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Voltage Sensitive Relay 140Amp

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 Product Description

Voltage sensing relay With a set point of 13.3 VDC for connection and a disconnection voltage of 12.8VDC this controller will be perfect for all lower voltage output type dual batteries systems 

Suitable for 140 amp current capabilities and dual sensing for bi-directional charging



When the engine is started, starting and auxiliary batteries are separated allowing only the starting battery to be charged. When the charge voltage reaches 13.3 volts the voltage sensitive relay engages allowing both starting and auxiliary batteries to be charged. This is indicated by the red light in the top LH corner being illuminated.


When the engine is stopped and the battery voltage falls below 12.8 volts the voltage sensitive relay or “VSR” disengages separating the start and auxiliary batteries. The auxiliary battery continues to power any accessories without risk of draining the starting battery.


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