Digital Voltage Sensitive Relay (DVSR) with Start Isolation | Marine Toggle Switch Panels, Fuses, Circuit Breakers Manufacturer | YIS Marine

The BF454 Digital Voltage Sensitive Relay (DVSR) 2.0 by YIS Marine is an advanced, second-generation automatic charging relay that help automatically combine the two battery banks when charging and separate them when not charging, ensuring your batteries are protected from overcharging or depletion. When used with battery switches, VSRs or D-VSR helps to reserve a fully charged battery at all time, avoid the dead battery and possibility of towing on the sea.

The DVSR 2.0 supports both DC 12V and DC 24V systems with a robust 140A (intermittent) and 125A (continuous) capacity. This new generation DVSR also includes Dual Port Sensing, allowing charging from either direction—whether from the starting engine or auxiliary power like solar panel or wind power systems.

One of the major upgrades in the DVSR 2.0 is its Easy-to-Configure wiring design. Unlike traditional VSRs that required cutting loop wires or silicone seals to access optional features, the DVSR 2.0 simplifies this process with terminal blocks. Installation is as simple as inserting stripped wires into the terminals—no cutting or peeling required. This innovation significantly reduces installation time and eliminates the risk of damaging the product’s integrity or IP rating.

The relay offers versatile installation options, including both surface and panel mounting, making it adaptable to various setups. Its dimensions 69 mm x 69 mm are optimized to fit perfectly with our BF441 battery switches and BF43x Fuse Box Series and other popular products in the market, ensuring seamless integration.

The DVSR 2.0 incorporates advanced digital circuit design, allowing it to automatically detect whether it is in a 12V or 24V system and adjust the combined and cutoff voltage accordingly. Additionally, it also features delayed open and close timing: the DVSR would combine or cut-off the circuit 15~30 seconds after voltage threshold is met so to prevent unwanted ON / OFF cycling caused by sudden voltage fluctuations.

Moreover, the DVSR 2.0 boasts ultra-low standby current consumption—only 0.3mA at 12V, which is significantly lower than the 5mA typical in traditional VSRs. This reduction in standby power consumption makes the DVSR 2.0 an energy-efficient choice for modern applications.

Durability and safety are at the core of the DVSR 2.0's design. It is housed in a robust glass fiber-reinforced nylon enclosure, engineered to withstand harsh environments. The relay carries an IP67 waterproof rating, meaning it is completely dust-tight and can endure immersion in water up to 1 meter deep for 30 minutes, making it exceptionally reliable in marine environments. The DVSR 2.0 also meets ISO8846 and SAE J1171 ignition protection standards, ensuring safety in engine rooms and fuel tank spaces. Additionally, the BF454 DVSR 2.0 is CE certified (RoHS, EMC), confirming its compliance with rigorous European safety, health, and environmental protection requirements.

For DIY installers, YIS Marine also offers the BF454-KIT, an all-in-one package that provides everything you need for a seamless installation of the BF454 Digital Voltage Sensing Relay (DVSR) with a secondary battery. This kit includes all the necessary cables, battery terminals, cable crimp lungs, mounting accessories, an instruction manual, and the DVSR itself, ensuring that even first-time installers can easily complete the setup without the hassle of sourcing individual components.

YIS Marine also provides extensive customization options for the DVSR 2.0. Customers can choose from various packaging options, including boxes, hanging boxes, and blister packs. Custom printing options are available, allowing you to display your logo on the product and packaging. Additionally, you can customize label stickers, housing colors, or even the shape to ensure your product stands out in the market and aligns with your brand image.

We take small orders as little as 50 pcs, and sample orders are also welcome. With a low MOQ order and fast delivery times, YIS Marine ensures that you can get the products you need quickly and without hassle. Contact YIS Marine today to learn more about this product. YIS Marine is a high-quality marines and boats Digital Voltage Sensitive Relay (DVSR) with Start Isolation, Digital Voltage Sensitive Relay (DVSR)-BF454 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.