The Blue Sea Systems Fuse Block is a vital component in marine electrical systems. It organizes and protects electrical circuits by housing multiple fuses in one unit.
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1-2 weeks delivery time The Blue Sea 5026 ST Blade Fuse Block provides 12 ATO®/ATC® fused circuits with an integrated negative bus and insulating cover for organized DC branch circuit protection up to 32V DC. It supports 100A per block and 30A per circuit (depending on fuse and wire sizing) and uses #10-32 studs for both positive and negative distribution. The cover meets ABYC/USCG insulation requirements, includes an easy-open latch, storage for two spare fuses, and label recesses for Small Format Labels (with 20 write-on circuit labels included).
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$ 103.35
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1-2 weeks delivery time The Blue Sea 5007100 Class T Fuse Block supports Class T fuses rated 110–200A with maximum system voltage 160V DC and cable capacity up to 4/0 AWG. It features tin-plated copper fuse blocks, stainless steel 1/4"-20 (M6) studs, 72 in-lb (8.13 Nm) torque rating, insulating cover with multi-direction breakouts, UL94-V0 heat-resistant base, and ignition protection. Mounting uses 1/4" or M6 hardware. Weight: 1.10 lb (0.5 kg).
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$ 82.14
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1-2 weeks delivery time The Blue Sea 5191 MRBF Terminal Fuse Block is a compact high-amp fuse block designed for tight installations requiring DC main, inverter, windlass, and bow thruster circuit protection using MRBF fuses from 30A to 300A (fuse sold separately). It supports up to 300A and 58V DC, uses an isolated stud design with standard M8 (5/16") hardware to allow terminal stacking, includes an insulating cap to help prevent accidental shorts, accepts 5/16" ring terminals, and mounts on 3/8" terminal studs. Maximum torque is 75 in-lb (8.47 Nm) and weight is 0.16 lb (0.07 kg).
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$ 51.64
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1-2 weeks delivery time The Blue Sea 5005 is an ANL fuse block for 12–32V DC systems, designed to accept ANL fuses rated from 35A to 300A (fuse sold separately). It features a swing-out design for fuse replacement without removing fasteners, 5/16" (M8) stainless steel studs, and an insulating cover that meets ABYC and USCG requirements with multi-directional wire access.
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$ 46.72
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1-2 weeks delivery time The Blue Sea 5035 ST Blade Fuse Block provides 6 independent ATO®/ATC® fused circuits for DC systems up to 32V DC, rated 30A per circuit and up to 40A per jumped circuit group. It features tin-plated copper fuse clips for corrosion resistance and improved efficiency, a clear insulating cover with label recesses for Small Format Labels, and a built-in spare fuse holder. The block mounts with #8 screws (M4) and accepts ring or snap fork terminals, with two terminal block jumpers included.
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$ 82.45
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1-2 weeks delivery time The Blue Sea 2151 is a dual MRBF terminal fuse block rated up to 300 A at 58 V DC, designed for high-current DC circuits, featuring M8 (5/16") terminal studs, maximum torque of 75 in-lb (8.47 Nm), support for 5/16" ring terminals, and an insulating cap to prevent accidental shorts; fuse sold separately.
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$ 63.03
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1-2 weeks delivery time The Blue Sea 5001 is a MEGA® / AMG® fuse block for 32V DC systems, designed to accept 100–300A fuses (sold separately). It uses 5/16" (M8) stainless steel studs and includes an insulating cover that meets ABYC and USCG requirements, with multi-directional wire access and high-torque terminals for secure electrical connections.
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$ 42.12
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1-2 weeks delivery time The Blue Sea 5006100 MAXI Fuse Block is rated up to 80A and 32V DC and supports 14–4 AWG wiring with screw terminals torqued to 25 in-lb (2.82 Nm). It features a snap-on insulating cover, ignition protection, side or bottom wire entry breakouts, and terminal screws that compress fuse blades for low-resistance connections. Mounting uses #10 screws. Weight: 0.25 lb (0.11 kg).
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$ 49.84
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1-2 weeks delivery time The Blue Sea 5015 is a 6-circuit ST glass fuse block for 12–32V DC systems with an integrated negative bus and insulating cover. It supports AGC and MDL (3AG) glass fuses with a rating of 30A per circuit and 100A per block. The clear cover insulates all conductive parts to meet ABYC and USCG requirements and provides label recesses and spare fuse storage.
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$ 89.70
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1-2 weeks delivery time The Blue Sea 5023 ST Blade Battery Terminal Mount Fuse Block is a 4-circuit ATO®/ATC® fuse block designed to mount directly on a battery terminal stud (clearance for 3/8" [M10]). Rated for up to 32V DC, it supports 100A per block and 30A per circuit (depending on fuse and wire sizing). It includes an insulating cover, four nylon insulated ring terminals, and one 15A ATO/ATC fuse (PN 5242).
