







With a patented weld breaker safety feature and integrated lockout/tagout, the 75940-Series 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.
- 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
- Engineered polymer design is protected against dust, debris, and water to an IP67/IPX9K rating
- Removable handle available in red, yellow, or black with hole accepting up to 6mm\ lockout/tagout shackle
- Patented weld breaker safety feature
- Built-in lockout/tagout
75940 Parts
Filters
Part Number | Actions | Current Rating (Continuous) in Amps | Current Rating (inrush) in Amps | Voltage Rating (V) | Circuitry | Ingress Protection | Output Terminals | Actuator | Actuator Details | Contacts | Housing | Mounting Method | Hardware | Recommended Torque |
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Part Number | Actions | Current Rating (Continuous) in Amps | Current Rating (inrush) in Amps | Voltage Rating (V) | Circuitry | Ingress Protection | Output Terminals | Actuator | Actuator Details | Contacts | Housing | Mounting Method | Hardware | Recommended Torque | |
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300 | 1000 | 32 | SPST | IP67, IPX9K | M10 | Removable Red Handle | Red | Copper | Black Plastic | Pass-Through | Stainless Steel | 16-20 Nm | |||
300 | 1000 | 32 | SPST | IP67, IPX9K | M10 | Removable Red Handle | Red | Copper | Black Plastic | Pass-Through | Stainless Steel | 16-20 Nm | |||
300 | 1000 | 32 | SPST | IP67, IPX9K | M10 | Removable Red Handle | Yellow | Copper | Black Plastic | Pass-Through | Stainless Steel | 16-20 Nm | |||
300 | 1000 | 32 | SPST | IP67, IPX9K | M10 | Removable Red Handle | Yellow | Copper | Black Plastic | Pass-Through | Stainless Steel | 16-20 Nm | |||
300 | 1000 | 32 | SPST | IP67, IPX9K | M10 | Removable Red Handle | Yellow | Copper | Black Plastic | Pass-Through | Stainless Steel | 16-20 Nm | |||
300 | 1000 | 32 | SPST | IP67, IPX9K | M10 | Removable Red Handle | Black | Copper | Black Plastic | Pass-Through | Stainless Steel | 16-20 Nm | |||
300 | 1000 | 32 | SPST | IP67, IPX9K | M10 | Removable Red Handle | Black | Copper | Black Plastic | Pass-Through | Stainless Steel | 16-20 Nm |
75940 Applications
- Mining
- Agricultural
- Construction
- Transportation
- Emergency Vehicle
Series: 75940 Resources

Littelfuse-Commercial Vehicle Catalog
Find electronic components for trucks, buses, and construction, agricultural, marine, material handling, recreational, and marine vehicles.
