M-290 Series - 36V DPST Marine-Grade Manual Master Battery Disconnect Switch

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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.

Ideal for boats, commercial marine vehicles, buses, heavy trucks, and emergency vehicles, the M-290 Series 36V DPST Marine-Grade Manual Master Battery Disconnect Switch features a compact design with a marine-grade, brass case and lever actuator.

The marine battery disconnect switch has double-pole, single-throw (DPST), normally open (NO) circuitry, which reliably disconnects a battery from a vehicle electrical system.

UL listed models, as well as O-ring sealed versions of the marine battery switch, are available to meet the requirements of different applications.

Features and Benefits

  • Available with 175A or 125A continuous current rating for the large studs and 20A continuous current rating for the small studs
  • Marine-grade, brass case and lever actuator make it simple to use the battery cutoff switch in boats, emergency vehicles, and heavy-duty trucks
  • Double-pole, single-throw (DPST), normally open (NO) circuitry for disconnecting a battery from a vehicle electrical system
  • Compact design and through-hole mounting enable easy installation
  • UL listed models are available
  • Select models feature an O-ring seal in the bushing
  • Silver-plated contact options for high conductivity and low contact resistance


  • Commercial Marine
  • Boats
  • Emergency Vehicles
  • Heavy-Duty Trucks
  • Buses/Transit

Access specifications, certifications, check availability and order parts below

Catalog #Current Rating (Continuous) in AmpsVoltage Rating MaxCircuitryActuatorContact MaterialHousingSamplesCompare
M-290-BX17536DPSTChrome LeverSilverBrass
M-290DPSTChrome LeverSilverBrassOrder
M-290-01DPSTChrome LeverSilverBrassOrder
M-290-01-BX17536DPSTChrome LeverSilverBrassOrder
M-290-05DPSTChrome LeverSilverBrassOrder
M-290-05-BX12536DPSTChrome LeverSilverBrassOrder
M-290-0717536DPSTChrome LeverSilverBrassOrder

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