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$ 44.39
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1-2 weeks delivery time The Blue Sea 5024 ST Blade Battery Terminal Mount Fuse Block Kit adds 4 fused ATO®/ATC® circuits directly at a battery terminal using a 3/8" (M10) stud mount. Rated up to 32V DC, it supports 100A per block and 30A per circuit (depending on fuse and wire sizing) and includes an insulating cover, 4-circuit negative busbar, write-on labels, and nylon insulated ring terminals (four 16–14 AWG and four 12–10 AWG). It is Ignition Protected and meets ISO 8846 and SAE J1171.
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$ 63.34
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1-2 weeks delivery time The Blue Sea 5025 ST Blade Fuse Block provides 6 ATO®/ATC® fused circuits with a built-in negative bus and insulating cover for organized branch circuit protection up to 32V DC. It supports 100A per block and 30A per circuit (depending on fuse and wire sizing) and uses #10-32 studs for both positive and negative distribution. The cover meets ABYC/USCG insulation requirements, includes an easy-open latch, storage for two spare fuses, and label recesses for Small Format Labels (with 20 write-on circuit labels included).
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$ 82.68
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1-2 weeks delivery time The Blue Sea 5028 ST Blade Fuse Block provides 6 ATO®/ATC® fused circuits with an insulating ABYC/USCG-compliant cover for clean branch circuit protection up to 32V DC. It supports 100A per block and 30A per circuit (depending on fuse and wire sizing) and uses a #10-32 positive bus stud with #8 screw (M4) mounting. The cover includes a push-button latch, storage for two spare fuses, and label recesses for Small Format Labels, with 20 write-on circuit labels included.
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$ 72.47
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Blue Sea 5029 - ST Blade Fuse Block, 12 Circuits with Cover, 32V DC, 100A per Block, 30A per Circuit
1-2 weeks delivery time The Blue Sea 5029 ST Blade Fuse Block provides 12 ATO®/ATC® fused circuits with an insulating ABYC/USCG-compliant cover for organized DC branch circuit protection up to 32V DC. It supports 100A per block and 30A per circuit (depending on fuse and wire sizing) and uses a #10-32 positive bus stud with #8 screw (M4) mounting. The cover features a push-button latch, storage for two spare fuses, and label recesses for Small Format Labels, with 20 write-on circuit labels included.
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$ 93.14
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1-2 weeks delivery time The Blue Sea 5032 ST Blade Split Bus Fuse Block provides 12 ATO®/ATC® fuse circuits in two isolated 6-circuit groups, designed for systems needing a mix of switched and 24-hour circuits or two isolated batteries. Rated up to 32V DC, it supports 30A per circuit with 100A total (not to exceed 80A per load group). It includes a negative bus with #10-32 stud, a clear ABYC/USCG-compliant insulating cover with fuse storage and label recesses, and #8-32 screw terminals (fuses sold separately).
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$ 150.39
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1-2 weeks delivery time The Blue Sea 5037 ST Blade Fuse Block provides 6 independent ATO®/ATC® fused circuits for DC systems up to 32V DC, rated 30A per circuit and up to 40A per jumped circuit group. It features tin-plated copper fuse clips for corrosion resistance, reduced heat, and improved electrical efficiency, and mounts with #8 screws (M4). The block accepts ring or snap fork terminals and includes two terminal block jumpers (fuses sold separately).
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$ 66.59
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1-2 weeks delivery time The Blue Sea 5045 ST Blade Compact Fuse Block provides 4 ATO®/ATC® fused circuits in a compact surface-mount design with single-side wire entry to minimize footprint. Rated up to 32V DC, it supports 100A per block and 30A per circuit (depending on fuse and wire sizing), includes an ABYC/USCG-compliant insulating cover, and is Ignition Protected when the cover is secured (ISO 8846 / SAE J1171). Built with tin-plated copper buses and fuse clips, it accepts ring or snap fork terminals and includes 4 write-on circuit labels (fuses sold separately).
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$ 60.21
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1-2 weeks delivery time The Blue Sea 5046 ST Blade Compact Fuse Block provides 8 ATO®/ATC® fused circuits in a compact surface-mount design with single-side wire entry to reduce installation footprint. Rated up to 32V DC, it supports 100A per block and 30A per circuit (depending on fuse and wire sizing), includes an ABYC/USCG-compliant insulating cover, and is Ignition Protected when the cover is secured (ISO 8846 / SAE J1171). It uses tin-plated copper buses and fuse clips, accepts ring or snap fork terminals, and includes 8 write-on circuit labels (fuses sold separately).
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$ 96.02
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What types of Blue Sea Systems Marine Electrical Products do you have in your catalog?
Blue Sea Systems Fuse Blocks, Blue Sea Systems Battery Switches, Blue Sea Systems Switch Panels, Blue Sea Systems Cable Clams, Blue Sea Systems Terminal Block, Blue Sea Systems Add-A-Battery Kits, , Blue Sea Systems Circuit Breakers, Blue Sea Systems ML-ACRs, Blue Sea Systems USB, Blue Sea Systems Fuse Holders, Blue Sea Systems 360 Panels