Battery Isolator Smart VSR 125 AMP Voltage Sensitive Relay

The Deck Tech Voltage Sensitive Relay (VSR) - 125A is an advanced automatic charging relay designed to manage dual battery systems efficiently.

This relay automatically combines two batteries when charging and isolates them when not in use, preventing unwanted battery drain.

With no voltage drop compared to battery isolator diodes, it ensures reliable power distribution.

The VSR features a robust glass fibre-reinforced nylon enclosure and is compatible with Heavy Duty Modular Fuse Box Series (BF43x) and BEP-style battery switches.

Features

• Automatic Battery Management: Combines and isolates two batteries based on charging status
• No Voltage Drop: Unlike traditional isolators, it ensures zero voltage loss (0.6V)
• LED Indication: Built-in LED for real-time VSR status (remote LED option available, not included)
• Flexible Mounting: Surface or panel mount options for easy installation
• Storage Mode: Zero power consumption when the engine is off, enhancing energy efficiency
• Robust Design: Glass fibre reinforced nylon enclosure for durability
• Wide Compatibility: Fits Heavy Duty Modular Fuse Box Series (BF43x) and mainstream battery switches

Specifications

• Nominal Voltage: 12V DC
• Combine Voltage: 13.3V DC
• Open Voltage: 12.8V DC
• Continuous Current Rating: 125A
• Intermittent Current Rating: 140A
• Power Consumption: 10mA (Standby), 330mA (Engage), 0mA (Storage Mode)
• Certification: IP67 (waterproof)

• Sizing and specs

  • Total height 57mm
  • Total width 69mm
  • Total length 69mm