Consumer Aftermarket
Consumer Aftermarket > Heavy Duty Fuses

Heavy Duty Fuses, Circuit Breakers and Accessories

Heavy duty circuit protection products to meet a variety of circuit protection or special mounting needs, including:
  • High amp fuses
  • Circuit breakers
  • Current limiters
  • Fuse links
  • Fuse blocks and holders

Heavy Duty Fuses and Accessories
AMG Heavy Duty FusesAMG Heavy Duty Fuses
Ratings from 100 to 300amp ratings, uses HMEG fuse block.
AMI Heavy Duty FusesAMI Heavy Duty Fuses
Ratings 50, 80 and 100 amps, uses HMID fuse block.
MRBF Battery FusesMRBF Battery Fuses

These fuses are suitable for main and auxiliary circuit protection (alternator outputs, starter motor inputs and accessories) in demanding environments or tight space constraints. Marine-rated under SAE J1117 for ignition protection. Available in ratings from 30 to 300 amps. Mounting bar and cover available (Part No. MRBF-MBC).

FMX Female MAXI FusesFMX Female MAXI Fuses

Developed to meet the growing OEM demand, the FMX Female Maxi fuse offers high amp protection in a compact package. FMX fuses are available in ratings from 20 to 60 amps.

Power Distribution Relay Module & Fuse BlockFMX Power Distribution Relay and Fuse Modules

The sealed Power Relay Module (PRM) and Power Fuse Module (PFM) are compact power distribution modules for high current applications having extreme moisture and high vibration.

  • The 24 volt PRM contains a 35A relay and two FMX* fuse positions (one protects the relay and the other provides a single-circuit in-line fuse).
  • The PFM has two FMX* fuse positions for separate circuits.

Both the PRM and PFM feature rugged M8 power input studs, and an IP66 removable, weather-tight cover to protect the fuse positions.

*FMX fuses sold separately. Electrical terminations not supplied by Cooper Bussmann.

Low-Profile FMX Female Maxi FusesLow-Profile FMX Female Maxi Fuses

Developed to meet the growing OEM demand for low-profile components, the FMX_LP Female Maxi fuse offers high amp protection in a compact package. FMX_LP fuses are available in ratings from 20 to 60 amps.

CB123-B Stud-Mount Circuit BreakersCB123-B Stud-Mount Circuit Breakers
24 Volt, Type III with 10-32 studs and crosswise bracket, Ratings 10, 15, 20, 30, 40 and 50 amps.
CB123HB Stud-Mount Circuit BreakersCB123HB Stud-Mount Circuit Breakers
Type III with 10-32 studs and lengthwise bracket, Ratings 10, 15, 20, 30, 40 and 50 amps.
CB124 Stud-Mount Circuit BreakersCB124 Stud-Mount Circuit Breakers
24 Volt, Type I with 10-32 studs and crosswise bracket, Ratings 15, 20, 30, 50 amps.
CBC Stud-Mount Circuit BreakersCBC Stud-Mount Circuit Breakers
12 Volt, Type I with 10-32 studs and brass-plated battery terminal, Ratings 8, 10, 15, 20, 25, 30, 35, 40 and 50 amps.
CBC-B Stud-Mount Circuit Breakers CBC-B Stud-Mount Circuit Breakers
12 Volt, Type I with 10-32 studs, brass-plated battery terminal and crosswise bracket, Ratings 8, 10, 15, 20, 25, 30, 35, 40 and 50 amps.
CBC-BWP Stud-Mount BreakersCBC-BWP Stud-Mount Breakers
Waterproof version of CBC-B, suitable for marine and trailer applications in 20, 25 and 30 amp versions only.
CBC-HB Stud-Mount Circuit BreakersCBC-HB Stud-Mount Circuit Breakers
12 Volt, Type I with 10-32 studs, brass-plated battery terminal and lengthwise bracket, Ratings 10, 15, 20, 25, 30, 40 and 50 amps.
CBD-B Stud-Mount Circuit BreakersCBD-B Stud-Mount Circuit Breakers
12 Volt, Type I with one 10-32 stud 0.56 battery and dual 1/4 quick-connect (auxiliary) terminals with crosswise bracket, Ratings 10, 15, 20 and 30 amps.
CBP-B Stud-Mount Circuit BreakersCBP-B Stud-Mount Circuit Breakers
12 Volt, Type I with 10-32 studs and lengthwise bracket, Ratings 10, 15, 20, 25, 30, 35, 40 and 50 amps.
CBP-BA Stud-Mount Circuit BreakersCBP-BA Stud-Mount Circuit Breakers
12 Volt, Type I with 10-32 studs and crosswise bracket, Ratings 10, 15, 20, 25, 30, 40 and 50 amps.
CB174 Panel-Mount Circuit BreakersCB174 Panel-Mount Circuit Breakers
32 Volt, Type III with 1/4 quick-connect terminals, Ratings 10, 15, 20 and 30 amps.
CB174B Panel-Mount Circuit BreakersCB174B Panel-Mount Circuit Breakers
32 Volt, Type III with right-angle #5-32 screw terminals, Ratings 10, 15, 20 and 30 amps.
CBT-M Quick-Connect Circuit Breakers CBT-M Quick-Connect Circuit Breakers

Type II for Mack Truck breaker blocks, ¼" blades on 1" centers, Ratings 10, 15, 20, 25 and 30 amps.

