Eaton Bussmann MRBF-500 Marine Rated Battery Fuse, 500A 32V DC, Ignition Protected Ultra High-Current - Pack of 5

MRBF Series Marine Rated Battery Fuse - Eaton Bussmann Series

The Eaton Bussmann MRBF-500 is an ultra-high-current Marine Rated Battery Fuse designed to provide superior circuit protection for the most demanding DC electrical architectures. Engineered as a compact, high-capacity solution, this fuse is capable of handling a continuous 500 Amp load, making it one of the highest-rated fuses in the MRBF product line. It is specifically designed to eliminate the need for independent fuse blocks by mounting directly to battery terminals or power distribution bars. The MRBF-500 is ignition-protected as per SAE J1171, ensuring safe operation in environments containing potentially explosive fumes, such as gasoline engine compartments or battery storage areas.

Technical Specifications:

• Manufacturer: Eaton
• Brand: Bussmann series
• Catalog Number: MRBF-500
• Fuse Type: Marine Rated Battery Fuse (MRBF)
• Rated Current: 500 A
• Maximum Voltage Rating: 32V DC
• Interrupting Rating: 5,000A @ 32V DC / 10,000A @ 14V DC
• Compliance: SAE J1171 (Ignition Protected), ABYC Standards
• Ingress Protection: IP66

Physical Characteristics:

• Mounting Interface: M8 (5/16") stud mounting hole
• Housing: Clear thermoplastic material for immediate visual blown-fuse indication
• Terminal Construction: High-grade tin-plated copper alloy for optimized current flow and corrosion prevention
• Compact Design: Designed for high-density power distribution systems

Application: The MRBF-500 is the industry standard for high-output power protection in marine, emergency vehicle, and off-grid solar sectors. It is ideally suited for protecting massive lithium battery banks (LiFePO4), ultra-high-output inverters (5000W+), hydraulic thruster systems, and heavy-duty winch installations where maximum current delivery and fail-safe protection are essential.