Blue Sea Systems 187-Series Thermal Circuit Breaker, 40A 48V DC, Panel Mount

Ensure robust electrical protection and reliable switching for your marine and vehicle applications with the Blue Sea Systems 7038 187-Series Thermal Circuit Breaker. This high-performance panel-mount breaker combines essential circuit protection with a manual reset switch, making it an ideal choice for demanding DC electrical systems. Its ignition-protected design, conforming to SAE J1171, guarantees safe installation and operation aboard gasoline-powered boats. Upgrade your electrical system with this durable, marine-grade component today for enhanced safety and performance.

Key Benefits & Features:

• Integrated Protection & Switching: Functions as both a circuit breaker and a manual reset switch in a single, convenient device.
• Advanced Thermal Design: Utilizes a thermally responsive bi-metal blade to protect against overcurrent conditions, even in varying temperatures.
• Ignition Protected: Meets SAE J1171 external ignition protection requirements, ensuring safe operation on gasoline-powered boats.
• Waterproof Durability: Rated IP66, providing robust protection against water from heavy seas and harsh environments.
• 'Trip Free' Mechanism: Prevents the breaker from being held in the 'ON' position during a fault current, enhancing safety.
• Clear Status Indication: Features a large, single lever with vertical/horizontal orientation for easy identification of trip status.
• Effortless Installation: The round, self-trimming case with recessed mounting holes simplifies installation using a standard hole saw, eliminating the need for additional trim bezels.
• High-Torque Connections: Robust 5/16"-18 terminals accommodate heavy gauge wire lugs, ensuring secure and high-conductivity connections.

Specifications:

• Amperage: 40 Amps
• Voltage Rating: 48 Volts DC Maximum
• Interrupt Rating: 5,000 Amperes @ 12V DC; 3,000 Amperes @ 24V DC; 1,500 Amperes @ 48V DC
• Circuit Breaker Class: Type III - Switchable / Manual Reset - Trip Free
• Operating Temperature Range: -40°C to +85°C (-40°F to +185°F)
• Case Material: Thermoset Polyester

Compatibility & Pairings:

Designed for integration into a wide range of DC marine and automotive electrical systems, providing essential protection for various loads including windlasses, inverters, and accessory circuits.