Resembling trailer homes mounted on pickup trucks, Class C recreational vehicles require electronic components installed in residences and

Series: SR
16-48 V 5-600 A Heavy-Duty High-Cranking Single-Pole Rotary Master Battery Disconnect Switches












Do you have limited behind-panel space for installing a battery disconnect? The SR Series Heavy-Duty High-Cranking Single-Pole Master Battery Disconnect Switch with Rotary Knob features a low profile that's only 3.1" deep or less, making it an ideal solution that allows you to cut off battery power for safety when the vehicle is being serviced or for preventing battery drain when the vehicle is stored.
This manual disconnect switch with a built-in rotary knob can be installed anywhere on a vehicle thanks to its corrosion-free thermoplastic body and ingress protection to either an IP66 rating or IP67 and IP69K ratings. It is also ignition protected to SAE J1171 and ISO 8846 for installation in a battery box or on vehicles carrying hazardous loads.
- Available with 48 V, 32 V, and 16 V max operating voltage and 5 A to 600 A max continuous current ratings to suit a wide range of applications
- 3.1" or less depth allows installation in areas with limited space
- Configurations are available with a built-in lockout/tagout (LOTO) hole
- Thermoplastic construction with either an IP66 rating or IP67 and IP69K ratings stands up to roadsplash and salt spray
- Ignition protected to SAE J1171 and ISO 8846 for installation in a battery box or on vehicles carrying hazardous loads
- Available with tin-plated copper contacts or Molex input terminals
SR Parts
Filters
Part Number | Actions | Current Rating (Continuous) in Amps | Voltage Rating (V) | Circuitry | Ingress Protection | Actuator | Contacts | Housing | Humidity | Agency Approval - Shock | Agency Approval - Vibration |
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Part Number | Actions | Current Rating (Continuous) in Amps | Voltage Rating (V) | Circuitry | Ingress Protection | Actuator | Contacts | Housing | Humidity | Agency Approval - Shock | Agency Approval - Vibration | |
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300 | 32 | SPST | IP67, IP69K | Plastic Knob | Copper | Engineering Thermoplastic | 0 - 95% RH | 50 G | 10 G | |||
300 | 32 | SPST | IP67, IP69K | Plastic Knob | Copper | Engineering Thermoplastic | 0 - 95% RH | 50 G | 10 G | |||
300 | 32 | SPST | IP67, IP69K | Plastic Knob | Engineering Thermoplastic | 0 - 95% RH | 50 G | 10 G | ||||
600 | 32 | IP67, IP69K | Plastic Knob | Engineering Thermoplastic | 0 - 95% RH | 50 G | 10 G | |||||
5 | 12 | SPST | Black Knob | Connector | Engineering Thermoplastic | |||||||
SR Applications


Municipal buses remain the workhorses of public transportation. Electronic devices made by Littelfuse ensure commuter, shuttle, and transit buses

Surface and underground mines cannot produce unless excavators, bulldozers, tractor scrapers, and dump trucks operate consistently, efficiently,

Littelfuse produces electronic components that help electric school buses and buses with internal combustion engines operate efficiently and

We produce components for each electrical system aboard a modern ambulance. Our products include electrostatic discharge suppressors and arc flash

Littelfuse makes essential electronic components for electric, diesel, hydraulic, and pneumatic scissor lifts. Our solutions include plunger and
Highlights Section
- Heavy-Duty Trucks
- Emergency Vehicles
- Tractors and Agricultural Equipment
- Construction Vehicles
- Marine Vehicles
Series: SR Resources

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