What are MRBF fuses?

MRBF Terminal Fuse – 50A

• Requires the use of Terminal Fuse Blocks PN 5191 or PN 2151—do not mount the fuse directly to the battery terminal.
• Interrupt rating satisfies ABYC requirements for DC Main circuit protection on large battery banks.
• Ignition protected—safe for installation aboard gasoline powered boats.

What is MRBF?

Acronym. Definition. MRBF. Mean Rounds (Fired) Before Failure.

What is a battery fuse?

A fuse is a safety device that breaks an electric circuit if the current gets above safe levels. It is also referred to as sacrificial device, because it can perform this function only once. Some of the most common fuses that are presently used in electronics are 3A, 5A and 15A.

What kind of Fuse do you need for a MRBF?

The Blue Sea Marine Rated Battery Fuses are ideal for mounting directly to battery banks to busbars, or wherever you need a 30A to 300A fuse to protect a circuit (see images to your left). IMPORTANT: When using an MRBF on a battery bank that can be used to start a sailboat AUX engine, a 250A to 300A fuse is recommended as a bare minimum.

Why do we need Blue Sea fuse blocks?

Fuse blocks loaded with fuses protect the wire in electrical circuits. Blue Sea Systems broad selection of fuse blocks include single and consolidated fuse blocks. Their robust design makes them ideal for marine and vehicle AC & DC electrical systems.

What kind of battery fuse does Blue Sea use?

They make a lot more margin than we do.. The Blue Sea Marine Rated Battery Fuses are ideal for mounting directly to battery banks to busbars, or wherever you need a 30A to 300A fuse to protect a circuit (see images to your left).

Where can I find Blue Sea systems circuit Wizard?

Use the Blue Sea Systems Circuit Wizard to select the correct wire size, circuit breaker or fuse type and amperage, and fuse holder. Get Started > The Circuit Wizard app is available for Android™ devices& iOS devices. Panel Wizard