Littelfuse TR Series Battery Disconnect Switches
Littelfuse TR Series Battery Disconnect Switches provide a robust solution for completely cutting off all battery power from vehicle electrical systems. These switches include a built-in lock-out/tag-out mechanism in either the on or off position using a padlock or hasp, ensuring vehicle security and service personnel safety. The TR series battery disconnect switches operate within a temperature range from -40°C to +85°C, maximum continuous current of 500A, and provide a maximum voltage rating of 32Vdc. Typical applications include emergency vehicles, defense, heavy trucks, and construction.
Features
- Direct lockout or tagout capability in on or off position
- Drop-in replacement for competitive master disconnect switches
- Equipped with dual M8 or 5/16” mounting holes
- Includes four tin-plated copper terminals
- IP67 and IPX9K waterproof and dustproof rated
- Offers black, yellow, or red knob options
- Suitable for exposed vehicle mounting
Applications
- Bus and transit
- Construction
- Defense
- Emergency vehicles
- Heavy trucks
Technical Specifications
| Parameters | Values |
|---|---|
| Maximum Voltage Rating | 32Vdc |
| Continuous Current Rating | 500A at 32Vdc with 4/0 cable |
| Ignition Protection | 94V-0 |
| Operating Temperature Range | -40°C to +85°C |
TR Disconnect Switches Dimension Diagram
Littelfuse TR Series Dual-Pole Master Disconnect Switches Product Dimensions (dimensions in mm)
TR Disconnect Switches Configurations
1 - Master Battery Disconnect Dual Pole Switching One Battery, Positive and Negative (shown in ON state); 2 - Master Battery Disconnect Dual Pole Switching Two Batteries (shown in ON state)
Video
This TTI Tech Specs video on Littelfuse TR Series Battery Disconnect Switches highlights their durable design for commercial vehicle applications. These switches offer reliable battery isolation, enhanced safety, and robust performance in demanding environments.
See video transcript below
Video Transcript
If you’re working on the electrical systems in buses or emergency vehicles and you aren’t a lightning-wielding superhero, then you should make sure the battery is disconnected. Littelfuse TR Series of Battery Disconnect Switches can be your personal superhero. These switches have a maximum operating voltage of 32V, a continuous current rating of 500A per circuit, and can be used to switch both 12V and 24V circuits simultaneously. With an IP67 and IPX9K waterproof and dust-proof rating, these switches are perfect for all locations in a vehicle, and their drop-in replacement for competitive master disconnect switches make them ideal for when you need higher vibration capabilities. The built-in lock-out/tag-out in the on or off position using a padlock or hasp makes sure that this switch can be reset during vehicle servicing, and it's available with black, yellow, and red knobs. TR series battery disconnect switches are suitable for heavy trucks, construction, emergency vehicles, bus, transit, and military applications.
