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Victron Energy MEGA fuse 40A-500A black 12V 24V (32V max)
Victron Energy MEGA fuses are high-current bolt-down fuses, from 40A up to 500A, used to protect the main battery cables of 12V and 24V systems. They are the standard link between battery bank, inverter and distribution busbars.
Key strengths
It protects the cable, not the load
A fuse is always sized on the cross-section of the cable it protects: it trips before the conductor reaches a dangerous temperature during a short circuit.
Bolt-down mounting
Direct screw contact on the busbar or fuse holder: no springs, no sliding contacts, minimal contact resistance even at high currents.
High breaking capacity
Designed for the short-circuit values typical of lithium and lead-acid battery banks, where fault currents quickly exceed several thousand amps.
Pack of 5 pieces
Victron supplies these fuses in packs of 5. On our site you can choose either a single piece or the full pack, at the Victron list price.
How to pick the rating
A MEGA fuse belongs on the main positive cable, as close to the battery as possible.
- Work out the maximum continuous current the cable will carry
- Pick a fuse rated above the working current but below the cable's capacity
- Check the fuse voltage rating suits the system: a 32V fuse must not be used on a 48V installation
- Always fit the fuse as close as possible to the battery positive terminal