Mouse Over to Zoom
Click to Enlarge

BLUE SEA SYSTEMSMRBF Marine-Rated Battery Terminal Fuses


In stock online.
Model # 9368978 | Mfg # 5183UPC # 632085051839
100A Terminal Fuse


4.9 Stars


Product Overview

An easy and economical solution for satisfying the ABYC 7" circuit protection rule. 

Terminal Fuse Blocks mount on 3/8" (M10) battery post, battery switch and busbar terminals. Appropriate for DC Main, inverter, windlass, and bow thruster circuit protection, providing high current protection in tight spaces. Weatherproof and suitable for open-cockpit boats. Insulating nut and cap. M8 (5/16") terminal stud. Compact, Terminal Fuses are ignition protected and meet ABYC requirements for DC Main circuit protection on large battery banks. Clear window for visual indication of blown fuse and color-coded for each amperage. Terminal Fuses must be used with Terminal Fuse Blocks 5191 or 2151.  


  • Approvals: IP66 Dust tight, water protection from heavy seas or water projected from powerful jets, Meets SAE J1171 Marine ignition protection 
  • Maximum Voltage: 58V DC
  • Interrupt Capacity (The fault current that a device, normally a fuse or circuit breaker is capable of breaking without damage): 10000A @ 14V DC, 5000A @ 32V DC, 2000A @ 58V DC
  • Hole Diameter: 5/16" (8.25mm)
  • Weight: 0.06lb (0.03 kg)
  • MRBF Fuses

Dimensional Drawing

 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.


The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Related West Advisor Articles


Product Q & A