125A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 125A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuousfour 3/8-24 studsLeverPlated Steel3/4in Through hole36V125A750A x 15 sec.-40°C to +85°CSilver Plated Copper
75912-BXBoxBattery Disconnect Switch 125A 36V DPSTDouble Pole - Two Positions: Off-On6-36 Vdc; Large studs 125A continuous - 1000A intermittent 15 sec. On 5 min. Off; Small studs 20A continuousfour 3/8-24 studsLeverPlated Steel3/4in Through hole36V125A750A x 15 sec.Silver Plated Copper


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

    • Packaging: Box, Bulk

    • Description: Battery Disconnect Switch 125A 36V DPST, Battery Disconnect Switch 125A 36V DPST Weather Resistant, Battery Disconnect Switch 175A 36V DPST, Battery Disconnect Switch 175A 36V DPST w/HENCOL Seal, Battery Disconnect Switch 300A 36V DPST, Battery Disconnect Switch Lock Out Kit w/Mounting Panel and Lever

    • Details: Double Pole Off-On - Disconnects battery and field circuits, Double Pole - Two Positions: Off-On