Link has been copied to clipboardLow-Voltage Disconnects
Using a low voltage disconnect relay helps prolong vehicle battery life by preventing a charge from draining while the vehicle is idle. Standard and compact relays made by Littelfuse allow users to remotely disconnect and reconnect battery loads. We can also supply the wiring harness assembly needed for connecting a battery to a disconnect relay.
- Inrush current ratings of 2 kA and 2.5 kA
- Maximum continuous voltage ratings of 16 V and 32 V
- Coil ratings of 12 V, 24 V, and 12/24 V
- Continuous current rating of 250 A
- Short-term current ratings of 800 A for 30 s
- Maximum short circuit current ratings of 2 kA for 5 s
- Single pole, single throw (SPST) configuration
- Dustproof and waterproof ratings of IP65, IP67, and IP69K
- Operate at temperatures between –40 ℃ and +85 ℃
- Require no external power when on or off, which reduces waste heat
- Available with time-delay function
- Available with 4-way DIN connectors, Superseal connectors, or 8-way DTM connectors
- Select models have auxiliary contacts
Low-Voltage Disconnects Parts
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Low-Voltage Disconnects Applications
- Agricultural equipment
- Buses
- Construction vehicles
- Heavy-duty trucks
- Marine vehicles and dockside equipment
Low-Voltage Disconnects Resources
Low-Voltage Disconnects Support
Frequently Asked Questions
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What are low-voltage disconnects?
Low-voltage disconnects automatically disconnect electronic components, such as stereos and computers, from a vehicle's battery every time the vehicle is shut off, which lengthens the storage life of the battery.
How do low-voltage disconnects work?
Low-voltage disconnects sense the voltage of a vehicle's battery. When the voltage drops below a set point, the device automatically disconnects the battery from connected loads.