Circuit Protection
Protect electrical circuits with coast guard- and military-approved circuit breakers, fuses, fuse holders, and accessories. Explore reliable options for marine AC and DC systems, including Carling breakers for equipment, distribution panels, and applications requiring UL 489 listed branch circuit protection.
324 products
Subcategories
Blue Sea SystemsBlue Sea Systems ANL Fuse 40A 80V DC
40A ANL fuse for main DC circuit protection, 80V DC maximum, 6,000A interrupt capacity. Use with a Blue Sea ANL Fuse Block (sold separately).
SKU BLUE-5165
$30.10MSRP $36.12
Blue Sea SystemsBlue Sea Systems ANL Fuse 500A 80V DC
500A ANL fuse for main DC circuit protection, 80V DC maximum, 6,000A interrupt capacity. Use with a Blue Sea ANL Fuse Block (sold separately).
SKU BLUE-5137
$35.00MSRP $42.00
Blue Sea SystemsBlue Sea Systems ANL Fuse 50A 80V DC
50A ANL fuse for main DC circuit protection, 80V DC maximum, 6,000A interrupt capacity. Use with a Blue Sea ANL Fuse Block (sold separately).
SKU BLUE-5122
$30.10MSRP $36.12
Blue Sea SystemsBlue Sea Systems ANL Fuse 60A 80V DC
60A ANL fuse for main DC circuit protection, 80V DC maximum, 6,000A interrupt capacity. Use with a Blue Sea ANL Fuse Block (sold separately).
SKU BLUE-5123
$30.10MSRP $36.12
Blue Sea SystemsBlue Sea Systems ANL Fuse 750A 80V DC
750A ANL fuse for main DC circuit protection, 80V DC maximum, 6,000A interrupt capacity. Use with a Blue Sea ANL Fuse Block (sold separately).
SKU BLUE-5163
$45.50MSRP $54.60
Blue Sea SystemsBlue Sea Systems ANL Fuse Block with Cover 35-300A
ANL fuse block with insulating cover, 32V DC max, accepts 5/16in ring terminals for wire up to 2/0 AWG. Swing-out cover. Fuse sold separately.
SKU BLUE-5005
$29.40MSRP $35.28
Blue Sea SystemsBlue Sea Systems ANL Fuse Block with Insulating Cover - 35 to 750A
ANL Fuse Block with Insulating Cover - 35 to 750A. Cover included. Accepts 5/16" (M8) ring terminals.
SKU BLUE-5503
$48.30MSRP $57.96
Blue Sea SystemsBlue Sea Systems Class T Fuse - 400 Amp
Class T Fuse - 400 Amp. Extremely fast short-circuit response. 20,000 Ampere Interrupt Capacity (AIC).
SKU BLUE-5121
$74.20MSRP $89.04
Blue Sea SystemsBlue Sea Systems Class T Fuse 125A 125V DC
125A Class T fuse, 125V DC max, with a 20,000A interrupt rating for inverter and large lithium battery bank protection. Use with a Class T Fuse Block, sold separately.
SKU BLUE-5113
$58.10MSRP $69.72
Blue Sea SystemsBlue Sea Systems Class T Fuse 250A 125V DC
250A Class T fuse, 125V DC max, with a 20,000A interrupt rating for inverter and large lithium battery bank protection. Use with a Class T Fuse Block, sold separately.
SKU BLUE-5118
$74.20MSRP $89.04
Blue Sea SystemsBlue Sea Systems Class T Fuse 300A 125V DC
300A Class T fuse, 125V DC max, with a 20,000A interrupt rating for inverter and large lithium battery bank protection. Use with a Class T Fuse Block, sold separately.
SKU BLUE-5119
$74.20MSRP $89.04
Blue Sea SystemsBlue Sea Systems Class T Fuse 350A 125V DC
350A Class T fuse, 125V DC max, with a 20,000A interrupt rating for inverter and large lithium battery bank protection. Use with a Class T Fuse Block, sold separately.
