Blue Sea Systems fuse blocks protect your wiring from the battery main to the smallest branch circuit. Match the fuse type and amperage to the wire and the load. A fuse protects the wire from overheating, and Blue Sea Systems builds the fuse blocks and fuses to cover everything from the battery main feed down to individual branch circuits. This collection spans blade fuse blocks, high-amp ANL, MEGA, and Class T blocks, plus fuse holders and fuses. Choosing right comes down to the fuse type for the job and sizing the fuse to the wire. Blade fuse blocks for branch circuits ST and standard blade fuse blocks hold ATO and ATC fuses for the everyday circuits, lights, pumps, electronics. Blocks...
5116 200A Class T FuseFeatures: Extremely fast short-circuit response 20,000 Ampere Interrupt Capacity (AIC) UL listed to standard 248-15 DC Tested to UL standard 198L WARNING: This product...
Fuse MEGA 125A/32V5102 MEGA®/AMG® Fuse - 125AMP Features: Most economical fuse for 100-300 Ampere circuit protection For use with Blue Sea Systems' MEGA®/AMG® Fuse Block WARNING: This product can...
All of the company's products are designed to easily integrate into simple or comprehensive electrical systems. The world's leading RV manufacturers are recognizing the requirement for quality electrical...
5056 ST-Blade Water Resistant Fuse Block with CoverProvides water-resistant circuit protection for ATO/ATC fuses & circuit breakers in a compact footprint. The single side nesting design allows for...
Class T Fuse Block with Insulating Cover - 225 to 400AAllows the use of Class T fuses for fast acting circuit protection of inverters and other electronics Four...
Surface Mount 3 Circuit Fuse Block - Independent Source Surface mount fuse blocks accommodate three MRBF fuses for consolidated high amperage circuit protection The independent source fuse block...
Blue Sea Systems designs and manufactures AC and DC electrical products engineered to withstand the demanding applications in Marine and Specialized Vehicle electrical systems.Blue Sea 5037BSS Attributes Power...
Fuse MIDI/AMI 125A Compact fuse with 125A amperage Tin-plated copped for corrosion resistance Clear cover offers visible indication of blown fuses Color-coded for easy amperage identification Ignition protected...
Fuse MIDI/AMI 100A Compact fuse with 100A amperage Tin-plated copped for corrosion resistance Clear cover offers visible indication of blown fuses Color-coded for easy amperage identification Ignition protected...
8293 Contura Actuator Removal Tool Mounts on any Blue Sea Systems Contura Switch Construced of thermal plasitic polycarbonate with a hard nylon surface overlay For each embedded LED...
Blue Sea Systems designs and manufactures AC and DC electrical products engineered to withstand the demanding applications in Marine and Specialized Vehicle electrical systems.Blue Sea 5060BSS Attributes Type: In-Line...
All of the company’s products are designed to easily integrate into simple or comprehensive electrical systems. The world’s leading RV manufacturers are recognizing the requirement for quality electrical...
5104 MEGA®/AMG® Fuse - 175AMPFeatures: Most economical fuse for 100-300 Ampere circuit protection For use with Blue Sea Systems' MEGA®/AMG® Fuse Block WARNING: This product can expose you...
MEGA / AMG Fuse Block - 100-300A with CoverAll of the company’s products are designed to easily integrate into simple or comprehensive electrical systems. The world’s leading RV...
Blue Sea Systems designs and manufactures AC and DC electrical products engineered to withstand the demanding applications in Marine and Specialized Vehicle electrical systems.Blue Sea 5133BSS Attributes Type: Bolt-On...
5065ATO/ATC Waterproof In-Line Fuse Holder supplied with 12 AWG pigtails 30A Maximum fuse amperage WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known...
MRBF Surface Mount 3 Circuit Fuse Block - Common Source Surface mount fuse blocks accommodate three MRBF fuses for consolidated high amperage circuit protection The independent source fuse...
ATO/ATC Fuse Pack - 30 Amp - 25-PackFeatures: Fast-acting type fuses ideal for electronic devices Standard circuit protection device for automobiles and trucks Tin-plated connector blades for corrosion...
