Blue Sea Terminal MRBF Fuse Block 1 Stud (5191)

Ideal for demanding DC applications, the Compact High-Amp Terminal Fuse Block offers a space-saving solution for protecting circuits such as DC mains, inverters, windlasses, and bow thrusters. This fuse block supports a maximum current of 300A and a voltage rating of up to 58V DC, making it suitable for a wide range of marine, automotive, and off-grid systems.

Built to work in conjunction with Blue Sea Systems’ MRBF Terminal Fuses (sold separately), the unit provides ignition protection and high performance even in tight installations. The isolated stud design accommodates standard M8 (5/16") hardware, allowing you to stack terminals safely. An insulating cap is included to prevent accidental short circuits and ensure safe handling.

With available fuse ratings of 60A, 100A, 200A, and 300A, and an optional terminal cover pack, this fuse block can be customised to suit a variety of installation needs.

Key Features

• High-amp fuse block suitable for DC main, inverter, bow thruster, and windlass circuits
• Provides up to 300A protection at 58V DC
• Space-saving design ideal for compact installations
• Isolated stud design accepts standard M8 (5/16") hardware and allows terminal stacking
• Compatible with Blue Sea Systems MRBF Terminal Fuses (sold separately)
• Insulating cap included to prevent accidental shorts
• Optional terminal cover pack for enhanced safety
• Available in 60A, 100A, 200A, and 300A fuse ratings

Specifications

• Maximum Amperage: 300A
• Maximum Voltage: 58V DC
• Terminal Stud: M8 (5/16")
• Maximum Torque: 75 in-lb (8.47 Nm)
• Weight: 0.16lb (0.07 kg)
• Fuse Ratings Available: 60A, 100A, 200A, 300A
• Ignition Protected: No (unless used with MRBF fuse)
• Compatible Fuse Type: MRBF Terminal Fuse (sold separately)
• Terminal Cover Pack: Yes / No (optional)
• Mounting: 3/8" terminal studs