Mega Fuses & Holders

Mega fuses and holders for high-current wiring in vehicles, dual-battery systems, inverters, split-charge setups and car audio. The fuse and holder are used together, and this guide explains how to choose them.

Mega fuses — A mega fuse is a bolt-down blade fuse designed for the high currents found on main battery and charging circuits, where a standard blade fuse would be undersized. It bolts directly into the holder for a secure, low-resistance connection. The correct rating is set by the cable and circuit it protects, so match the fuse to the wiring rather than the load alone. Confirm the amperage you need before ordering.

Mega fuse holders — The holder is the insulated base the fuse bolts into, giving a tidy, protected mounting point close to the battery. Choose a holder that matches your mega fuse and cable size, and mount it where it can be inspected and the fuse changed easily.

Choosing the pair — Order the holder and fuse together so the terminals and stud size match. The holder positions and protects the fuse, and the fuse protects the circuit — sized correctly, the pair guards high-current wiring against faults and overload.

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