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New

Matson 12V 140Amp VSR - Dual Battery Isolator - MA98404

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Reference: MA98404

Condition: New product

Matson 12V 140Amp VSR - Dual Battery Isolator - MA98404

$75.00

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Matson Dual Battery Isolator - VSR * Subject to stock availability * Voltage 12V Amperage 140A Cut In 13.3V Cut Out 12.8V Weight 0.25kg Dimensions 7.7x 8.5x 5cm Other Hermetically sealed (dust and weather proof) Emergency parallel switch The VSR (voltage sensitive relay) allows two batteries to be charged at the same time and then isolates them from each other when the vehicle is turned on. The relay stays open, isolating the two batteries when the engine is ¬rest started, remaining open until the primary battery has reached a preset voltage of 13.3V. The relay then closes, allowing the two batteries to be charged together. When the engine is stopped, the voltage returns to normal levels allowing the relay to open again. This separates the two batteries and eliminates the possibility of discharging the primary/starting battery.