Low Voltage Disconnect Switch


Cole Hersee Company, a leading manufacturer of electrical and electronic products for the vehicle industry, introduces its new Low Voltage Disconnect (LVD) Switch. Cole Hersee’s LVD Switch eliminates dead batteries by automatically disconnecting non-critical loads from a battery when the battery falls below a predefined threshold. When the battery voltage is restored, the switch automatically restores the functionality of the ancillary equipment.

The LVD Switch prevents the loads from disconnecting during starting. The switch provides over-current, short-circuit and over-temperature protections to ensure a safe and reliable operation. Additionally, Cole Hersee’s LVD Switch is resistant to vibration and mechanical shock, as well as withstands contamination from moisture, dust or salt spray.

The LVD Switch extends battery life. The switch has a 200A at 12V DC rating, and comes with a manual override option to allow users to make or break the connection regardless of the battery voltage.


• Environmental: -40˚C to 85˚C. SAE J1455 & J1113 • Electrical: 150A or 200A continuous. Inrush: 500A (for 5 seconds). 2mA max quiescent current. • Ignition-proof to ISO 8846. • Disconnects when battery drops below 12.1V for 2 minutes, reconnects when battery meets or exceeds 13.0V for 10 seconds. (Factory programmable) • Alarm: Active low, 50mA. Activates 1 minute before disconnect. (Factory programmable) • Accuracy: ±100mV • Electronics sealed to IP67.
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