Bloc de fusibles SafetyHub 100 - SafetyHub 100 Fuse Block

Bloc de fusibles SafetyHub 100 - Dimensioned Drawing

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Blue Sea Systems

7725B-BSS

SafetyHub 100 fuse block

The Blue Sea SafetyHub 100 fuse block (7725B-BSS) centralizes marine electrical protection with AMI®/MIDI® fuses (up to 240A) and ATO®/ATC® fuses (up to 50A) in a single housing. Designed for 12V DC, it provides IP66 protection and ignition protection (ISO 8846/SAE J1171). The 7725B-BSS version is supplied without the ATO®/ATC® circuit connector included with part number PN 7725.

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£96.76 GBP

£96.76 GBP ~~£131.00 GBP~~

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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

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Technical specifications

Fuse type	AMI/MIDI, ATO/ATC
Nominal voltage	12
Amperage	280.0
Plage de calibre de fusible compatible	1A-20A (ATO/ATC), 30A-200A (AMI/MIDI)
Nombre de fusibles	7.0
Mounting type	Surface-mounted installation
Taille des goujons	8
Taille du filetage des bornes	8
Couvercle de protection inclus	Oui
Protection anti-déflagrante	Oui
IP rating	IP66
Flame retardant	Oui
Couple de serrage recommandé des bornes	20.3
Section de câble maximale par goujon	120.0
Dimensions (W x H x D)	146.05 x 55.88 x 99.06 mm
Weight	1.45
Certifications	CE, ISO 8846, SAE J1171, E-marked
Ami Midi Max Amperage Per Block	240
Ami Midi Max Amperage Per Circuit	170
Ami Midi Min Cable Size Awg	2/0 AWG
Ami Midi Min Cable Size Mm2	70
Ami Midi Screw Size	M5 x .8 x 10
Ami Midi Screw Torque Nm	3.0
Ato Atc Max Amperage Per Block	50
Ato Atc Max Amperage Per Circuit	20
Min Input Cable Size Awg	4/0 AWG
Product type	Fuse block
Recommended Ring Terminal Size Imperial	5/16”

Detailed description

The Blue Sea Systems SafetyHub 100 fuse block, part number 7725B-BSS, is an electrical protection solution designed for marine environments. This consolidated module manages fuses from 1A to 200A, allowing direct installation at the battery for non-switched protection or after the battery switch for switched protection.

Design and Technical Specifications

This fuse block operates at a nominal voltage of 12V DC. It can support a maximum combined amperage of 280A with a 4/0 AWG (120 mm²) input cable. The SafetyHub 100 integrates two types of fuse blocks:

The AMI®/MIDI® block is intended for high-current circuits, accepting fuses from 30A to 200A. It can handle a maximum amperage of 240A per block and 170A per circuit. A minimum cable of 2/0 AWG (70 mm²) is recommended for these circuits.
The ATO®/ATC® block is used for low-current circuits, accepting fuses from 1A to 20A. Its maximum amperage is 50A per block and 20A per circuit.

The SafetyHub 100’s design ensures ignition protection in compliance with ISO 8846 and SAE J1171 standards and features an IP66 ingress protection rating, protecting against powerful water jets. The input and output studs are M8 x 1.25 in size, with a recommended tightening torque of 20.3 N·m (15 ft-lb) for the input and 3.0 N·m (27 in-lb) for the M5 x .8 x 10 screws of the ATO®/ATC® fuses.

Integration and Positioning

Compared to separate modular solutions, the SafetyHub 100 centralizes protection, reducing clutter and simplifying wiring. It serves as a compact and secure alternative to scattered installations of individual fuse holders or circuit breakers for applications requiring both low- and high-consumption circuits. The PN 7725B-BSS reference is supplied without the ATO®/ATC® circuit connector, which is included with the PN 7725 reference, offering flexibility for customized installations.

Expert opinion

Pol CONIN

Digital Manager

« Robust centralization of marine electrical protections »

Blue Sea Systems' SafetyHub 100 is a critical component for managing electrical circuits on board, particularly for recreational boats and rigid inflatables where space is often limited. Its ability to consolidate AMI®/MIDI® fuses for high loads (windlass, engine start) and ATO®/ATC® fuses for lighter equipment (navigation electronics, bilge pumps) in a single housing greatly simplifies the electrical architecture.