CBT-N Quick-Connect Circuit BreakersCBT-N Quick-Connect Circuit Breakers

Type II for Navistar Trucks, ¼" blades on 1.08" centers, Ratings 10, 15, 20, 25 and 30 amps.

CBU Quick-Connect Circuit BreakersCBU Quick-Connect Circuit Breakers
12 Volt, Type I with 1/4 quick-connect terminals on 0.99 centers, Ratings 6, 10, 15, 20 and 30 amps.
CBU-B Quick-Connect Circuit BreakersCBU-B Quick-Connect Circuit Breakers
12 Volt, Type I with 1/4 quick-connect terminals on 0.99 centers and crosswise bracket, Rating 30 amp only.
CB181F High Amp Circuit Breakers CB181F High Amp Circuit Breakers
Type 1 flush mount, Ratings 60, 70, 80, 90, 100, 110, 120, 135 and 150 amps.
CB184F High Amp Circuit BreakersCB184F High Amp Circuit Breakers
Type III flush mount, Ratings 60, 70, 80, 90, 100, 110, 120, 135 and 150 amps.
CB185 High Amp Circuit BreakersCB185 High Amp Circuit Breakers
Type III switchable flush mount, Ratings 50, 60, 70, 80, 90, 100, 110, 120, 135 and 150 amps.
CB185P High Amp Circuit BreakersCB185P High Amp Circuit Breakers
Type III switchable panel mount, Ratings 25, 40, 50, 60, 70, 80, 90, 100, 110, 120, 135 and 150 amps.
CB187 Marine-Rated Circuit BreakersCB187 Marine-Rated Circuit Breakers

CB187 Type III (manual reset) high amp circuit breakers. Specifically designed to meet the needs of marine applications, the CB187F and CB187P offer 5kA interrupting ratings and ignition protection per ABYC E-11. Usable as an ON/OFF switch (capable of withstanding 3000 on/off cycles @48Vdc), they have corrosion resistant plating on 5/16-18 copper terminals. Available in ratings from 25 to 150 amps.

  • CB187F Surface-Mount Version
  • CB187P Panel-Mount Version
ANN Current LimitersANN Current Limiters
Fast-acting limiter, ratings from 10 to 800 amps, uses SFR fuse holder.
ANL Current LimitersANL Current Limiters
Time-delay limiter, ratings from 35 to 750 amps, uses SFR fuse holder.
FLB Fusible LinksFLB Fusible Links
Bolts to fuse block, 13/16 bolt terminal, Ratings 30, 40, 50, 60, 70, 80, 100, 120 and 140 amps.
FLD Fusible LinksFLD Fusible Links
Bolts to fuse block, 9/16" bolt terminal, Ratings 30, 40, 50, 80 and 100 amps.
FLF Fusible LinksFLF Fusible Links
Female terminals, Ratings 20, 30, 40, 50 and 60 amps.
FLM Fusible LinksFLM Fusible Links
Male terminals, Ratings 30, 60, 80 and 60 amps.
FLN Fusible LinksFLN Fusible Links
Female terminals with locking tabs, Ratings 25 and 30 amps.
FLS Fusible LinksFLS Fusible Links
Female mini terminals, Ratings 30 and 40 amps.
BP/FL-14 Fusible Link WireBP/FL-14 Fusible Link Wire
Nine-inch length of 14 gauge universal fusible link wire with one each 3/8 and 5/16 ring terminals and crimp connector.
BP/FL-16 Fusible Link WireBP/FL-16 Fusible Link Wire
Nine-inch length of 16 gauge universal fusible link wire with one each 1/4" and 5/16" ring terminals and crimp connector.
BP-FLW-14 Fusible Link WireBP-FLW-14 Fusible Link Wire
Six-foot length of 14 gauge universal fusible link wire.
HMEG Fuse HolderHMEG Fuse Holder
For use with AMG fuses, stud terminals, accepts #2 to #8 wire size.
HMID Fuse BlockHMID Fuse Block
For use with AMI fuses, stud terminals, can be linked to form an assembly.
SFR HolderSFR Holder
For use with ANN and ANL current limiters, stud terminals.