Bloc fusibles compacts à lame ST - 4 circuits - ST Blade Compact Fuse Blocks - 4 Circuits

Bloc fusibles compacts à lame ST - 4 circuits - Wiring Diagram

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Blue Sea Systems

5045B-BSS

ST blade compact fuse block - 4 circuits

The ST Blue Sea 5045B-BSS compact fuse block with blade terminals is a reliable solution for protecting 4 marine circuits. "Ignition Protected" and designed for ATO/ATC fuses, it optimizes space with its single-sided wiring, ideal for confined installations. Part of the ST-Blade range, this model is supplied with an insulating cover; fuses are sold separately.

Circuits: 4

4 8

Retail priceBenefit from the professional rate

£21.98 GBP

£21.98 GBP ~~£34.12 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

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Support service

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Technical specifications

Fuse type	ATO/ATC
Nominal voltage	32
Amperage	30.0
Plage de calibre de fusible compatible	Up to 30 A per circuit
Nombre de fusibles	4.0
Mounting type	Surface mount
Taille des goujons	4.8 mm
Taille du filetage des bornes	4.2 mm
Couvercle de protection inclus	Oui
Protection anti-déflagrante	Oui
Flame retardant	Oui
Conformité ABYC	Oui
Contact material	Tinned copper
Dimensions (W x H x D)	92.5 x 43.8 x 32.5
Weight	0.11
Certifications	CE,ISO 8846
Bus Material Plating	Tinned
Cable Entry Location	Single side
Circuit Configuration Type	Common source
Compatible Terminal Type	Eye splice, fork splice
Matériau du couvercle	Insulating plastic
Main Terminal Stud Size Imperial	#10-32
Max Total Amperage	100
Mounting Screw Size Imperial	#8
Product type	Fuse block
Terminal Screw Size Imperial	#8-32
Terminal Screw Type	Screw with captive lock washer

Detailed description

The Blue Sea 5045B-BSS compact blade fuse block with 4 circuits is designed for protecting marine electrical circuits. This device integrates four circuits for fast-acting ATO® and ATC® fuses, providing a surface-mount solution for systems requiring reliable and secure power distribution.

Design and Technical Specifications

With its compact design, this fuse block allows cable entry from one side only, optimizing available space on board. It is "Ignition Protected", making it safe for use in gasoline engine compartments, and complies with ABYC/USCG insulation requirements. The bus bars and fuse clips are made of tinned copper for improved conductivity and corrosion resistance. The block accepts ring or spade terminals and is equipped with #8-32 terminal screws with captive lock washers, as well as a #10-32 threaded stud for the main power feed. Its maximum operating voltage is 32V DC, with a maximum amperage of 30A per circuit and 100A per block. Mounting is done using #8 (M4) screws.

Positioning in the Blue Sea Range

The 5045B-BSS model, with its four circuits, is positioned as an option for smaller installations or for adding dedicated circuits compared to its larger sibling, the Blue Sea 5046, which offers eight circuits. While the 5046 is suited for more extensive distribution needs, the 5045 excels where space is limited and a smaller number of circuits is required. This ST-Blade series is a standard solution for circuit protection, recognized for its reliability in marine environments. Standard and custom labels are available separately for clear circuit identification. ATO or ATC fuses are sold separately.

Expert opinion

Pol CONIN

Digital Manager

« Compact protection solution for marine auxiliary circuits »

This compact ST-Blade 4-circuit Blue Sea Systems fuse block is a practical solution for managing auxiliary circuits on recreational craft or tenders. Its small footprint and single-sided cable entry make it particularly suitable for confined spaces such as helm consoles, battery compartments, or technical lockers where space is critical. The key advantage of this model is its "Ignition Protected" certification, an essential requirement for any electrical installation near the engine, especially in fuel compartments, eliminating the need for additional specific enclosures.

Compared to the 5046 8-circuit model in the same series, the 5045 is the appropriate choice when a limited number of protections is sufficient for a given system, such as a group of navigation instruments, a bilge pump system, or deck lighting. It provides a solid foundation for creating isolated distribution points, simplifying troubleshooting and installation modularity. It is important to note that fuses must be purchased separately and that the 100A capacity per block, while sufficient for 4 x 30A circuits, must be respected for the main power line. This product is not intended to replace a full vessel electrical panel but rather to complement an existing architecture or equip secondary systems in an efficient and safe manner.

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ST blade compact fuse block - 4 circuits

£21.98 GBP

£21.98 GBP ~~£34.12 GBP~~

Frequently Asked Questions

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What is a compact ST blade fuse block - 4 circuits Blue Sea?

This is a marine electrical circuit protection device that integrates four circuits for fast-acting ATO® and ATC® blade fuses. It is designed for surface mounting and provides reliable and secure power distribution.

How many circuits can this fuse block protect?

This fuse block is designed to protect up to four separate electrical circuits.

Which types of fuses are compatible with this fuse block?

This fuse block is compatible with ATO® and ATC® blade fuses (fast-acting).

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 this block can support?

This block can support a maximum amperage of 30A per circuit and a total of 100A for the entire block.

Can this fuse block be used in a gasoline engine compartment?

Yes, this fuse block is "Ignition Protected" (protected against ignition), making it safe for use in gasoline engine compartments. It meets the external ignition protection requirements of ISO 8846 and SAE J1171.

What materials are the fuse blocks and clips made of?

The fuse blocks and clips are made of tinned copper, which ensures better conductivity and excellent resistance to corrosion in a marine environment.

How is this fuse block installed?

Installation is surface-mounted using #8 (M4) screws. The mounting screw centers are spaced 65.1mm (2.56") apart.

What are the dimensions of this compact fuse block?

The dimensions of this fuse block are 92.5mm (length) x 43.8mm (width) x 32.5mm (height).

Is the fuse block supplied with a cover?

Yes, this fuse block is supplied with an insulating cover that meets ABYC/USCG insulation requirements.

Which types of cable lugs are accepted by the terminals?

The terminals of this fuse block accept ring or fork cable lugs.

What type of screw is used for circuit connections?

Circuit connections use #8-32 terminal screws with a captive lock washer to ensure secure fastening.

What is the type of stud for the main power connection?

The main power connects via a #10-32 threaded stud.

Is this fuse block compliant with maritime standards?

Yes, it meets ABYC/USCG insulation requirements and complies with external ignition protection standards ISO 8846 and SAE J1171. It is also certified EC Type Examination under Directive 2013/53/EU.

How is the wiring organized on this fuse block?

Its design allows cable entry from one side only, optimizing available space and simplifying wiring.

Are the fuses included with the block?

No, fuses are sold separately and are not included with the fuse block.

What is the height of the connection terminals?

The height of the connection terminals is 9.5mm (0.38").

What is the height of the main bus?

The height of the main bus is 8.6mm (0.34").

What is the difference between this model (5045) and model 5046?

Model 5045 (this product) offers 4 circuits, while model 5046 offers 8 circuits. The 5045 is more compact and suited for installations requiring fewer circuits or limited space.

Is this fuse block suitable for use in freshwater or saltwater?

Thanks to its tinned copper fuse buses and clips, it offers excellent corrosion resistance, making it suitable for marine environments, including saltwater use.