The Alvolta 300A Battery Terminal Fuse (MRBF) is the top of the MRBF range — an ignition-protected, marine-rated battery fuse that bolts directly to the positive battery terminal and protects the heaviest cable in your system from the very first millimetre.
Features
- 300A rating — the maximum for the MRBF terminal fuse platform
- Ignition protected — safe for battery compartments and engine bays
- Suitable for systems up to 58V DC (12V, 24V and 48V)
- Secure bolt-in connection, no crimping required
- Corrosion-resistant connector blades for marine and coastal use
- Blown-fuse indicator window for instant visual diagnosis
- Colour-coded by amperage so the rating is obvious at a glance
- Compact footprint — fits tight battery boxes and under-bonnet installs
Where to use it
MRBF terminal fuses connect as close as possible to the positive terminal of a battery, protecting the wiring from overcurrent and short circuits. A 300A rating is used on large inverter feeds, big lithium house banks, main battery-to-busbar links and heavy marine installations. It is typically paired with cable in the 70mm² range — always size the fuse to protect the cable, not the load.
- SKU: ALV-BTF300
- Rating: 300A
- Max voltage: 58V DC
- Dimensions: 27.8mm (L) x 23mm (W) x 16.3mm (D)
- Weight: 0.09kg
- Certification: SAE J1171 (ignition protected)
- Applications: Marine, RVs, caravans, off-grid systems, tiny houses, cabins
Pairs well with
The Alvolta Single or Dual Battery Terminal Fuse Holder (MRBF) — a holder is required to mount this fuse.
Alvolta is Australian-owned and operated, building precision-engineered 12V and 24V DC components made to handle harsh Australian conditions. Available now from Townsville Wholesale Batteries — in stock in Townsville with fast delivery Australia-wide.