75920 Series Master Battery Disconnect Switches Series - 75920 Master Disconnect Switch

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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The 75920 Series Battery Disconnect Switches are high amp capacity, IP67 sealed, heavy-duty products that provide reliable emergency power cut-off. The switches are designed to be used up to 400A with single 4/0 cable at 12V DC or 200 A in 36 Vdc applications, which allows you to apply the switch in a variety of vehicles. Applications include vehicle electrical systems such as heavy truck, off-road, construction, emergency vehicles, material handling, refuse collection, mining, agricultural or marine.

Features & Benefits

  • High amperage capacity: 400A with single 4/0 cable at 12V DC.
  • Can be used in high side or low side applications.
  • Waterproof and dustproof to IP67. Which means the switch can be mounted in exposed locations.
  • Composite engineered polymer housing will not rust or corrode. Tested per SAE 1455 for salt, calcium chloride & magnesium chloride.
  • Large red knob is easy to operate with gloved hands; 90º switch travel makes it easy to identify the switch position.
  • Built-in lockout satisfies OSHA requirements for an energy isolation device.
  • Attractive styling suitable for in cab mounting close to driver.
  • Large divider on base prevents accidental shorting of high energy cables.
  • Fits standard Master Disconnect mounting pattern

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Access specifications, certifications, check availability and order parts below

Catalog #Current Rating (Continuous) in AmpsCurrent Rating (Inrush) in AmpsVoltage Rating MaxCircuitryIngress ProtectionActuatorContact MaterialHousingAgency Approval - ShockSamplesCompare
75920400300036SPSTIP68Red KnobCopperEngineering ThermoplasticOrder
75920-01400300036SPSTIP68Yellow KnobCopperEngineering ThermoplasticTested to SAE J1455Order
75920-02400300036SPSTIP68Black KnobCopperEngineering ThermoplasticOrder
75920-03400300036SPSTIP68Red KnobCopperPlated SteelOrder
75920-05400300036SPSTIP68Red KnobCopperEngineering ThermoplasticTested to SAE J1455Order
75920-05-BX400300036SPSTIP68Red KnobCopperEngineering Thermoplastic
75920-10400300036SPSTIP68Red KnobCopperEngineering ThermoplasticOrder
75920-BP400300036SPSTIP68Red KnobCopperEngineering ThermoplasticOrder
75920-BX400300036SPSTIP68Red KnobCopperEngineering ThermoplasticOrder
75921-02400300036SPSTIP68Black KnobCopperEngineering ThermoplasticOrder
75921-10400300036SPSTIP68Red KnobCopperEngineering ThermoplasticTested to SAE J1455Order
75921-10-BX400300036SPSTIP68Red KnobCopperEngineering Thermoplastic
Obsolete: 2021 -08-10
400300036SPSTIP68Red KnobCopperEngineering Thermoplastic
Obsolete: 2018 -01-11
400300036SPSTIP68Red KnobCopperEngineering ThermoplasticTested to SAE J1455Order

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Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
75920 SW ROT MAST DISC 2POS PLSTC RoHS No 09/30/2013 PbFree No 09/30/2013 CoC_RoHS10_75920 REACH209_Declaration_75920
Does not Contain
75920-04 RoHS No 05/16/2019 PbFree No 05/16/2019 CoC_RoHS10_75920-04 Yes
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