Dual Battery Isolator - Voltage Sensitive Relay VSR (12V 125A) KT Cables KTVSR135

KT Cables KTVSR135 Dual Sensing Voltage Sensitive Relay (12V 125A)

The KT Cables KTVSR135 is a high-performance, dual-sensing Voltage Sensitive Relay (VSR) designed to intelligently manage dual-battery setups. It automatically connects your auxiliary battery for charging when voltage rises, and disconnects it when voltage falls—ensuring your starting battery is always protected.

Key Features

• Dual-Sensing VSR: Monitors both batteries and intelligently manages charging based on voltage.
• Protects Your Start Battery: Automatically disconnects auxiliary load when voltage drops too low.
• Fully Resin Sealed: Waterproof, vibration-resistant, and built for harsh automotive and marine environments.
• Optional Storage Mode: Zero power draw when engine is off.
• LED Status Indication: Built-in LED plus port for optional external LED (not included).
• Versatile Mounting: Surface or panel mount; hardware included.

Specifications

• Continuous Current Rating: 125A
• Maximum Current Rating: 140A
• Cut-In Voltage: 13.7V
• Cut-Out Voltage: 12.8V
• Model / Type: 12V Voltage Sensitive Relay (VSR)
• Enclosure: Glass fibre reinforced nylon, fully resin sealed
• Indicator: Built-in LED; port for external LED
• Country of Origin: China

Applications

• 4WD & Automotive Dual-Battery Systems
• Caravans & Camper Trailers
• RVs & Motorhomes
• Marine & Boats

Condition: Brand New in Box.

Includes mounting screws x 4, VSR Assembly. 
Does not include any lugs or dual battery wiring