12V 140A Dual Battery Isolator Kit with Wiring Cables

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SKU MB3880

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Adding a second battery in your vehicle or boat enables you to power your electrics without flattening your main starter battery when the engine is off. Applications include, for example, 4WD’s with a 12V fridge/freezer, a boat with bright cabin lighting, or say a tradesperson’s van or ute with an inverter powering various power tools. This Voltage Sensitive Relay (VSR) kit provides everything you need to wire up your second battery, while handling the isolation during shut-off periods. It is provided with marine-grade hardware so it can be used on a boat or vehicle. Suitable for 12V systems with a continuous rating of 140A. All wiring hardware and instructions included. 
Note: additional black (negative) wire may be required for systems without chassis earth, such as fibreglass boats, depending on your installation.
- Automatic isolation
- Priority charging for Starter Battery
- Easy to install
Voltage rating: 12VDC
Current rating: 140A
Cut-in voltage: 13.3V
Cut-off voltage: 12.8V
IP Rating: IP65


IP Rating IP65
Dust/Particle Ingress Protection 6 - Dust tight, no ingress of dust
Liquid/Moisture Ingress Protection 5 - Water jets

Cable length 5m

Length 670mm
Width 535mm
Height 80mm
Weight 1.6kg