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)
14.92 I 13.00 I 12.00
1 EA
78991 MRBF Terminal Fuse Block, 2 Fuse, 300A Max (1 MIN)
13.79 I 11.73 I 10.50
1 EA
78992 MRBF Red Santoprene Cover for Single Stud Holder (1 MIN)
1.71 I 1.39 I 1.16
1 EA
78993 MRBF Red Santoprene Cover for Double Stud Holder (1 MIN)
1.74 I 1.34 I 1.10
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 MRBF Surface Mount Fuse Block, Independent Source (BSS 5194) (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 MRBF Surface Mount Fuse Block, Common Source (BSS 5196) (1 MIN) 59.99 1 EA
Prop65 Warning