75940-01 - 75940 Series

Series: 75940
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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.

With a patented weld breaker safety feature and integrated lockout/tagout, the 75940-01, Red, Battery Master Disconnect Switch is designed for safely cutting off battery power to all electrical systems aboard heavy-duty vehicles and equipment used in mining, agriculture, construction, and transportation. This Single-pole, single-throw (SPST) manual battery disconnect switch is constructed with a robust engineered polymer housing, offering a contemporary design that stands up to the harsh conditions typically found in commercial vehicle environments. Carrying an IP67/IPX9K rating, the switch is protected against dust, debris, and water.

Features and Benefits

  • Continuous current rating of 200A with 90mm2 cables and 300A with 120 mm2 cables
  • Inrush current rating of 500A per 60s at 23 °C and 1,000A per 15s at 23 °C
  • Single-pole, single-throw (SPST)
  • Engineered polymer design is protected against dust, debris, and water to an IP67/IPX9K rating
  • Patented weld breaker safety feature
  • Built-in lockout/tagout
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Product Literature


Property (Mouseover for details) Value
Current Rating (Continuous) in Amps 300
Current Rating (Inrush) in Amps 1000
Voltage Rating (Max) 32
Circuitry SPST
Ingress Protection IP67, IPX9K
Output Terminals M10
Actuator Removable Red Handle
Actuator Details Red
Contact Material Copper
Housing Black Plastic
Mounting Method Pass-Through
Hardware Stainless Steel
Recommended Torque 16-20 Nm

pdficon 75940 Instruction Sheet

75940 Instruction Sheet
pdficon 75940 Datasheet

75940 Datasheet
pdf icon 3D Model - 75940

pdficon 2D Print Guide

2D Print Guide
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