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What are VSR and How to install a VSR - FAQs | Marine Toggle Switch Panels, Fuses, Circuit Breakers Manufacturer | YIS Marine

YIS Marine is a high-quality marines and boats Marine Products, Switch Panel, Led Light, Switch, Plug, Socket, Terminal Block, Bus Bar manufacturer from Taiwan, China since 1992. YIS Marine is a professional manufacturer devoted to providing high quality marine electrical and electronics products. By designing and manufacturing in-house and having quality control at Taiwan headquarter, we are able to offer high quality marine products at competitive prices.

What are VSR and How to install a VSR | Marine Toggle Switch Panels, Fuses, Circuit Breakers Manufacturer | YIS Marine

What are VSR and How to install a VSR | YIS Marine is a professional manufacturer devoted to providing high quality marine electrical and electronics products. By designing and manufacturing in-house and having quality control at Taiwan headquarter, we are able to offer high quality marine products at competitive prices.

What are VSR and How to install a VSR

VSR (Voltage Sensitive Relay) or ACR (Automatic Charging Relay) are automatically controlled relay switches that allow two batteries to be combined when charging, and to be isolated when not charging and current is draining from one of the batteries. This way you can automatically preserve a fully charged battery at all time, especially the start battery for starting the engine. Below is a typically wiring diagram from a VSR in a two Battery system (Start and House batteries).

Normally the VSR senses voltage from the ENG (engine) port to decide whether it should close (make) or open (break) the connection, so if the Engine is ON the sensing voltage would be high and VSR will turn ON and make the connection – allowing BOTH Start and House batteries being charged. And when the Engine is OFF the voltage will drop and VSR will turn OFF by cutting the connection and this way the loads would draw powers from ONLY the house battery – preserving the full power capacity in the Start Battery.

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YIS Marine SI VSR BF453 Digital Voltage Sensing Relay (Smart Battery Isolator) with Start Isolation



What is a VSR Voltage Sensitive Relay and How to install VSR? VSR for Dual battery system explained



SI-VSR (Voltage Sensing Relay with Start Isolation) by YIS Marine all advanced Features explained



VSR Voltage Sensing Relay with Start Isolation Installation Guide BF453



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What are VSR and How to install a VSR | Over 20 Years Marine Electrical Products & Accessories Manufacturer | YIS Marine

Based in Taiwan, China since 1992, Yih Sean Enterprise Co., Ltd. has been a marine electrical and electronic products manufacturer. Their main marine and boat products, include 12/24V accessories, switch panels, fuses, circuit breakers, switches and lights, which has served more than 200 customers worldwide with international safety standards.

YIS Marine is a professional manufacturer devoted to providing high quality marine electrical and electronics products. By designing and manufacturing in-house and having quality control at Taiwan headquarter, we are able to offer high quality marine products at competitive prices. with more than 20 years manufacturing experience for Marine Products, Switch Panel, Led Light, Switch, Plug, Socket, Terminal Block and Bus Bar in Taiwan.

YIS Marine has been offering customers high-quality marine and boat electrical products, both with advanced technology and 20 years of experience, YIS Marine ensures each customer's demands are met.