The main advantage lies in its compact design and robustness, reinforced by an IP66 rating and compliance with ignition protection standards ISO 8846 and SAE J1171. This makes it suitable for installations in engine compartments or areas exposed to spray, provided it is not mounted directly above vented lead-acid batteries to prevent corrosion from gases. Installation is straightforward thanks to robust studs and specified torque values, ensuring reliable connections.

This model is relevant for refits or new installations where centralized and reliable protection is desired, avoiding the need for multiple fuse blocks. It stands out from simpler fuse boxes by handling high currents and providing integrated protection. However, for more complex systems with numerous circuits or advanced diagnostic requirements, intelligent distribution panels may be preferable. The SafetyHub 100 excels in simplifying essential primary and secondary circuits.

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SafetyHub 100 fuse block

£96.76 GBP

£96.76 GBP ~~£131.00 GBP~~

Frequently Asked Questions

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What is the SafetyHub 100 fuse block from Blue Sea Systems?

The SafetyHub 100 is an ignition-protected fuse block designed for marine environments. It consolidates protection for multiple circuits, accepting fuses from 1A to 200A. It can be wired directly to the battery for non-switched protection or after the battery switch for switched protection.

What is the nominal operating voltage of the SafetyHub 100?

The SafetyHub 100 fuse block operates at a nominal voltage of 12V DC.

What is the maximum combined amperage that the SafetyHub 100 can support?

The SafetyHub 100 can support a maximum combined amperage of 280A, provided a minimum 4/0 AWG (120 mm²) input cable is used.

Is the SafetyHub 100 protected against water and ignition?

Yes, the SafetyHub 100 is ignition-protected in accordance with ISO 8846 and SAE J1171 standards. It also has an IP66 ingress protection rating, meaning it is protected against powerful water jets.

Which types of fuses are used in the AMI®/MIDI® block of the SafetyHub 100?

The AMI®/MIDI® block of the SafetyHub 100 is designed for high-current circuits and accepts fuses ranging from 30A to 200A.

What is the maximum amperage per circuit and per block for AMI®/MIDI® fuses?

For the AMI®/MIDI® block, the maximum operating amperage is 240A per block and 170A per circuit.

What types of fuses are used in the ATO®/ATC® block of the SafetyHub 100?

The ATO®/ATC® block in the SafetyHub 100 is used for low-current circuits and accepts fuses ranging from 1A to 20A.

What is the maximum amperage per circuit and per block for ATO®/ATC® fuses?

For the ATO®/ATC® block, the maximum operating amperage is 50A per block and 20A per circuit.

What is the minimum recommended cable size for high-current circuits (AMI®/MIDI®)?

For high-current circuits using the AMI®/MIDI® block, the minimum recommended cable size to meet rated values is 2/0 AWG (70 mm²).

Where should I mount the SafetyHub 100 fuse block?

The SafetyHub 100 must be installed in an easily accessible location, as close as possible to the battery. It is recommended to mount it in a dry and protected area to prevent corrosion of the wires and connection terminals. Avoid mounting it directly above vented lead-acid batteries to prevent exposure to corrosive gases. A vertical orientation is preferable.

What safety precautions should I take before installing the SafetyHub 100?

Before starting the installation, it is imperative to disconnect all battery connections. Blue Sea Systems strongly recommends that a competent electrical professional carry out the installation of this product.

How to connect the SafetyHub 100 for non-switched protection?

For non-switched protection, the SafetyHub 100 must be connected directly to the battery's positive terminal.

How to connect the SafetyHub 100 for switched protection?

For switched protection, the SafetyHub 100 must be connected after the battery switch, linking the battery switch output to the SafetyHub 100 input stud.

What is the recommended torque for the SafetyHub 100 input stud?

The recommended torque for the M8 x 1.25 input stud on the SafetyHub 100 is 20.3 N·m (15 ft-lb).

What is the recommended torque for ATO®/ATC® fuse screws?

The recommended torque for M5 x .8 x 10 ATO®/ATC® fuse screws is 3.0 N·m (27 in-lb).

Can I use the SafetyHub 100 to protect engine starter circuits?

Yes, high-current loads such as an engine starter circuit can be connected to the high-current AMI®/MIDI® studs. Note that starter motor wires do not require fuse protection. If you choose not to fuse the starter motor circuit, you can use the engine circuit jumper PN 7732 instead of an AMI®/MIDI® fuse.