Bloc fusible étanche ST Blade avec couvercle - ST-Blade Water-Resistant Fuse Block: Manual Cover

Bloc fusible étanche ST Blade avec couvercle - Dimension Drawing

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Blue Sea Systems

5056100-BSS

Waterproof ST Blade fuse block with cover

The Blue Sea Systems BLUE SEA ST Blade 5056100-BSS waterproof fuse block provides IP66 circuit protection for ATO/ATC fuses, with a maximum current of 80A per block and 25A per circuit. Its ABYC-compliant design with a manually accessible cover makes it a reliable and practical solution for exposed marine environments. This fuse block comes with four writable circuit labels and storage space for spare fuses and fasteners in the cover.

Retail priceBenefit from the professional rate

51,35€

51,35€ ~~63,20€~~

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Prices shown excluding VAT for Türkiye. If your delivery address is in the European Union, the VAT of the destination country will be added at checkout.

Low stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Fuse type	ATO/ATC
Nominal voltage	32
Amperage	80.0
Compatible fuse rating range	1-25A
Number of fuses	4.0
Mounting type	Surface-mount installation
Stud size (mm)	4.8
Terminal thread size (mm)	4.2
Cover included	Oui
IP rating	IP66
ABYC compliance	Oui
Contact material	Tinned copper
Maximum cable cross-section per stud	21.15
Dimensions (W x H x D)	137.3 x 50.5 x 86.1
Certifications	CE, ABYC
Bus Material	Copper C11000
Bus Material Plating	Tinned
Input Wire Size Awg Range	8 AWG to 4 AWG
Input Wire Size Mm2 Range	8.37 mm² to 21.15 mm²
Max Current Per Circuit A	25
Output Wire Size Awg Range	16 AWG to 10 AWG
Output Wire Size Mm2 Range	1.31 mm² to 5.26 mm²
Product type	Fuse block

Detailed description

Designed for protecting electrical circuits in marine environments, the BLUE SEA 5056100-BSS waterproof ST Blade fuse block with cover provides a compact solution for ATO/ATC-style fuses and low-profile circuit breakers. This model stands out for its ABYC compliance thanks to its yellow knurled thumb-screw cover, allowing quick tool-free access to the fuses.

Waterproof and Versatile Protection

With an IP66 waterproof rating when mounted and its gasket in place, this fuse block resists powerful water jets and spray, ensuring reliable circuit protection. It supports a maximum voltage of 32V DC and a maximum current of 80A per block, with 25A per circuit. It accepts a wide range of wire sizes, from 8 AWG to 4 AWG for the input and from 16 AWG to 10 AWG for the four load outputs, via #8-32 screw terminals and a #10-32 stud. The tinned copper C11000 bus bars and fuse clips ensure stable conductivity and corrosion resistance.

Easy Integration and Maintenance

The 5056100-BSS fuse block integrates with ST-Blade waterproof fuse blocks (models 5056 or 5056100) and 100A waterproof bus bars (models 2356 or 2356100) from the same range for modular installations. Integral grommets maintain waterproofing even if fewer than four loads are used. The cover includes a storage space for spare fuses and fasteners. Unlike the 5056 model, which requires a tool for access, the 5056100-BSS, with its manual cover, meets ABYC standards E-11.4.27 and E-11.9.1.2 for quick, tool-free access to protective devices. Four inscriptible circuit labels are included for clear circuit identification.

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the BLUE SEA ST Blade 5056100-BSS sealed fuse block »

The BLUE SEA ST Blade 5056100-BSS fuse block is a top-tier solution for protecting secondary circuits on vessels exposed to wet environments. Its IP66-rated design, validated by CE certification, makes it particularly suitable for installations in cockpits, exposed lockers subject to spray, or open helm consoles where moisture is constant. The key differentiator of this model is its yellow knurled-screw cover, which allows quick, tool-free access to the fuses. This feature is critical in emergency at-sea situations, where every second counts to identify and replace a blown fuse, and meets ABYC accessibility requirements for distribution panels.

