Blue Sea Class T Fuse Block AMRB-5502 Mount Insulating Cover

Description

Product Overview

The Blue Sea Class T Fuse Block AMRB-5502 is engineered to meet the rigorous demands of marine and industrial electrical systems. Constructed from high‑quality tin‑plated copper, the block offers superior conductivity and resistance to corrosion, ensuring long‑term reliability even in harsh saltwater environments. Its clear insulating cover not only provides visual confirmation of fuse status but also complies with ABYC and USCG safety standards, making it a trusted component for critical power distribution applications.

Designed for a maximum current rating of 400 A and a voltage rating of 160 V DC, this fuse block can safely protect large battery banks, inverter systems, and auxiliary circuits. The robust 3/8‑16 stud terminals accommodate ring terminals for wire sizes up to 4/0 AWG, allowing for flexible installation configurations. Two #8 accessory terminals on each end provide additional connection points for monitoring or auxiliary devices, enhancing system versatility.

Physical dimensions of 8.98 × 7.24 × 3.07 inches and a weight of just 0.52 kg make the AMRB-5502 a compact yet powerful solution. The panel‑mount design utilizes standard 1/4‑in (M6) screws, simplifying integration into existing control panels, switchboards, or custom enclosures. The block’s sturdy construction, combined with a torque rating of 190 in‑lb (21.47 Nm), ensures secure fastening and optimal heat dissipation during high‑current operation.

Beyond its technical specifications, the AMRB-5502 reflects Blue Sea Systems’ commitment to quality and safety. Each unit undergoes rigorous testing to verify performance under extreme conditions, and the product is backed by a comprehensive warranty and responsive customer support. Whether outfitting a new vessel, upgrading an offshore platform, or maintaining a remote power system, this fuse block delivers the confidence and durability required for mission‑critical applications.

Usage

Marine electricians and system integrators frequently rely on the AMRB-5502 for protecting high‑capacity DC circuits on yachts, commercial vessels, and offshore rigs. Its ability to handle up to 400 A makes it suitable for safeguarding inverter inputs, battery charger feeds, and auxiliary power distribution panels. The clear insulating cover allows operators to quickly verify fuse integrity without disassembly, reducing downtime during routine inspections.

In industrial settings, the fuse block serves as a central protection point for large‑scale battery banks, renewable energy storage systems, and heavy‑duty motor drives. The tin‑plated copper terminals provide low resistance paths, minimizing voltage drop and heat buildup, which is essential for maintaining efficiency in high‑current environments. Installation is straightforward thanks to the panel‑mount style, enabling seamless integration into existing control cabinets or custom‑fabricated panels.

For remote or off‑grid applications, the AMRB-5502 offers a reliable safeguard against short circuits and overloads, protecting valuable equipment from damage. Its robust construction tolerates temperature fluctuations and vibration, making it an ideal choice for mobile power units, emergency generators, and field‑deployed communication systems where reliability is paramount.

Why Choose Us

Choosing the Blue Sea Class T Fuse Block means selecting a product that combines industry‑leading materials with proven design. The tin‑plated copper construction not only enhances conductivity but also provides a protective layer against oxidation, extending the service life of the block even in corrosive marine atmospheres. This attention to material quality sets our fuse blocks apart from generic alternatives that may use inferior alloys.

Our commitment to safety is reflected in the clear insulating cover, which meets stringent ABYC and USCG requirements. This feature enables quick visual inspection of fuse status, reducing the risk of unnoticed failures that could lead to system downtime or hazardous conditions. Additionally, the block’s rating of 400 A at 160 V DC aligns with the specifications of many leading inverter manufacturers, ensuring compatibility across a wide range of power solutions.

Beyond the product itself, Blue Sea Systems provides dedicated technical support and a responsive warranty program. Our engineering team is available to assist with installation guidance, troubleshooting, and customization options, ensuring that customers receive the full value of their investment. When you purchase the AMRB-5502, you gain not only a high‑performance component but also a partnership with a trusted industry leader.

Key Features

• Robust 400 A current rating ensures reliable protection for high‑power DC systems.
• Tin‑plated copper terminals provide excellent conductivity and corrosion resistance.
• Clear insulating cover meets ABYC/USCG standards for easy visual inspection.
• Panel‑mount design with standard 1/4‑in screw holes simplifies installation in any enclosure.
• Dedicated customer support and warranty give peace of mind for critical applications.

FAQ

What size wire can be used with this fuse block?

The AMRB-5502 accepts wire up to 4/0 AWG on its 3/8‑16 stud terminals, allowing for flexible connections to large battery banks and high‑current circuits while maintaining a secure, low‑resistance connection.

Is the fuse block compatible with both marine and land‑based systems?

Yes, the block is designed to meet ABYC and USCG marine standards while also being suitable for industrial and off‑grid applications. Its 160 V DC rating and robust construction make it versatile for a wide range of environments.

How does the clear insulating cover improve safety?

The transparent cover allows operators to quickly verify whether a fuse is intact or has blown without removing the block from the panel. This visual check reduces inspection time and helps prevent accidental exposure to live components, enhancing overall system safety.

Can I add additional accessories to the fuse block?

Yes, the block includes two #8 accessory terminals on each end, providing convenient points for monitoring devices, auxiliary switches, or additional protective components, expanding the functionality of your power distribution system.

What warranty does Blue Sea Systems offer for this product?

Blue Sea Systems provides a limited warranty that covers manufacturing defects and ensures the product performs as advertised. Our technical support team is also available to assist with installation, troubleshooting, and any questions you may have after purchase.