Blue Sea Systems 5056 ST-Blade Water-Resistant 4 Circuit Fuse Block, 32V DC

The Blue Sea Systems 5056 is a water-resistant ST-Blade fuse block that provides circuit protection for up to four separate circuits in a compact footprint. It accepts ATO, ATC, and EasyiD fast-acting blade fuses as well as ATO/ATC-style low profile circuit breakers, giving installers flexibility to mix fuses and breakers on the same block as a project requires. The bus bars and fuse clips are tin-plated copper, and the block accepts standard ring or spade type terminals for simple wiring with common hand tools.

Each of the four circuits is rated 25A, with an 80A maximum operating rating for the block as a whole and a 32V DC maximum operating voltage. The input side accepts one wire from 8 AWG to 4 AWG, while each of the four load circuits accepts wire from 16 AWG to 10 AWG. Four screw terminals use 8-32 screws with captive star lock washers, and there is a single 10-32 stud terminal. Mounting is thru-hole style, accepting 1/4 inch (6mm) screws.

The 5056 nests together with other ST-Blade Water-Resistant Fuse Blocks (5056 or 5056100) and Water-Resistant 100A Bus Bars (2356 or 2356100) to reduce wiring runs when building out a larger circuit panel. It ships with four write-on circuit labels for identifying each circuit, and the cover has built-in storage for a spare fuse and fastener. Fuses and circuit breakers are sold separately.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 5056
• Product Type: ST-Blade 4 Circuit Fuse Block
• Fuse Type Accepted: ATO, ATC, and EasyiD fast-acting blade fuses
• Circuit Breaker Type Accepted: ATO/ATC-style low profile circuit breakers
• Number of Circuits: 4
• Voltage, Max. Operating: 32V DC
• Amperage, Max. Operating: 80A per block / 25A per circuit
• Bus Material: Tin-plated copper
• Input Wire Size: 1 input, 8 AWG to 4 AWG
• Load Wire Size: 4 loads, 16 AWG to 10 AWG
• Screw Terminal: 4x 8-32 screws with captive star lock washer
• Stud Terminal: 1 x 10-32
• Mounting: Thru-hole, accepts 1/4 inch (6mm) screws
• Included Labels: Four write-on circuit labels
• Included Wire Plugs: 3, to maintain water-resistant rating when fewer than 4 loads are used
• Color: Black
• Weight: 0.42 pounds
• Dimensions: 7.75 x 8 x 2.25 inches
• Warranty: Limited Lifetime

Frequently Asked Questions

What is the Blue Sea Systems 5056 fuse block used for? The 5056 is an ST-Blade water-resistant fuse block that provides circuit protection for up to four separate circuits, accepting ATO/ATC blade fuses or ATO/ATC-style low profile circuit breakers in a single compact block.

How many circuits does the 5056 fuse block have? The Blue Sea Systems 5056 has 4 independent circuits, each rated 25A, with an 80A maximum operating rating for the block as a whole.

What types of fuses and circuit breakers does the 5056 accept? It accepts ATO, ATC, and EasyiD fast-acting blade fuses, as well as ATO/ATC-style low profile circuit breakers; fuses and breakers are sold separately from the 5056 block.

What is the maximum voltage and amperage rating of the 5056 fuse block? The 5056 is rated 32V DC maximum operating voltage, with an amperage rating of 80A per block or 25A per circuit.

Is the Blue Sea Systems 5056 fuse block suitable for marine use? The 5056 is designed for general water-resistant circuit protection; for ABYC-compliant marine installations, Blue Sea Systems offers the 5056100 version, which nests and shares the same footprint as the 5056.

What wire sizes does the 5056 fuse block accept? The input side of the 5056 accepts one wire from 8 AWG to 4 AWG, and each of the four load circuits accepts wire from 16 AWG to 10 AWG.

What is included in the box with the 5056 fuse block? The 5056 ships with four write-on circuit labels for marking each circuit and 3 wire plugs to maintain the water-resistant rating if fewer than 4 loads are wired; fuses and circuit breakers are sold separately.

How is the 5056 fuse block mounted? Mounting is thru-hole style, accepting 1/4 inch (6mm) screws, with 4x 8-32 screw terminals and a single 10-32 stud terminal for wiring connections.

What material are the 5056 fuse block's bus bars made of? The bus bars and fuse clips on the 5056 are tin-plated copper, chosen for conductivity and corrosion resistance in a water-resistant enclosure.

Can the 5056 fuse block be expanded or connected with other components? Yes, the 5056 nests with other ST-Blade Water-Resistant Fuse Blocks (5056 or 5056100) and Water-Resistant 100A Bus Bars (2356 or 2356100) to reduce wiring when building a larger panel.

What is the difference between the 5056 and 5056100 fuse blocks? Both the 5056 and 5056100 are ST-Blade Water-Resistant 4 Circuit Fuse Blocks that nest together and share the same voltage and amperage ratings; the 5056100 is the version intended for marine use.

What is the weight and size of the 5056 fuse block? The Blue Sea Systems 5056 fuse block weighs 0.42 pounds and measures 7.75 x 8 x 2.25 inches.