From an installation standpoint, compatibility with standard ring or fork terminals simplifies wiring significantly, reducing time and complexity. The ability to use wires of varying gauges (up to 4 AWG on the input and 10 AWG on the load side) provides valuable flexibility to accommodate diverse power needs. Note that this block is ideal for protecting four separate circuits, such as deck lighting, secondary bilge pumps, or auxiliary instruments. For higher-power distribution needs or larger circuits, it is recommended to pair it with the same BLUE SEA line’s 100A busbars, such as model 2356100, for a consistent and resilient electrical architecture. The integrated spare fuse compartment under the cover is a practical detail that prevents loss and ensures availability when needed.

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Waterproof ST Blade fuse block with cover

51,35€

51,35€ ~~63,20€~~

Frequently Asked Questions

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What is the primary function of this fuse block?

This fuse block is designed to provide water-resistant circuit protection for ATO/ATC-style fuses and Low Profile-style circuit breakers in a compact format, specifically suited for marine environments.

What is the maximum voltage rating supported by this fuse block?

The ST Blade waterproof fuse block supports a maximum operating voltage of 32V DC.

What is the maximum current rating this fuse block can handle?

This fuse block can handle a maximum current of 80A per block and 25A per circuit.

Is this fuse block waterproof?

Yes, the fuse block is rated IP66 when mounted and its gasket is in place. This means it is protected against powerful water jets, making it ideal for marine environments.

Does the fuse block cover require a tool to open?

No, model 5056100-BSS is equipped with a manual cover featuring knurled yellow screws that can be operated by hand. This allows quick, tool-free access to the fuses, meeting ABYC requirements.

What are the specifications of the busbars and fuse clips?

The busbars and fuse clips are made of tinned copper C11000. This material ensures stable conductivity and excellent corrosion resistance, essential in a marine environment.

Does the fuse block include labels for the circuits?

Yes, the fuse block comes with four writable labels to help you identify and organize your circuits.

Is there storage space for spare fuses?

Yes, the fuse block cover includes a practical storage space for spare fuses and fasteners.

How is this fuse block installed?

The fuse block is mounted using through-holes that accept 1/4" (6mm) screws.

What type of terminals is used for wire connections?

Load connections use 4 #8-32 screws with captive star lock washers. The main input uses a #10-32 stud.

What wire sizes are accepted for the fuse block input?

The fuse block accepts a single input wire size from 8 AWG to 4 AWG.

Which wire sizes are accepted for the load outputs?

For the four load outputs, the fuse block accepts wires from 16 AWG to 10 AWG.

What happens if I don't use all four charging circuits?

Full plugs are provided to maintain the block's watertight integrity even when fewer than four loads are used.

Is this fuse block compliant with ABYC standards?

Yes, model 5056100-BSS, with its manual cover, complies with ABYC E-11.4.23, E-11.4.27 and E-11.9.1.2 requirements. These standards address tool-free accessibility and dashboard placement for safety.

Is this product CE marked?

Yes, this fuse block is CE marked, indicating its compliance with European standards.

Which types of fuses are compatible with this block?

This fuse block is compatible with fast-acting ATO, ATC, and EasyID blade-type fuses. It also accepts ATO/ATC Low Profile style circuit breakers.

Can this fuse block be integrated with other Blue Sea Systems products?

Yes, it can be mated with the ST-Blade waterproof fuse blocks (models 5056 or 5056100) and the 100A waterproof busbars (models 2356 or 2356100) from the same range for modular installations.

Which types of ring or fork cleats can be used?

The fuse block is designed to accept standard ring or fork terminals, making wiring easier with common tools.

Is the fuse block compatible with circuit breakers?

Yes, it specifically accepts ATO/ATC Low Profile style circuit breakers in addition to fuses.

Is this fuse block compatible with installations requiring quick access?

Yes, thanks to its yellow knurled screw cap, it allows for quick, tool-free access to the fuses. This feature complies with ABYC requirements for rapid access in an emergency.