The interVOLT PSR12150 programmable voltage sensing relay provides automatic battery isolation and charging control for 12 volt systems. Designed for vehicle and off grid applications it senses battery voltage and closes or opens the charge circuit based on programmable voltage thresholds. With a continuous current rating of 150 amps it is suitable for heavy duty dual battery installations where reliable isolation is required to protect the primary supply while allowing alternator charging of auxiliary batteries.

• Nominal voltage 12 V DC
• Continuous current rating 150 A
• Programmable voltage sensing thresholds for connect and disconnect
• Configurable time delay to prevent false triggering from transient voltages
• Designed for dual battery and auxiliary charging systems
• Robust construction for vehicle and marine environments
• Simple wiring and mounting for retrofit or new installations

Ideal for 4WDs caravans boats and portable power systems this relay helps maintain starting battery integrity while charging secondary batteries. Installation should follow manufacturer instructions and wiring best practice. Use the Parts Checker to confirm suitability and compatibility with your specific vehicle or electrical system prior to purchase.