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140A 12/24v Voltage Sensitive Relay



When the engine is started, starting and auxiliary batteries are separated allowing only the starting battery to be charged. When the charge voltage reaches 13.2 volts the VSR engages allowing both starting and auxiliary batteries to be charged. When the engine is stopped and the battery voltage falls below 12.8 volts the VSR disengages separating the start and auxiliary batteries. The auxiliary battery continues to power any accessories without risk of draining the starting battery.

Additionally, the ePOWER VSR range offers features like :

  • No voltage loss
  • Intelligent battery monitoring to prevent unwanted switching
  • Starter battery priority
  • Bipolar switching
  • Voltage dependent switching


  • Marine
  • Caravans
  • Camper vans
  • RV’s


EN-VSR1224-14010-bits precise µProcessor
Power supplyAuto detect 12 / 24V
Connection batteriesM6
Other connections6.3mm faston
Cable suggestion20mm2
Current consumption in OFF state12V 1.5mA / 24V 1.5mA
Current consumption in ON state13.5V 360mA / 27V 160mA
Minimum Charge time60 sec.
Fast OFF< 11.8V (12V) / < 23.6V (24V) after 4 sec.
IP RatingIP54
Weight (kg)0.11
Dimensions L x W x H (mm)46 x 46 x 80

Note: Specifications subject to change without notice.



Enerdrive Part #Description

Note: Specifications subject to change without notice.