Blue Sea Systems 5191 MRBF terminal fuse block, 30-300A
MRBF block dimensioned drawing — Blue Sea Systems 5191
MRBF block mounting diagram — Blue Sea Systems 5191
Blue Sea Systems 5191 MRBF terminal fuse block, 30-300A
MRBF block dimensioned drawing — Blue Sea Systems 5191
MRBF block mounting diagram — Blue Sea Systems 5191

MRBF Terminal Fuse Block (Spare)

£24.99

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Spare part — Blue Sea 5191 MRBF Terminal Fuse Block

Buying a fresh install? The MRBF Fuse Kit is better value (block + 300A fuse for £36.99 inc VAT).

About this part

Blue Sea Systems isolated-stud terminal fuse block. Mounts on an M8 battery terminal, accepts any MRBF (Marine Rated Battery Fuse) up to 300A, and provides a clean place to land 5/16" ring terminals or stacked cable lugs.

  • Compatible with all Blue Sea MRBF fuses (30A–300A)
  • Insulating cap prevents accidental shorts
  • Ignition-protected when paired with an MRBF fuse
  • Isolated stud design — uses standard M8 hardware

Specifications

Maximum amperage 300A
Maximum voltage 58V DC
Terminal stud M8 (5/16")
Maximum torque 8.47 Nm (75 in-lb)
Weight 0.07 kg
Manufacturer Blue Sea Systems (PN 5191)

Technical reference

Drawings & curves sourced from Blue Sea Systems product documentation.

MRBF block dimensioned drawing — Blue Sea Systems 5191
Dimensioned drawing — Blue Sea 5191
MRBF block mounting diagram — Blue Sea Systems 5191
Mounting diagram — Blue Sea 5191