Water-Resistant Circuit Breaker Switch Panel - Gray, 4 Positions - Water-Resistant Circuit Breaker Switch Panel - Gray, 4 Positions

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Blue Sea Systems

4320-BSS

Waterproof circuit breaker switch panel - Gray, 4 positions

The Blue Sea 4320 watertight circuit breaker panel is a compact 4-position solution ideal for protecting exposed marine circuits. Its IP66 front panel ensures resistance to powerful water jets, and its 15A illuminated circuit breakers provide clear signaling and overcurrent protection.

This model is part of the Blue Sea water-resistant panel range, offering a purely circuit breaker solution, unlike the 4321/4324 versions with USB chargers. Included: the panel, 15 square labels, #6 5/8" stainless steel mounting screws, and instructions.

Positions: 4

4 6

Equipment: Standard

Standard 12 V + USB socket

Retail priceBenefit from the professional rate

£38.29 GBP

£38.29 GBP ~~£42.65 GBP~~

Shipping calculated at checkout.

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

Positions	4.0
Nominal voltage	12V
Max Amperage	45.0
Type de disjoncteur	Toggle circuit breaker
Included Breakers	4.0
Rétroéclairé	Oui
Included Labels	15 square labels
Mounting type	Surface mount
Panel Material	Polycarbonate/ABS
Dimensions (W x H x D)	119.38 x 127.76 x 44.45 mm
Alarm output	false
Amperage	15
Breaker Boot Material	Silicone
Breaker Type	Toggle circuit breaker
Color	Gray
Connector type	Male quick-connect 1/4", Eye terminal #10 (M5)
Corrosion resistance	Yes
Compatible CZone	false
Support mise à jour firmware	false
Flame retardant	Yes
Matériau du joint	EPDM
Protection anti-déflagrante	false
IP rating	IP66
Low-profile design	Yes
Compatible MasterBus	false
Max Mounting Screw Torque	1.13
Max Voltage	12
Operating voltage range	12V DC
Poles	1
Product use	Electrical distribution and overcurrent protection in harsh marine environments.
Product type	Waterproof circuit breaker panel
Reset Type	Manual
Ring Terminal Size	#10 (5 mm)
Terminal Stud	#10 (M5)
Uv Resistant	Yes
Type de connexion câblage	Two-wire connection

Detailed description

Designed for exposed marine environments, the Blue Sea 4320 waterproof circuit breaker panel provides a reliable and robust electrical distribution solution. This 4-position, gray panel is specifically suited for applications requiring protection against water and external elements, such as flybridges or open cockpits. It ensures protection against powerful water jets thanks to its IP66-compliant front when mounted with its gasket.

Electrical Performance and Protection

Each position features a 15A illuminated circuit breaker, providing both a switch function, power-on indication, and overcurrent protection. The panel supports a maximum total continuous current of 45A at a nominal voltage of 12V DC. The circuit breakers are equipped with waterproof silicone caps, and the panel includes an EPDM gasket to prevent water infiltration. Resetting a circuit breaker is done by pressing OFF first, then ON.

Design and Installation

The panel surface is made of UV-stabilized, flame-retardant, and corrosion-resistant polycarbonate/ABS material, ensuring durability in marine conditions. Its compact dimensions of 119.38 mm width, 127.76 mm height, and 44.45 mm depth, along with a low profile, facilitate installation in tight spaces. The "male quick connect" 1/4" terminals for the circuit breakers and #10 (M5) ring terminals for power simplify wiring. A common busbar (sold separately) is recommended for clean installation. The panel comes with a set of 15 square circuit labels for clear function identification, as well as #6 x 5/8" stainless steel mounting screws.

Positioning in the Blue Sea Range

The 4320 model stands out from other Blue Sea panels by its dedicated configuration for circuit breakers only. For example, models 4321 and 4324, while similar in size for 4 positions, include a 12V DC outlet and a dual 2.1A USB charger. Models 4322 and 4325, on the other hand, offer 6 positions for higher circuit requirements. The 4320 is therefore ideal for users seeking a simple and direct solution for protecting and switching 4 essential circuits, without built-in charging features, allowing greater flexibility for external accessories.

Documentation

Type	Nom
	EN - Wiring Schematic - Water-Resistant Circuit Breaker Switch Panel - Gray, 4 Positions
	EN - Sell Sheet - Water-Resistant Circuit Breaker Switch Panel - Gray, 4 Positions

Expert opinion

Pol CONIN

Digital Manager

« Blue Sea 4320 Circuit Breaker Panel: Reliable Protection for Harsh Environments »

The Blue Sea Systems 4320 circuit breaker panel is a pragmatic solution for managing electrical circuits in demanding marine environments. Its design makes it particularly suitable for mid-sized pleasure boats or exposed areas such as exterior helm stations or open cockpits, where moisture is constant. The IP66 protection rating on the front, ensured by the EPDM gasket and silicone circuit breaker caps, guarantees effective resistance to water spray and weather, a critical factor for long-term reliability.

The integration of 15A circuit breakers on each of the 4 positions, with illuminated indication and push-button reset function, simplifies fault detection and resolution. For installation, the low-profile design and quick-connect terminals are major advantages, reducing wiring time and facilitating integration into often constrained spaces. It is important to carefully plan the total load, which must not exceed 45A continuous for the entire panel, to maintain system integrity.

This model positions itself as a mid-range option from Blue Sea for simple circuit protection. Unlike the 4321 or 4324 versions that include 12V and USB outlets, the 4320 prioritizes pure circuit breaker functionality. This offers flexibility for installations where charging needs are covered by other devices or are non-existent. It is an excellent base for simple systems requiring four dedicated circuits, such as navigation lights, bilge pump, horn, and small audio equipment. It is less suitable for complex installations requiring a large number of circuits or very high individual amperages, which require modular panels or higher-power circuit breakers.

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Waterproof circuit breaker switch panel - Gray, 4 positions

£38.29 GBP

£38.29 GBP ~~£42.65 GBP~~

Frequently Asked Questions

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What is the main function of this Blue Sea circuit breaker panel?

This 4-position waterproof circuit breaker panel is designed for electrical distribution in exposed marine environments. It provides switch functionality, power-on indication, and overcurrent protection for each circuit.

Is this panel truly watertight for outdoor use on a boat?

Yes, the front panel complies with IP66 when mounted with its gasket, meaning it is protected against powerful water jets. It is designed for applications requiring protection from water and outdoor elements, such as flybridges or open cockpits.

How many circuits can I control with this panel?

This panel is a 4-position model, allowing you to control and protect up to four separate electrical circuits.

What is the nominal rating of each circuit breaker?

Each position is equipped with a 15A illuminated circuit breaker, providing overcurrent protection for each individual circuit.

What is the maximum total DC current the panel can handle?

The panel supports a maximum total DC current of 45A at a nominal voltage of 12V DC.

What is the operating voltage of this panel?

This circuit breaker panel is designed to operate at a nominal voltage of 12V DC.

What material is the panel made of and is it resistant to marine conditions?

The panel surface is made of polycarbonate/ABS, a UV-stabilized, flame-retardant material resistant to corrosion, ensuring durability in marine conditions.