Renogy MRBF Terminal Fuses
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Visit CalculatorThe Renogy MRBF Terminal Fuses provide compact, high-performance overcurrent protection for battery banks, solar energy systems, inverter installations, and other high-current DC applications. Designed to mount directly to battery terminals, MRBF (Marine Rated Battery Fuse) fuses help simplify system wiring while providing dependable circuit protection in a compact footprint. Available in a wide range of amperage ratings from 30A to 400A, these fuses are ideal for protecting batteries, inverters, combiners, and DC distribution systems in RV, marine, off-grid, and backup power applications.
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| Sepcification | Details |
| Current Rating | 30A/40A/60A/75A/100A/150A/200A/250A/300A/350A/400A |
| Voltage Rating | 58V |
| Interrupt Rating | 10,000A @ 14VDC / 5,000A @ 32VDC / 2,000A @ 58VDC |
| Dimension | 23.5*20*11.5 mm / 0.93*0.79*0.45 inch |
| Mounting Hole Size | 5/16'' / M8 |
| Insulating Body Material | Ceramic |
| Cover Material | PES |
Certifications
| RoHS; UL; CE |

What is an MRBF fuse?
MRBF stands for Marine Rated Battery Fuse. These fuses are designed to mount directly to battery terminals and provide overcurrent protection for high-current DC electrical systems.
What equipment can MRBF fuses protect?
MRBF fuses are commonly used to protect batteries, inverters, combiner boxes, DC distribution panels, and other high-current electrical equipment.
How do I choose the correct fuse rating?
The fuse size should be selected based on the maximum current requirements of the equipment and the manufacturer's installation recommendations.
Can these fuses be used without a Renogy 500A Combiner Box?
Yes. While they are designed to integrate seamlessly with the Renogy 500A Combiner Box, they can also be used in other compatible battery and DC power installations.
Are these fuses suitable for marine applications?
Yes. MRBF fuses are commonly used in marine electrical systems because of their compact size, terminal-mounted design, and reliable overcurrent protection.
What happens when the fuse blows?
When excessive current flows through the circuit, the fuse element opens, interrupting power and helping prevent damage to connected equipment.
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