Coupe batterie 500A série M ON/OFF avec clé de verrouillage - Single Circuit ON-OFF with Locking Key - Red

Battery switch 500 A M series on/off with locking key

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Blue Sea Systems

6004B-BSS

Battery switch 500 A M series on/off with locking key

Designed for reliable isolation, the BLUE SEA M series 6004B-BSS battery switch provides ON/OFF switching for a single circuit. With a continuous rating of 300A and IP66 protection, it ensures secure power management up to 48V DC. The locking key provides enhanced security, particularly during maintenance. This product is supplied with its locking key and a protective insulating cover.

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£29.75 GBP

£29.75 GBP ~~£33.81 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

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Support service

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Technical specifications

Product use	Main battery switch for DC circuit
Switch type	ON/OFF
Courant continu (A)	500
Maximale tension dc	48
Nombre de pôles	1
Positions	ON/OFF
Verrouillable à clé	Oui
Type de borne	Bolt-on stand
Terminal size	M10
Type de connexion câblage	Bolt and nut
Type de contrôle	Manual
Mounting type	Panel mount
IP rating	IP66
Operating voltage range	12-48
Weight	0.29
Conformité ABYC	Yes
Cable Size To Meet Ratings Awg	4/0 AWG
Cable Size To Meet Ratings Mm2	120
Ignition protection standard	UL 1500, SAE J1171
Terminal Stud Material	Tinned copper
Terminal Torque Nm	13.56
Ul Certification Standard	UL 1107

Detailed description

Designed for managing a single battery to a single load group, the BLUE SEA 6004B-BSS M series ON/OFF battery switch provides reliable isolation for marine electrical systems and vehicles. This model features a continuous current rating of 300A, an intermittent current rating of 500A (5 min), and a starting current of 900A (30 sec). Its maximum voltage of 48V DC makes it compatible with a wide range of installations.

Design and Technical Features

The 6004B-BSS battery switch is equipped with 3/8" (M10) tinned copper terminals, ensuring maximum conductivity and enhanced corrosion resistance. The one-piece terminal stud design prevents loosening over time. The IP66 protection rating guarantees resistance to dust and powerful water jets, making it suitable for demanding marine environments. This model complies with UL 1500 and SAE J1171 standards for external ignition protection and is UL 1107 listed, also meeting ABYC requirements for battery switches.

Positioning in the BLUE SEA Range

Within the BLUE SEA battery switch range, the 6004B-BSS M series is positioned as a compact and secure solution for single-circuit isolation. Unlike the selector models in the E or HD series, which manage multiple battery banks or allow combinations, the M series, and this model in particular, focuses on simplicity and safety with an ON/OFF switch featuring a locking key. This removable key feature provides additional security, acting as a service lockout device to prevent accidental activation or deactivation of the DC system, particularly during maintenance operations. Its "mini" format makes it ideal for installations where space is limited, such as on small outboard motors or generators.

Documentation

Type	Nom
	6832-003-battery-switches-web_pdf.pdf

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis: BLUE SEA M series battery switch with locking key »

The BLUE SEA M 6004B-BSS battery switch is a critical component for electrical safety on vessels, particularly for simple installations requiring isolation of a single battery bank. Its ON/OFF function with a locking key is a major asset for maintenance and onboard safety: the removable key secures the system when the owner is absent or during technical interventions, preventing accidental power-on. This model is especially suited to small sailboats, tenders, or motorboats with a single starting or service circuit where space is a constraint. It provides a robust solution compliant with ABYC and UL standards, which is essential for certification and insurance of the installation. Unlike the more complex selector switches in Blue Sea’s E-Series or HD-Series ranges, the 6004B-BSS focuses on simple, direct isolation, minimizing potential failure points for single-battery configurations. Installation is straightforward with multiple mounting options and standard-sized terminals, but it is critical to respect the torque specification and use appropriately sized cables (4/0 AWG or 95mm²) to maintain nominal performance.

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Battery switch 500 A M series on/off with locking key

£29.75 GBP

£29.75 GBP ~~£33.81 GBP~~

Frequently Asked Questions

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What is the primary function of the BLUE SEA 6004B-BSS battery switch?

The BLUE SEA 6004B-BSS battery switch from the M series is designed to isolate a single battery from a single load group. It allows power to be cut for safety, maintenance, or storage, and its locking key provides additional security.

What are the current ratings of this battery switch?

This battery switch has the following current ratings:

Continuous current: 300A DCPeak intermittent current (5 minutes): 500A DCPeak starting current (30 seconds): 900A DC

Is the 6004B-BSS battery isolator water- and dust-resistant?

Yes, the 6004B-BSS battery isolator has an IP66 protection rating. This means it is fully protected against dust and powerful water jets, making it suitable for demanding marine environments.

What type of terminals does this battery switch have?

The battery switch is equipped with 3/8" (M10) tinned copper terminals. Their one-piece design prevents loosening over time and ensures maximum conductivity as well as excellent corrosion resistance.

What is the maximum voltage supported by the BLUE SEA 6004B-BSS battery switch?

The BLUE SEA 6004B-BSS battery switch is designed to operate with a maximum voltage of 48 Volts DC.

Why is the battery switch supplied with a locking key?

The removable locking key for the BLUE SEA 6004B-BSS battery switch provides additional security. It acts as a service lockout device, preventing unauthorized or accidental use of the electrical system when the key is removed.

What safety precautions should I take before installing the battery switch?

Before any installation, it is imperative to disconnect the positive terminal of the battery. It is also recommended to consult a marine electrical professional to ensure correct installation and wiring.

What is the recommended cable diameter for connecting the battery switch?

To comply with the battery switch current specifications, use a 4/0 AWG cable (equivalent to 120 mm²) per terminal.

What torque is recommended for the battery disconnect switch terminals?

Battery cable terminals must be tightened under the locking washer and nut with a torque of 13.56 N·m (120 lb-in).

What mounting options are available for this battery switch?

The BLUE SEA 6004B-BSS battery switch offers several mounting options:

Surface mountingFront-panel mounting (requires a 2-5/8" or 67mm hole)Rear-panel mounting (requires a 2-3/16" or 59mm hole)

How to access the cables once the battery switch is installed?

The battery switch is equipped with an insulating cover featuring three removable side pieces. This allows easy access to the cables and the ability to route the wiring in any direction.

Can I turn off the battery switch while the engine is running?

No, it is imperative never to set the battery switch to the OFF position while the engine is running. This could damage the alternator or other components of the electrical system.

Should I turn off the devices before handling the battery isolator switch?

Yes, it is recommended to power off all electrical devices before turning the battery switch to the OFF position to avoid any voltage spikes or potential damage to equipment.

Is this battery switch compatible with the requirements for boats and yachts?

Yes, the BLUE SEA 6004B-BSS battery switch meets all American Boat and Yacht Council (ABYC) requirements for battery switches.

Is the battery switch protected against ignition?

Yes, this battery switch is protected against external ignition, in accordance with UL 1500 and SAE J1171 standards. It is also UL 1107 listed for electric power switches.

Can this battery switch be used to manage multiple battery banks?

No, the 6004B-BSS model from the M series is specifically designed to switch a single battery to a single load group. For managing multiple battery banks or combining them, you should consider other BLUE SEA battery switch series, such as the E or HD series.