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Premium Marine Quality Parts

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Blue Sea Systems 7143 187 Series Dc Circuit Breaker - Surface Mount, 90 Amps - 7143-Bss - 661-7143F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7142 187 Series Dc Circuit Breaker - Surface Mount, 80 Amps - 7142-Bss - 661-7142F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7141 187 Series Dc Circuit Breaker - Surface Mount, 70 Amps - 7141-Bss - 661-7141F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7140 187 Series Dc Circuit Breaker - Surface Mount, 60 Amps - 7140-Bss - 661-7140F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7139 187 Series Dc Circuit Breaker - Surface Mount, 50 Amps - 7139-Bss - 661-7139F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7138 187 Series Dc Circuit Breaker - Surface Mount, 40 Amps - 7138-Bss - 661-7138F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7136 187 Series Dc Circuit Breaker - Surface Mount, 30 Amps - 7136-Bss - 661-7136F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7135 187 Series Dc Circuit Breaker - Surface Mount, 25 Amps - 7135-Bss - 661-7135F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7049 187 Series Dc Circuit Breaker - Panel Mount, 200 Amps - 7049-Bss - 661-7049F1

Blue Sea Systems, Power Distribution
$244.59

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7048 187 Series Dc Circuit Breaker - Panel Mount, 150 Amps - 7048-Bss - 661-7048F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7046 187 Series Dc Circuit Breaker - Panel Mount, 120 Amps - 7046-Bss - 661-7046F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7044 187 Series Dc Circuit Breaker - Panel Mount, 100 Amps - 7044-Bss - 661-7044F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7042 187 Series Dc Circuit Breaker - Panel Mount, 80 Amps - 7042-Bss - 661-7042F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7040 187 Series Dc Circuit Breaker - Panel Mount, 60 Amps - 7040-Bss - 661-7040F1

Blue Sea Systems, Power Distribution
$168.89

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7039 187 Series Dc Circuit Breaker - Panel Mount, 50 Amps - 7039-Bss - 661-7039F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7038 187 Series Dc Circuit Breaker - Panel Mount, 40 Amps - 7038-Bss - 661-7038F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 7036 187 Series Dc Circuit Breaker - Panel Mount, 30 Amps - 7036-Bss - 661-7036F1

Blue Sea Systems, Power Distribution
$186.69

Heavy duty circuit protection when switching and circuit protection are both required. Single lever operation is clearly visible. Ignition protected (conforming to SAE J1171), safe for installation aboard gas-powered boats. Weather resistant. 5/16-18 terminal studs. Maximum voltage 42 volts DC.

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Blue Sea Systems 5503 Anl Fuse Block With Insulating Cover - 35 To 750A - 5503-Bss - 661-5503F1

Blue Sea Systems, Power Distribution
$102.74

Accepts wide range of ANL Fuse amperages for a versatile ignition protected fusing system. Tin-plated copper bus and stainless steel hardware. A 5/16" (M8) stud terminals. Insulation cover with breakouts allow cable access from all directions. Maximum rating: 32 Volts DC.

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Blue Sea Systems 5502 Class T Fuse Block With Insulating Cover - 225 To 400A - 5502-Bss - 661-5502F1

Blue Sea Systems, Power Distribution
$102.74

Recommended for high speed circuit protection of electronic equipment such as inverters. Tin-plated copper bus and stainless steel hardware. 3/8" (M10) stud terminals. Clear insulation cover with breakouts allow cable access from all directions. Maximum ratings: 160 Volts DC.

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Blue Sea Systems 5196 Common Source Fuse Bock - 5196-Bss - 661-5196F1

Blue Sea Systems, Power Distribution
$104.75

Surface mount fuse blocks accommodate three MRBF fuses for consolidated high amperage circuit protection The common source fuse block (5196) provides 3 loads from a single sourceClip-on cover insulates terminal connectionsVersatile wiring options allow all wires to come out a single sideLabel recesses for easy circuit identificationOne-piece stainless flange nuts ensure safe and secure connectionsIgnition protected when used with MRBF fusesFuses sold separately Specifications:Voltage Max. Operating: 58V DCAmperage Max. Operating: 240A per circuitTerminal Fuses Available: 30-300 Amps

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Blue Sea Systems 5194 Independent Source Fuse Bock - 5194-Bss - 661-5194F1

Blue Sea Systems, Power Distribution
$119.78

Surface mount fuse blocks accommodate three MRBF fuses for consolidated high amperage circuit protection The independent source fuse block (5194) is ideal for 3 output battery chargersClip-on cover insulates terminal connectionsVersatile wiring options allow all wires to come out a single sideLabel recesses for easy circuit identificationOne-piece stainless flange nuts ensure safe and secure connectionsIgnition protected when used with MRBF fusesFuses sold separately Specifications:Voltage Max. Operating: 58V DCAmperage Max. Operating: 240A per circuitTerminal Fuses Available: 30-300 Amps

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Blue Sea Systems 5030 St Blade Common Source Ato/Atc Fuse Block W/Negative Bus - 6 Circuits - 5030-Bss - 661-5030F1

Blue Sea Systems, Power Distribution
$100.99

Tin-plated copper buses and fuse clips give 30 Ampere rating per circuit. Rated for 32 Volts DC, 100 Ampere maximum per block. Accepts ATO and ATC fast acting blade type fuses and plug-in style circuit breakers. Thermoplastic base and polycarbonate cover.

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Blue Sea Systems 5029 St Blade Common Source Ato/Atc Fuse Block - 12 Circuits With Cover - 5029-Bss - 661-5029F1

Blue Sea Systems, Power Distribution
$98.48

Clear insulating cover with label recess for small Blue Sea Systems' labels. Cover insulates all conductive parts, satisfying ABYC/USCG requirements. Tin-plated copper buses and fuse clips give 30 Ampere rating per circuit. Rated for 32 Volts DC, 100 Ampere maximum per block. Accepts ATO and ATC fast acting blade type fuses and plug-in style circuit breakers. Thermoplastic base and polycarbonate cover.

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Blue Sea Systems 5028 St Blade Common Source Ato/Atc Fuse Block - 6 Circuits With Cover - 5028-Bss - 661-5028F1

Blue Sea Systems, Power Distribution
$78.23

Clear insulating cover with label recess for small Blue Sea Systems' labels. Cover insulates all conductive parts, satisfying ABYC/USCG requirements. Tin-plated copper buses and fuse clips give 30 Ampere rating per circuit. Rated for 32 Volts DC, 100 Ampere maximum per block. Accepts ATO and ATC fast acting blade type fuses and plug-in style circuit breakers. Thermoplastic base and polycarbonate cover.

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Blue Sea Systems 5026 St Blade Common Source Ato/Atc Fuse Block W/Negative Bus - 12 Circuits With Cover - 5026-Bss - 661-5026F1

Blue Sea Systems, Power Distribution
$111.43

Clear insulating cover with label recess for small Blue Sea Systems' labels. Cover insulates all conductive parts, satisfying ABYC/USCG requirements. Tin-plated copper buses and fuse clips give 30 Ampere rating per circuit. Rated for 32 Volts DC, 100 Ampere maximum per block. Accepts ATO and ATC fast acting blade type fuses and plug-in style circuit breakers. Thermoplastic base and polycarbonate cover.

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Northern Marine Canada
Our products are shipped from Canada!
Parts Warehouse:
Toronto, Ontario, Canada
Head Office:
Kingston, Ontario

About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: get you the right parts, shipped fast, with straightforward service you can count on.