Heavy-Duty Single-Pole Series - Master Battery Disconnect Switches

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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.

Designed for quickly disconnecting the battery from a vehicle's electrical system, Heavy-Duty Single-Pole Series Master Battery Disconnect Switches help prevent potential thermal events and ensure system shutdown during maintenance for the safety of service personnel.

These Cole Hersee brand master battery disconnect switches also prevent parasitic loads from draining the battery during periods of inactivity, such as long-term or seasonal vehicle storage.

With heavy-duty, plated-steel or brass housing options as well as as available models with O-ring and gasket sealing, these master disconnect switches are ideal for heavy-duty truck, construction, emergency vehicle, bus and transit, and agricultural applications.

Features and Benefits

  • Available with a maximum voltage rating of 12 VDC, 24 VDC, or 36 VDC
  • Options include models with a continuous current rating of 300 A, 175 A or 40 A at 6 V DC, and 20 A at 12 V DC
  • Plated-steel or brass housing, depending on the model, is ideal for construction, agricultural, and commercial vehicle applications
  • Single-pole, single-throw (SPST) circuitry for disconnecting a battery from a vehicle electrical system
  • Available with brass, copper, or silver-plated contacts for high conductivity and low contact resistance
  • Actuator options include chrome-plated or die-cast levers for ease of operation and removable Hencol keys for added security
  • O-ring and gasket sealing options are available for weather resistance
  • Options with an anti-rotation locator pin are available for simplified mounting
  • Compatible with 24505 series lockout lever kits (sold separately), which enable the use of a padlock for safety and security


  • Heavy-Duty Trucks
  • Construction
  • Emergency Vehicles
  • Agriculture
  • Bus & Transit

Access specifications, certifications, check availability and order parts below

Catalog #Current Rating (Continuous) in AmpsCurrent Rating (Inrush) in AmpsVoltage Rating MaxCircuitryActuatorContact MaterialHousingSamplesCompare
24025-03100024SPSTChrome LeverCopperPlated SteelOrder
24025-04100024SPSTChrome LeverCopperPlated SteelOrder
2484402506SPSTDiecast LeverCopperPlated SteelOrder
2484-02175100036SPSTHencol LockSilverPlated SteelOrder
2484-02-BX175100036SPSTHencol LockSilverPlated SteelOrder
2484-03175100036SPSTHencol LockSilverPlated SteelOrder
2484-03-BX175100036SPSTHencol LockSilverPlated SteelOrder
2484-05175100036SPSTChrome LeverSilverPlated SteelOrder
2484-06175100036SPSTDiecast LeverSilverPlated SteelOrder
2484-06-BX175100036SPSTDiecast LeverSilverPlated SteelOrder
2484-09175100036SPSTDiecast LeverCopperPlated SteelOrder
2484-09-BX175100036SPSTDiecast LeverCopperPlated SteelOrder
2484-1617580036SPSTDiecast LeverSilverPlated SteelOrder
2484-16-BX17580036SPSTDiecast LeverSilverPlated SteelOrder
2484-19100024SPSTHencol LockSilverPlated SteelOrder
2484-19-BX100024SPSTHencol LockSilverPlated SteelOrder
2484-5117580036SPSTNoneBrassPlated SteelOrder
2484-A175100036SPSTDiecast LeverSilverPlated SteelOrder
2484-A-BX175100036SPSTDiecast LeverSilverPlated SteelOrder
2484-BP402506SPSTDiecast LeverCopperPlated SteelOrder
2484-BX402506SPSTDiecast LeverCopperPlated SteelOrder
7590830036SPSTLeverCopperPlated SteelOrder
75908-0230036SPSTChrome LeverCopperPlated SteelOrder
75908-BX30036SPSTLeverCopperPlated SteelOrder

pdficon Heavy Duty Single Pole Datasheet

Heavy Duty Single Pole Datasheet

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
24024 SW MASTER DISCONNECTHENCOL13 RoHS No 09/12/2017 PbFree No 09/12/2017 CoC_RoHS9_24024 REACH201_Declaration_with_Pb_24024 Yes
2484-A SW ROT MAST_DISC 2POS LEVER RoHS No 09/11/2017 PbFree No 09/11/2017 Yes
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