These fuse blocks attach right to your 3/8″ threaded rod or threaded insert battery post, and accept connections (on top of the fuse) with a 5/16″ lug. Fuses are not included.
There are a number of reasons to use these fuse holders:
- This is the most compact way to mount an MRBF fuse, as long as you have an extra inch above your battery posts
- They alleviate the hassle of having to make up a short wire to connect a standard fuse block to the battery
- They make it very easy to comply with the ABYC rule requiring unsheathed wires to have a fuse or breaker within 7″ of the battery post
Reasons not to use these fuse blocks include:
- They handle a maximum of 300A per fuseblock – do not install two 300A fuses on a dual MRBF holder!
- Replacement fuses are not as common as ANL or Class T fuses
- MRBF fuses are more expensive than ANL fuses, but less expensive than Class T fuses
Features:
- Compact, high-amp fuse—appropriate for DC Main, inverter, windlass, and bow thruster circuit protection
- Provides high current protection in tight space constraints
- Ignition protected when used with Blue Sea Systems or Bussmann MRBF Terminal Fuse
- Isolated stud design uses standard M8 hardware and permits stacking of terminals
- Insulating cap prevents accidental shorts
- Bolts to 3/8″ threaded rod or terminal insert of battery
- Accepts 5/16″ ring terminals on top of fuse
- Fuse sold separately
- 75 in-lb (8.47 Nm) maximum torque on fuse side; refer to your battery manufacturer’s recommendations for maximum torque on battery side
