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What Is a Maxi Fuse Holder, & What’s Its Role In Your 12V Setup?

When it comes to protecting your 12V gear and wiring, a maxi fuse holder is one of those small but mighty components that plays a critical role in keeping your setup safe. Whether you’re running a dual battery system, connecting a voltage-sensitive relay (VSR), or using a low voltage disconnect (LVD), incorporating a quality fuse holder can be the difference between smooth off-grid performance and a costly electrical issue.

What Is a Maxi Fuse Holder?

A maxi fuse holder is a heavy-duty inline fuse holder designed to house maxi blade fuses – large format fuses built to handle high current loads, typically up to 60A or more. These are ideal for protecting larger cables and high-draw accessories such as battery chargers, VSRs, LVDs, and power distribution setups.

Think of it as a safety buffer. If something goes wrong – say a short circuit or an overloaded cable – the fuse blows instead of your wiring melting or your gear getting damaged.

Why Is It Important?

When dealing with automotive or off-grid 12V systems, current draw can spike quickly, especially when starting fridges, inverters, or high-powered accessories. Without a fuse, a sudden surge could damage your devices, cause fires, or leave you stranded.

By placing a fuse holder close to your power source, you ensure that any excessive current is stopped in its tracks before it reaches your valuable gear.

The KickAss Inline Maxi Fuse Holder – Tough, Simple & Secure

Our KickAss Inline Maxi Fuse Holder with Anderson Plug is built specifically withstand the brutal heat, dust and salty air of Australian conditions:

  • Pre-wired with 8AWG cable for compatibility with most dual battery setups
  • Includes a waterproof cap to protect against dirt, dust and water
  • Anderson plug connection for fast, secure, and fuss-free installation
  • Compatible with VSRs, LVDs and more – simply add your fuse and plug in

It’s a simple yet powerful way to make your system safer and more reliable.

Works Perfectly With VSRs & LVDs

When used in bundles with our Voltage Sensitive Relays or Low Voltage Disconnects, the inline maxi fuse holder protects the main circuit connection, giving you peace of mind that your system is properly safeguarded.

For example:

  • Pair it with a VSR to protect the link between your start and auxiliary battery.
  • Use it with an LVD to safeguard your battery from damage due to deep discharge.

Final Thoughts

A maxi fuse holder may not be the flashiest part of your setup, but it’s essential. If you’re wiring up a 12V system, don’t overlook this small but crucial component. It’s your first line of defence against overcurrent, giving you a safer and longer-lasting power setup.

Shop the KickAss Inline Maxi Fuse Holder or check out our bundles with VSRs and LVDs. If you’re not sure what’s right for you, give us a call on 07 3123 4715, or drop into one of our retail stores. Our team of 12V experts will be happy to help.

FAQ

Where should I install a maxi fuse holder in my 12V setup?

The maxi fuse holder should be installed as close to the power source (e.g. battery or power distribution point) as possible. This ensures maximum protection for the wiring and devices downstream.

What size fuse should I use with the KickAss Maxi Fuse Holder?

The fuse size depends on the cable gauge and the device you're protecting. As a general rule, choose a fuse that’s rated slightly above the normal operating current of the connected device, but below the cable's maximum current rating.

Can I use this fuse holder with both VSRs and LVDs?

Yes – the KickAss Inline Maxi Fuse Holder is compatible with both Voltage Sensitive Relays and Low Voltage Disconnects. It's designed to protect the main circuit in dual battery and battery protection setups.