Marine Fuses & Circuit Breakers

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(129 Results)

Blue Sea Systems Fuse Block StBlue Sea Systemsde 12Circ W/Gnd/Cvr Blue Sea Systems Fuse Block StBlue Sea Systemsde 12Circ W/Gnd/Cvr BLA-BS-5026

$123.41 $129.90

$6.49 off RRP of $129.90

Fuse Block ST Blade 12 Circuit W/GND/CVR Fuse Block ST Blade 12 Circuit W/GND/CVR BLA-BS-5026B

$104.41 $109.90

$5.49 off RRP of $109.90

Blue Sea Systems Fuse Block StBlue Sea Systemsde 6Circ W/Cvr Blue Sea Systems Fuse Block StBlue Sea Systemsde 6Circ W/Cvr BLA-BS-5028

$82.56 $86.90

$4.34 off RRP of $86.90

Blue Sea Systems Fuse Block StBlue Sea Systemsde 12Circ W/Cvr Blue Sea Systems Fuse Block StBlue Sea Systemsde 12Circ W/Cvr BLA-BS-5029

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Fuse Bl StBlue Sea Systemsde 6Circ Independent W/Cvr Blue Sea Systems Fuse Bl StBlue Sea Systemsde 6Circ Independent W/Cvr BLA-BS-5035

$82.56 $86.90

$4.34 off RRP of $86.90

Blue Sea Systems Fuse Block StBlue Sea Systemsde Compact 8Circ W/Cvr Blue Sea Systems Fuse Block StBlue Sea Systemsde Compact 8Circ W/Cvr BLA-BS-5046

$104.41 $109.90

$5.49 off RRP of $109.90

Blue Sea Systems Circuit Breaker Push Button Qc 3A Blue Sea Systems Circuit Breaker Push Button Qc 3A BLA-BS-7050

$16.90

Blue Sea Systems Circuit Breaker Push Button Qc 5A Blue Sea Systems Circuit Breaker Push Button Qc 5A BLA-BS-7052

$16.90

Blue Sea Systems CLB Ciscuit Breaker Push Button 7A Blue Sea Systems CLB Ciscuit Breaker Push Button 7A BLA-BS-7053

$16.90

Blue Sea Systems Circuit Breaker Push Button Qc 10A Blue Sea Systems Circuit Breaker Push Button Qc 10A BLA-BS-7054

$16.90

Blue Sea Systems Circuit Breaker Push Button QC 20A Blue Sea Systems Circuit Breaker Push Button QC 20A BLA-BS-7057

$16.90

Blue Sea Systems Circuit Breaker Push Button Quick Connect 25A Blue Sea Systems Circuit Breaker Push Button Quick Connect 25A BLA-BS-7058

$16.90

Blue Sea Systems Circuit Breaker Push Button Qc 30A Blue Sea Systems Circuit Breaker Push Button Qc 30A BLA-BS-7059

$16.90

Blue Sea Systems Circuit Breaker, Bus 285 Panel 80 A Blue Sea Systems Circuit Breaker, Bus 285 Panel 80 A BLA-BS-7086

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Panel 100 A Blue Sea Systems Circuit Breaker, Bus 285 Panel 100 A BLA-BS-7087

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Panel 150 A Blue Sea Systems Circuit Breaker, Bus 285 Panel 150 A BLA-BS-7089

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker 187 Sfcmt 150A Blue Sea Systems Circuit Breaker 187 Sfcmt 150A BLA-BS-7148

$170.91 $179.90

$8.99 off RRP of $179.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 30 A Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 30 A BLA-BS-7181

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 40 A BS-7182 Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 40 A BS-7182 BLA-BS-7182

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 40 A BS-7182B Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 40 A BS-7182B BLA-BS-7182B

$92.06 $96.90

$4.84 off RRP of $96.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 50 A BS-7183 Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 50 A BS-7183 BLA-BS-7183

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 50 A BS-7183B Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 50 A BS-7183B BLA-BS-7183B

$92.06 $96.90

$4.84 off RRP of $96.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 60 A BS-7184 Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 60 A BS-7184 BLA-BS-7184

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 60 A BS-7184B Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 60 A BS-7184B BLA-BS-7184B

$92.06 $96.90

$4.84 off RRP of $96.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 70 A Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 70 A BLA-BS-7185

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 80 A BS-7186 Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 80 A BS-7186 BLA-BS-7186

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 80 A BS-7186B Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 80 A BS-7186B BLA-BS-7186B

$92.06 $96.90

$4.84 off RRP of $96.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 100 A BS-7187 Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 100 A BS-7187 BLA-BS-7187

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 100 A BS-7187B Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 100 A BS-7187B BLA-BS-7187B

$92.06 $96.90

$4.84 off RRP of $96.90

Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 150 A Blue Sea Systems Circuit Breaker, Bus 285 Sfcmt 150 A BLA-BS-7189

$113.91 $119.90

$5.99 off RRP of $119.90

Blue Sea Systems Circuit Breaker Aa1Toggle 30A Wht Blue Sea Systems Circuit Breaker Aa1Toggle 30A Wht BLA-BS-7222

$50.26

Lewmar Circuit Breaker Panel Mnt 50A Lewmar Circuit Breaker Panel Mnt 50A BLA-154512

$322.91 $339.90

$16.99 off RRP of $339.90

Marine fuses and circuit breakers are used as part of boat electrical protection systems, matched to circuit wiring, equipment loads and system design rather than chosen by appearance alone. They help protect cables and equipment when selected and installed correctly as part of a complete circuit plan. This category supports wiring projects, accessory installations and spare-parts planning, but should not be used as a substitute for proper electrical design. Check product specifications carefully, match protection ratings to the circuit, and use a qualified installer where electrical safety is uncertain or the system is complex.

Matching Protection to the Circuit

Fuses and circuit breakers should be chosen around the circuit, not just the accessory being added. The protection rating must suit the cable size, current load and installation position a fuse rated too high for the cable provides little practical protection. Review connected loads, wire gauge and the protection style required before purchasing. Broader marine electrical equipment can help when planning batteries, panels, wire and switching together as a complete system.

Fuse Holders, Panels and Breakers

Protection products should be considered alongside marine electrical wire, suitable marine switch panels and the battery supply. Circuit breakers offer reset capability where panel integration or remote reset may be useful, while blade and ANL fuses suit in-line or battery-adjacent protection. If a system uses distribution panels, related marine batteries and their connection hardware may also be relevant. Always confirm ratings and follow manufacturer guidance before purchase, replacement or installation of any protection component.

For electrical changes involving new circuits, breaker panels or battery connections, use a qualified installer where required. Do not assume that replacing a blown fuse with a higher-rated one solves the underlying fault the cause should always be identified first.

Marine Fuses & Circuit Breakers FAQ

What are marine fuses and circuit breakers used for?

They protect boat electrical circuits powering lights, pumps, electronics and accessories when matched correctly to the cable size and connected load as part of a complete circuit design.

How do I choose the right fuse rating?

The rating depends on circuit design, cable size and connected load not just the accessory. A fuse rated too high for the cable provides inadequate protection. Check product specifications and follow manufacturer guidance.

When would I use a circuit breaker instead of a fuse?

A circuit breaker may be chosen where reset capability or panel integration is needed. Check that the breaker rating, mounting style and product specifications match the system design.

Do I need spare marine fuses on board?

Carrying matching spare fuses can be practical. Do not substitute with different-rated fuses as a temporary fix identify the cause of the original fault before replacement.

Should circuit protection be installed by a qualified person?

A qualified installer is recommended where circuit design, ratings or battery connections are uncertain. Follow manufacturer instructions for any protection component.