Bloc de fusibles résistant à l'eau ST-Blade - ST-Blade Water-Resistant Fuse Block

Bloc de fusibles résistant à l'eau ST-Blade - Dimensioned Drawing

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Blue Sea Systems

5056-BSS

ST-Blade Water Resistant Fuse Block

The BLUE SEA ST-Blade 5056 fuse block provides IP66 circuit protection for ATO/ATC fuses and circuit breakers in a compact format. Designed for marine environments, it features tinned copper bus bars and allows simple wiring with standard terminals. This model, distinguished by its screw-on cover, integrates into the Blue Sea ST-Blade modular system and comes with four inscriptible circuit labels and storage space for spare fuses.

Configuration: Standalone unit

Standalone unit With manual cover

Retail priceBenefit from the professional rate

£35.08 GBP

£35.08 GBP ~~£38.59 GBP~~

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In 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

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Technical specifications

Fuse type	ATO, ATC, EasyID
Nominal voltage	32
Amperage	80.0
Plage de calibre de fusible compatible	1-25
Nombre de fusibles	4.0
Mounting type	Surface-mount installation
Taille des goujons	4.8
Taille du filetage des bornes	4.2
Couvercle de protection inclus	Oui
IP rating	IP66
Contact material	Tinned copper
Section de câble maximale par goujon	21.15
Dimensions (W x H x D)	137.3 x 86.1 x 50.5
Certifications	CE,IP66
Bus Material	Tinned copper
Bus Material Grade	C11000
Circuit Labels Included	Yes
Circuit Label Options	Engravable, small format
Compatible Circuit Breaker Type	ATO/ATC Low Profile
Type de couvercle	Screw cap
Diamètre des trous de fixation	6
Product type	Fuse block
Terminal Fastener Type	Captive screw with star washer
Terminal Screw Count	4
Terminal Stud Count	1

Detailed description

The BLUE SEA ST-Blade 5056 waterproof fuse block provides reliable circuit protection in demanding marine environments. This compact device is rated IP66 when mounted and gasketed, ensuring resistance to powerful water jets and harsh sea conditions. It is compatible with ATO, ATC, and EasyID fast-blow blade fuses, as well as low-profile ATO/ATC circuit breakers.

Design and Technical Specifications

This fuse block features tinned copper C11000 bus bars and fuse clips, ensuring conductivity and corrosion resistance. It supports a maximum voltage of 32V DC and a maximum current of 80A per block, with 25A per circuit. It accepts an 8 AWG to 4 AWG input wire and four 16 AWG to 10 AWG load wires, allowing installation flexibility with standard ring or fork terminals. Integral plugs maintain the waterproof rating when fewer than four loads are required.

Integration and Differentiation

The 5056 model differs from the 5056100 version by its screw-on cover, which requires a tool for fuse access. This makes it suitable for installations where less frequent access is planned or where tool-secured closure is preferred. Unlike the 5056100 model (which uses wing screws for tool-free access and meets ABYC E-11.4.27 requirements for quick-access panels), the 5056 does not comply with ABYC requirements for main panels requiring tool-free access. It can be nested with other ST-Blade fuse blocks (5056 or 5056100) and the 100A waterproof busbar (2356 or 2356100) from Blue Sea for modular, organized installations. The block ships with four inscriptible circuit labels and includes integrated storage for spare fuses and fasteners in the cover.

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the BLUE SEA ST-Blade 5056 fuse block »

The BLUE SEA ST-Blade 5056 fuse block is a proven circuit protection solution for marine installations requiring resistance to moisture. This model is particularly suitable for secondary circuits or areas of the boat where ABYC E-11.4.27 (rapid access without tools) is not a primary requirement. Its screw-on cover ensures a secure closure, potentially more resistant to vibration or accidental opening than wing-screw systems.

Installation is simplified by the acceptance of standard ring or fork terminals and a wide range of wire gauges (8 AWG to 4 AWG on input, 16 AWG to 10 AWG on load). Modularity is a key advantage; its ability to interlock with other ST-Blade fuse blocks and 100A busbars in the same range allows for clean integration and significant space savings in compact electrical panels. However, it is critical to note that for main switchboards or emergency circuits where ABYC standards require immediate access without tools, the 5056100 model (with wing-screw cover) is more appropriate. The 5056 is ideal for applications where water splash protection (IP66) is required without the need for rapid, tool-free access to fuses, such as in isolated engine compartments or technical lockers.

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ST-Blade Water Resistant Fuse Block

£35.08 GBP

£35.08 GBP ~~£38.59 GBP~~

Frequently Asked Questions

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What is the primary function of the ST-Blade 5056 fuse block?

The ST-Blade 5056 fuse block is designed to provide reliable circuit protection in marine environments. It is water-resistant and compatible with various types of fuses and circuit breakers.

What is the water resistance rating of this fuse block?

This fuse block is rated IP66 when mounted and with the gasket in place. This means it is protected against powerful water jets and harsh sea conditions.

Which materials are used for fuse blocks and clips?

Fuse blocks and clips are made of tinned copper C11000, ensuring excellent conductivity and corrosion resistance.

What is the maximum operating voltage of this fuse block?

The maximum operating voltage of this fuse block is 32V DC.

What is the maximum amperage supported by the block and per circuit?

The fuse block can support a maximum amperage of 80A per block and 25A per circuit.

Does the fuse block include labels for the circuits?

Yes, the fuse block is supplied with four writable circuit labels to facilitate identification.

Is there storage space for spare fuses in the cover?

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

What is the main difference between model 5056 and 5056100?

The main difference lies in the type of cover and access to the fuses:

Model 5056 (this product) uses a screw-on cover requiring a tool for fuse access. Model 5056100 uses yellow wing screws that can be manipulated by hand for tool-free access.