MRBF Terminal Fuse - 80A - MRBF Terminal Fuse - 80A

MRBF Terminal Fuse - 80A - Dimension Drawing

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Blue Sea Systems

5181-BSS

MRBF 80 A terminal fuse

The Blue Sea Systems 80A MRBF terminal fuse is a compact and direct circuit protection solution. Designed for mounting on a battery terminal, it secures high-current equipment such as windlasses or thrusters while minimizing space and connection points. This product is an essential component for the reliability of marine electrical systems.

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20,94€

20,94€ ~~22,92€~~

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In stock

Free pickup point shipping over €150 in France
Pickup at Skysat possible

Custom installation

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Installers near you

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Support service

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Technical specifications

Fuse type	MRBF
Nominal voltage	58 V
Amperage	80.0
Pouvoir de coupure en court-circuit	2.0
Nombre de fusibles	1.0
Mounting type	On battery terminal
Taille des goujons	M8
Taille du filetage des bornes	M8
Fuse included	Oui
Protection anti-déflagrante	Oui
Flame retardant	Oui
Conformité ABYC	Oui
Contact material	Copper alloy
Housing material	Thermoplastic
Couple de serrage recommandé des bornes	11.3
Dimensions (W x H x D)	27 x 23 x 16 mm
Certifications	CE,UL,ABYC,SAE J1171
Application	Protection for marine circuits
Scénario d'application	Main protection for high-current single circuit or secondary protection for multi-circuit distributor
Connection Point Reduction	Significant (direct mounting on terminal)
Connection Reliability	High
High Current Application Focus	Protection of high-current circuits
Simplicité d'installation	High (simplified installation)
Marine grade	Yes
Marque du produit	Blue Sea Systems
Nom complet du produit	[BLUE SEA] MRBF Terminal Fuse - 80A
Product range	MRBF Terminal Fuse
Product type	Fuse

Detailed description

The Blue Sea Systems MRBF 80A terminal fuse is designed for protecting high-current circuits directly at the battery level. This type of fuse with terminal mounting allows for compact and simplified installation, reducing cable length and the footprint of marine electrical systems.

Integrated circuit protection

Unlike traditional inline fuse holders, the MRBF fuse integrates directly onto the battery terminal stud, eliminating the need for additional cables between the battery and the fuse holder. This design minimizes potential connection points, improving system reliability. With an 80-amp rating, it is suitable for securing equipment such as windlasses, bow thrusters, or medium-sized power converters.

Positioning and applications

The positioning of the Blue Sea Systems MRBF 80A fuse stands out for its ability to provide circuit protection in close proximity to the energy source, a critical feature for safety in marine installations. While other solutions like ANL or MIDI fuses require dedicated fuse holders and more complex wiring, the MRBF simplifies the electrical architecture. It is part of the Blue Sea Systems circuit protection range, known for its marine electrical components. It is typically used as the main protection for a single high-current circuit or as secondary protection for a multi-circuit distributor. This 80A model is a common choice for applications requiring a balance between current capacity and compactness.

Documentation

Type	Nom
	EN - Full Scale Fuse Comparison (scaled 1 - 1) - MRBF Terminal Fuse - 80A

Expert opinion

Pol CONIN

Digital Manager

« Direct circuit protection on terminal for marine installations »

The Blue Sea Systems 80A MRBF fuse terminal is an effective solution for protecting high-current circuits in marine installations. Its main advantage lies in its "mount-on-terminal" design, which allows direct and compact integration onto the battery's positive stud. This significantly simplifies wiring and reduces failure risks associated with multiple connections or excessively long cables between the battery and the protection point.

This type of fuse is particularly recommended for recreational boats where space is often limited. It is ideal for protecting equipment such as a 500W to 750W inverter, a small bow thruster, or a moderate-power windlass, where a peak current of 80A will not be exceeded during normal operation. For installation, it is crucial to ensure a clean and tight connection on the battery terminal to avoid overheating or voltage drop. While it provides targeted protection for a single circuit, it is essential to integrate it into a well-dimensioned and protected electrical system with circuit breakers or other fuses for secondary circuits.

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MRBF 80 A terminal fuse

20,94€

20,94€ ~~22,92€~~

Frequently Asked Questions

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What is an MRBF terminal fuse and what is it used for?

The MRBF (Marine Rated Battery Fuse) terminal fuse is a circuit protection device designed to be mounted directly on the battery terminal stud. It protects high-current circuits from overload or short circuits by interrupting the current flow to prevent damage to equipment and cables. Its compact design reduces cable length and overall clutter in the marine electrical system.

What is the rated current of this Blue Sea Systems MRBF fuse?

This Blue Sea Systems MRBF terminal fuse has a rated current of 80 amperes (80A). This means it is designed to protect circuits where the current does not exceed this value during normal operation.

What are the advantages of an MRBF fuse compared to traditional inline fuses?

The main advantages of an MRBF fuse are:

Compact installation: It mounts directly on the battery terminal, eliminating the need for a separate fuse holder and additional cables between the battery and the fuse holder.Reduced connection points: Fewer connections mean increased reliability and fewer failure risks.Immediate protection: By being positioned directly at the power source, it provides fast and effective circuit protection.Reduced footprint: Its integrated design saves space in marine electrical installations.

For which marine applications is this MRBF 80A fuse recommended?

This MRBF 80A fuse is suitable for securing high-current marine equipment. It is commonly used to protect:

Bow thrusters.Winch motors.Medium-sized power converters.It can also serve as the main protection for a single high-current circuit or as secondary protection for a multi-circuit distribution panel.

Is this fuse compatible with all types of battery terminals?

The MRBF fuse is designed to be mounted on standard battery terminal studs. It is generally compatible with M8 or 5/16 inch battery terminal studs, which are the most common sizes in marine applications. It is important to check the size of your battery stud to ensure perfect compatibility.