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Product Code: K-VABI001A-SUN

Availability:Out of stock

  • Zero Voltage Drop.Won't rob precious power from your batteries and electrical system, unlike heat sinking competitors.
  • Small Convenient Size.Only about 2 inches tall, wide & deep the isolater fits just about anywhere!
  • Fast & Easy Installation. Simple power wire IN, power wire OUT install. Comes with mounting plate/template.
  • IP65 Weather & Strong Vibration Protection. Suitable for all off-road vehicles and weather exposed applications.
  • Most Efficient Programming in the Business. Ensures your electrical system functions properly and batteries charge accurately.
  • Specially designed for ATV, UTV, boats, RV's, campers, 5th wheels, off road vehicles, Rhino, Polaris, Artic, Cat, Etc.
  • Comes With Necessary Hardware & Mounting Instructions.


This Voltage Sensitive Relay (VSR) allows safe charging and separation of starting and auxiliary batteries in Marine, 4WD, Caravan and Solar applications, 12 Volts, 140A continuous, Water Proof ( IP65 ).When the engine is started, the starting and auxiliary batteries are separated allowing only the starting battery to be charged. When the charge voltage reaches 13.3 volts the VSR 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 VSR disengages separating the start and auxiliary batteries. The auxiliary battery continues to power any accessories without risk of draining the starting battery.This VSR is "Dual Sensing" which senses the voltage of both batteries.This is very useful in that being Dual Sensing (bi directional), you have a battery charger or solar power connected to your auxiliary battery and this battery gets charged enough to the VSR's set points , the VSR then will allow your charging source to back charge the cranking battery as well bringing that to fully charged as well but again, if the voltage drops below 12.8 volts, the VSR will again disconnect (isolate) the batteries.This voltage Sensitive Relays (VSRs) are suitable for a wide variety of DC applications. VSRs sense the input voltage and automatically connect/disconnect the appliance or circuit at the set voltages. The cut-out has a 5 second delay preventing the relay from disconnecting during a momentary drop in voltage.


Continuous Current 140A

Max Current 160A

Current Draw - Charging 280mA

Current Draw - Standby 8mA

Disengage delay 5-10 Seconds

Recommended Fuse 80Amp

Power Studs M6 Stainless Steel

Surge ProtectionBuilt-in


Weight 200g


1 Year Warranty


  • 1 x 12V Voltage Sensitive Relay
  • 1 x Accessories