SKU BLUE-5120
$74.20MSRP $89.04
Blue Sea SystemsBlue Sea Systems Class T Fuse Block 225-400A
Class T fuse block with clear insulating cover, 400A / 160V DC max, 4/0 AWG cable capacity. Not ignition protected. Class T fuse sold separately.
SKU BLUE-5502
$48.30MSRP $57.96
Blue Sea SystemsBlue Sea Systems Class T Fuse Block Ignition Protected 110-200A
Ignition-protected Class T fuse block for 110-200A Class T fuses, 160V DC max, 4/0 AWG cable capacity. SAE J1171 / ISO 8846. Fuse sold separately.
SKU BLUE-5007100
$70.00MSRP $84.00
Blue Sea SystemsBlue Sea Systems Dual MRBF Terminal Fuse Block 30-300A
Two-position MRBF fuse block, 300A / 58V DC max per position. Mounts on a single 3/8in terminal stud. MRBF fuses sold separately, one per position.
SKU BLUE-2151
$39.20MSRP $47.04
Blue Sea SystemsBlue Sea Systems Fuse A3T / Class T 150 Amp
Fuse A3T / Class T 150 Amp. Extremely fast short-circuit response. 20,000 Ampere Interrupt Capacity (AIC).
SKU BLUE-5114
$58.10MSRP $69.72
Blue Sea SystemsBlue Sea Systems Fuse A3T / Class T 200 Amp
Fuse A3T / Class T 200 Amp. Extremely fast short-circuit response. 20,000 Ampere Interrupt Capacity (AIC).
SKU BLUE-200A
$58.10MSRP $69.72
Blue Sea SystemsBlue Sea Systems MAXI Fuse Block Ignition Protected 80A
Ignition-protected MAXI fuse block, 80A max, 32V DC max, screw terminals for 14-4 AWG wire. Replaces discontinued PN 5006. Fuse sold separately.
SKU BLUE-5006100
$30.80MSRP $36.96
Blue Sea SystemsBlue Sea Systems MAXI In-Line Fuse Holder
MAXI in-line fuse holder, 48A max, 32V DC max, supplied with a 5in #6 red lead wire and two adhesive-lined sealing shrink tubes. Fuse sold separately.
SKU BLUE-5068
$26.60MSRP $31.92
Blue Sea SystemsBlue Sea Systems MRBF Terminal Fuse - 100A
MRBF Terminal Fuse - 100A. Requires the use of Terminal Fuse Blocks PN 5191 or PN 2151—do not mount the fuse directly to the battery terminal. Interrupt rating satisfies ABYC requirements for DC Main circuit protection on large battery banks.
SKU BLUE-5183
$16.10MSRP $19.32
Blue Sea SystemsBlue Sea Systems MRBF Terminal Fuse - 125A
MRBF Terminal Fuse - 125A. Requires the use of Terminal Fuse Blocks PN 5191 or PN 2151—do not mount the fuse directly to the battery terminal. Interrupt rating satisfies ABYC requirements for DC Main circuit protection on large battery banks.
SKU BLUE-5184
$16.10MSRP $19.32
Blue Sea SystemsBlue Sea Systems MRBF Terminal Fuse - 150A
MRBF Terminal Fuse - 150A. Requires the use of Terminal Fuse Blocks PN 5191 or PN 2151—do not mount the fuse directly to the battery terminal. Interrupt rating satisfies ABYC requirements for DC Main circuit protection on large battery banks.
SKU BLUE-5185
$16.10MSRP $19.32
Blue Sea SystemsBlue Sea Systems Panel Mount AGC/MDL Fuse Holder Replacement Cap
Replacement cap for Blue Sea's panel-mount AGC/MDL fuse holder, PN 5021. This listing is the cap only — it does not include the holder body itself.
SKU BLUE-5022B
$2.87MSRP $3.44
Blue Sea SystemsBlue Sea Systems Panel Mount AGC/MDL Fuse Holder, Waterproof
Panel-mount AGC/MDL fuse holder, 20A max, waterproof knob design. Withstands salt spray, rain, and momentary immersion. Fuse sold separately.
SKU BLUE-5021B
$4.28MSRP $5.14
