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.
12V 140A brand new dual system voltage sensitive relay
Small convenient size, wide application
Suitable for all off-road vehicles and weather exposed applications.
Fast & easy installation, simple power wire IN, power wire OUT install
IP65 Weather & Strong Vibration Protection
Zero voltage drop, won't rob precious power from your batteries and electrical system.
Comes With Necessary Hardware & Mounting Instructions.
Specially designed for ATV, UTV, boats, RV's, campers, 5th wheels, off road vehicles, Rhino, Polaris, Artic, Cat, Etc.
Condition: Brand New
Type: Voltage Sensitive Relay
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 Protection: Built-in
Dimensions: 70x52x70 mm
In the Box
1x 12V 140A Voltage Sensitive Relay
Cables and accessories
1 Year Warranty