Battery Isolation & Selector Switches

12V Battery Isolator Switches & DC Circuit Protection

A robust power system requires precise control and reliable safety mechanisms. Whether you are building an off-grid tiny home, upgrading a caravan electrical system, or fitting out a marine vessel, having the right isolation switch is critical. Our comprehensive range covers everything from 12V battery isolator switches and marine selector switches to heavy-duty DC circuit breakers. These components allow you to safely disconnect power for maintenance, manage dual battery setups, and protect your expensive equipment from electrical faults.

Battery Isolation & Selector Switches

An effective battery isolation switch gives you a physical disconnect point between your battery bank and your loads. For boats and 4WD setups, marine-grade options from Blue Sea Systems and Exotronic provide exceptional durability in harsh environments. If you need to manage multiple battery banks, a battery selector switch allows you to seamlessly shift power between battery one, battery two, or combine both for emergency starts. We also stock Victron components for seamless integration into advanced off-grid configurations.

Waterproof DC Circuit Breakers & Solar Isolators

Alongside physical disconnects, overcurrent protection is vital. Our selection includes Exotronic surface mount and mini panel mount waterproof DC circuit breakers, ranging from 10A up to 250A. These units double as a highly reliable DC isolator switch, allowing you to manually trip the circuit when needed while offering automatic protection against overloads. For solar arrays, we supply Noark non-polarised DC solar circuit breakers and ZJBeny enclosed breakers, ensuring your PV input is safely managed and isolated before reaching your solar charge controller.

Transfer Switches for Seamless Power

When running multiple power sources, such as shore power and an inverter, an automatic transfer switch prevents dangerous power collisions. The Victron Filax 2 and high-capacity Victron automatic transfer switches ensure a smooth transition between grid and off-grid power, keeping your essential 240V appliances running safely.

Installation or setup considerations

When selecting and installing switches and breakers for your 12V, 24V, or 48V system, proper planning ensures long-term safety and performance:

• Match your continuous load: Ensure your battery isolator switch is rated higher than the maximum continuous current your system will draw, including inverter surges.
• Ignition protection: For marine vessels and enclosed compartments, select marine battery switches that are ignition protected to safely operate near potentially flammable gas environments.
• Correct placement: Install your master battery isolation switch as close to the positive battery terminal as practically possible, using appropriately sized cable lugs to minimise voltage drop.
• Fuse coordination: A circuit breaker or switch should work in tandem with correctly rated fuses and fuse holders to protect the cable from catastrophic short circuits.
• Environmental protection: Use waterproof DC circuit breakers in exposed 4WD canopies or wet marine environments to prevent premature corrosion.

High-Quality Components for Off-Grid Confidence

Backed by a decade of experience, our Australian family business is dedicated to supplying high-quality products for your mobile power needs. We provide extensive before and after support to ensure you get the right component for your specific application. Secure your electrical system with our premium battery selector switches and solar isolator switch options today, and enjoy fast dispatch straight to your door.