Fuses-&-Fuse-Accessories > Fuse-Holders-&-Fuse-Adapters

Marine Rated Battery Fuse Blocks - 58V DC, 300 Amp

Our weatherproof terminal fuse blocks can withstand many harsh environment conditions. The red santoprene covers, also known as insulating caps, prevent accidental shorts.


  • Voltage Max: 58VDC. Amperage Max: 300A.
  • Housing & Cover: UL-rated 94V0 Thermoplastic.
  • Ring Terminals: Tin Plated.
  • Terminal Stud Size: M8.
  • Mounting Hole: 3/8".
  • SAE J1171 ignition protected.
  • Fuses sold separately; use with fuse parts 78976 to 78989.
  • Hardware not included.
Item Description Price
1+ I 20+ I 50+
Qty in
Package
In Stock Add to Cart
78990 MRBF Terminal Fuse Block, 1 Fuse, 300A Max. (1 MIN)
15.67 I 13.65 I 12.60
1 EA
78991 MRBF Terminal Fuse Block, 2 Fuse, 300A Max (1 MIN)
14.48 I 12.32 I 11.03
1 EA
78992 MRBF Red Santoprene Cover for Single Stud Holder (1 MIN)
1.80 I 1.46 I 1.22
1 EA
78993 MRBF Red Santoprene Cover for Double Stud Holder (1 MIN)
1.83 I 1.41 I 1.16
1 EA

Blue Sea Systems Marine Rated Battery Fuse Blocks - Independent Source

This Blue Sea Systems marine rated surface mount fuse block accommodates three MRBF fuses for consolidated high amperage circuit protection. The independent source fuse block is ideal for 3 output battery chargers. The clip-on cover insulates terminal connections. Versatile wiring options allow all wires to come out a single side. Label recesses provide easy circuit identification. One-piece stainless flange nuts ensure safe and secure connections. Ignition protected when used with MRBF fuses.


  • Voltage Max. Operating: 58V DC
  • Amperage Max. Operating: 240A per Circuit
  • Terminal Stud Size: M8: 5/16"-18
  • Surface Mount M5 (#10)
  • Marine rated battery fuses sold separately.
  • Meets SAE J1171 external ignition protection requirements.
Item Description Price Qty in
Package
In Stock Add to Cart
78921 Blue Sea Systems 5194, MRBF Surface Mount Fuse Block, Independent Source, 5/16"-18 Studs, 240 Amp (1 MIN) 59.99 1 EA

Blue Sea Systems Marine Rated Battery Fuse Blocks - Common Source

This Blue Sea Systems marine rated surface mount fuse block accommodates three MRBF fuses for consolidated high amperage circuit protection. The common source fuse block provides 3 loads from a single source. The clip-on cover insulates terminal connections. Versatile wiring options allow all wires to come out a single side. Label recesses provide easy circuit identification. One-piece stainless flange nuts ensure safe and secure connections. Ignition protected when used with MRBF fuses.


  • Voltage Max. Operating: 58V DC
  • Amperage Max. Operating: 240A per Circuit
  • Terminal Stud Size: M8: 5/16"-18
  • Surface Mount M5 (#10)
  • Marine rated battery fuses sold separately.
  • Meets SAE J1171 external ignition protection requirements.
Item Description Price Qty in
Package
In Stock Add to Cart
78922 Blue Sea Systems 5196, MRBF Surface Mount Fuse Block, Common Source, 5/16"-18 Studs, 240 Amp (1 MIN) 59.99 1 EA
Prop65 Warning