Eaton Bussmann MRBF-300 Marine Rated Battery Fuse, 300A 32V DC, Ignition Protected Space-Saving - Pack of 5

MRBF Series Marine Rated Battery Fuse - Eaton Bussmann Series

The Eaton Bussmann MRBF-300 is a high-capacity, space-saving circuit protection solution designed for demanding DC electrical systems. Specifically engineered for marine and heavy-vehicle environments, this Marine Rated Battery Fuse (MRBF) provides essential protection for large battery banks and high-load circuits. Its innovative design allows for high-current protection in a compact package, effectively eliminating the need for bulky fuse holders while minimizing the number of electrical connections. The MRBF-300 is ignition protected according to SAE J1171 standards, making it safe for installation in engine compartments and areas where explosive gases may be present.

Technical Specifications:

• Manufacturer: Eaton
• Brand: Bussmann series
• Catalog Number: MRBF-300
• Fuse Type: Marine Rated Battery Fuse (MRBF)
• Rated Current: 300 A
• Rated Voltage: 32V DC (Maximum 58V DC)
• Interrupting Rating: 5,000A @ 32V DC / 10,000A @ 14V DC
• Ignition Protection: SAE J1171
• Ingress Protection: IP66

Physical Characteristics:

• Mounting Interface: Optimized for M8 (5/16") studs
• Housing Material: High-visibility, transparent thermoplastic for rapid status identification
• Terminal Material: Tin-plated copper alloy for enhanced corrosion resistance in maritime environments
• Installation: Direct mount to battery terminals or terminal blocks

Application: The MRBF-300 is an industry-standard component for primary circuit protection in marine vessels, recreational vehicles (RVs), and heavy industrial mobile equipment. It is ideally suited for high-density power applications including large-scale inverters, DC-to-DC converters, windlasses, and main distribution panels where reliability and safety are critical.