ATO/ATC Fuse Pack - 15 Amp - 25-PackFeatures: Fast-acting type fuses ideal for electronic devices Standard circuit protection device for automobiles and trucks Tin-plated connector blades for corrosion...
ATO/ATC Fuse Pack - 10 Amp - 25-PackFeatures: Fast-acting type fuses ideal for electronic devices Standard circuit protection device for automobiles and trucks Tin-plated connector blades for corrosion...
ATO/ATC Fuse Pack - 7.5 Amp - 25-PackFeatures: Fast-acting type fuses ideal for electronic devices Standard circuit protection device for automobiles and trucks Tin-plated connector blades for corrosion...
Snap-on terminal cover insulates all conductive parts, satisfying ABYC/USCG requirements Cover breakouts allow wires from sides or bottom Terminal screws compress fuse blades within blocks for low resistance...
Fuse ATC easyID 31 Piece KitWhen excessive current flows in an electrical circuit, wire insulation can melt and possibly start a fire. Circuit breakers and fuses protect the...
ST-Blade Battery Terminal Mount Fuse BlockFeatures: Easy to install 4 ATO/ATC fused circuits Mounts on the battery terminal stud Screw terminals for securing wires Four Nylon insulated ring...
Blue Sea Systems fuse blocks protect your wiring from the battery main to the smallest branch circuit. Match the fuse type and amperage to the wire and the load.
A fuse protects the wire from overheating, and Blue Sea Systems builds the fuse blocks and fuses to cover everything from the battery main feed down to individual branch circuits. This collection spans blade fuse blocks, high-amp ANL, MEGA, and Class T blocks, plus fuse holders and fuses. Choosing right comes down to the fuse type for the job and sizing the fuse to the wire.
ST and standard blade fuse blocks hold ATO and ATC fuses for the everyday circuits, lights, pumps, electronics. Blocks come with or without a common negative bus, and a model with the negative bus simplifies wiring by giving you a positive fuse and a ground landing in one place. Pick the circuit count you need plus a couple of spares.
The big feeds, from the battery to the panel, windlass, or inverter, need high-amp protection. ANL, MEGA, and AMG blocks cover those loads, while a Class T fuse is the choice for inverters and large battery banks because of its high interrupt rating. The interrupt rating matters. A big lithium or AGM bank can deliver enormous fault current, and a Class T fuse is built to break it safely.
Like a breaker, a fuse exists to protect the wire, so size it to the wire's ampacity, not just the device draw. Pick the wire for the load and length first, then choose a fuse at or below what that wire can carry. Oversizing the fuse defeats the protection.
Many Blue Sea blocks include insulating covers, which prevent accidental shorts across exposed terminals, especially important on a high-amp block near the battery. Use water-resistant fuse holders for in-line protection in exposed spots.
A blown fuse with no spare leaves a circuit dead. Carry spares of each amperage you run so a failure is a quick swap, not a trip-ender. Label the block so you know which fuse feeds what.
Not sure which fuse block your system needs? Tell our techs your circuits and the main feed amperage, and we will match the blade block, high-amp block, fuses, and covers so the whole system is protected. Always verify fuse ratings against ABYC standards for your specific wire size and load before installation.
A fuse protects the wire, so size it to the wire's ampacity, not just the device draw. Pick the wire for the load and length first, then choose a fuse at or below what that wire can safely carry. Oversizing the fuse removes the protection.
Blade fuse blocks hold ATO and ATC fuses for everyday branch circuits. ANL, MEGA, and Class T blocks protect the high-amp main feeds to panels, windlasses, and inverters. Class T is preferred for inverters and large banks for its high interrupt rating.
A large AGM or lithium bank can deliver enormous fault current. A Class T fuse has a high interrupt rating built to break that current safely, which protects the boat where a lower-rated fuse could fail.
A block with a common negative bus gives you a positive fuse landing and a ground landing in one place, which simplifies wiring branch circuits. Choose one with the bus if you want a tidy single point for both.
Yes. A blown fuse with no spare leaves a circuit dead. Carry spares of each amperage you run so a failure is a quick swap, and label the block so you know which fuse feeds what.
