12V 140A Automatic Dual Battery Isolator Voltage Sensitive Relay Kit

Dirt Racing 12V 140A Automatic Dual Battery Isolator, Voltage Sensitive Relay Kit

A 12V 140A automatic dual battery isolator kit fromDirt Racing, using a voltage sensitive relay to manage charge sharing between a vehicle's starter battery and a separate auxiliary or leisure battery. It monitors system voltage, connects both batteries automatically when a charging source is present and separates them when voltage drops, so the alternator can charge the auxiliary battery with less risk of connected accessories discharging the starter battery.

Key Features

• Automatic linking of starter and auxiliary batteries during charging
• Automatic isolation when charging stops
• Dual-sensing operation when either connected battery is receiving charge
• Primary-battery-priority charging operation
• Helps prevent auxiliary loads from draining the starter battery
• No manual switching required
• LED status indication
• Surge protection for connected electronics
• Compact format for vehicle and leisure battery installations
• Intended for suitable 12V charging systems, with correct cable sizing and circuit protection
• Check suitability for smart or variable-voltage alternators and lithium battery systems before installation

Specifications

• System voltage: 12V DC
• Continuous current rating: 140A
• Intermittent current capacity: 170A
• Cut-in voltage: Approximately 13.3V
• Cut-out voltage: Approximately 12.8V
• Switching delay: Approximately 5 seconds
• Operating temperature range: -30°C to +105°C
• Ingress protection rating: IP65
• Control type: MCU-controlled voltage sensitive relay
• Dimensions: Approximately 67.5 x 67.5 x 53.5mm
• Weight: Approximately 200g