Blue Sea Systems 7443 UL-489 20A Flat Rocker Circuit Breaker for Marine and Vessel Applications

7443 UL-489 Circuit Breaker - 20A Flat Rocker

Suitable for use when UL-489 specifications are required (Navy, Army, or Coast Guard vessels, and other vessels covered under CFR 46).

Specifications:

• Amperage: 20A DC
• Actuator Style: Flat Rocker
• Poles: 1
• Maximum Voltage: 80V DC
• Circuit Breaker Type: Magnetic Hydraulic - Trip Free
• Terminal Type: #10-32 Screw Tin-Plated Brass
• Interrupt Capacity: 10000A

The Blue Sea Systems 7443 UL-489 Circuit Breaker is designed to provide reliable overcurrent protection for marine and vessel electrical systems, meeting stringent UL-489 standards required by Navy, Army, Coast Guard, and other maritime applications. This 20A DC circuit breaker features a flat rocker actuator for easy operation and quick reset, ensuring safety and convenience in demanding environments. Built with a single pole configuration, it is suitable for controlling circuits up to 80V DC, making it ideal for various marine electrical setups. The magnetic hydraulic trip mechanism ensures the breaker trips instantly upon fault detection, preventing damage to connected equipment and wiring. Its #10-32 screw terminal connections are made of tin-plated brass, offering excellent conductivity and corrosion resistance, which is essential for marine conditions. With a high interrupt capacity of 10,000A, this breaker can handle significant short-circuit currents, enhancing overall system safety and reliability. This UL-listed circuit breaker is compact and robust, making it suitable for installation in confined spaces aboard vessels. Its durable construction ensures long-lasting performance even in harsh marine environments, providing peace of mind for vessel operators and maintenance personnel. Whether used in navigation, communication, or power distribution systems, the Blue Sea 7443 breaker delivers dependable protection and operational efficiency. Its compact size and certified compliance make it a versatile choice for professional marine electrical applications, ensuring safety and compliance with industry standards.

Features:

• UL-489 certification for marine and vessel safety standards

• 20A DC amperage suitable for various marine electrical systems

• Flat rocker actuator for easy operation and reset

• Single pole design for straightforward circuit control

• Maximum voltage of 80V DC for versatile applications

• Magnetic hydraulic trip mechanism for fast fault response

• Tin-plated brass #10-32 screw terminals for corrosion resistance

• Interrupt capacity of 10,000A for high short-circuit handling

• Compact and durable construction for harsh marine environments