Blue Sea Systems 7046 Thermal Circuit Breaker Panel Mount - 120A

The Blue Sea Systems 7046 is a 120-amp thermal circuit breaker from the 187 Series, designed for panel mount installation in marine DC electrical systems. This robust circuit protection device combines switching and circuit protection functionality into a single, waterproof unit, making it ideal for protecting high-amperage circuits on boats, RVs, and other 12-48V DC applications.

Key Features:

• 120-amp rating with 48 Volts DC maximum capacity
• Trip-free design prevents the breaker from being held in the "ON" position during fault conditions
• Waterproof construction with ignition protection meets SAE J1171 requirements for safe installation on gasoline-powered vessels
• Self-trimming case design eliminates the need for mounting panels or trim bezels
• Round case allows easy installation with standard hole saw
• Clear single-lever operation with visual trip status indication in vertical or horizontal orientation
• Robust 5/16" terminal studs with large clearance accommodate heavy gauge wire lugs and provide high-torque connections
• Recessed mounting holes for clean, professional appearance

Technical Specifications:

• Circuit Breaker Class: Type III - Switchable/Manual Reset - Trip Free
• Type: Thermally responsive bi-metal blade
• Case Material: Thermoset polyester
• Voltage Rating: 48 Volts DC maximum
• Interrupt Rating: 5,000 amperes at 12V DC, 3,000 amperes at 24V DC, 1,500 amperes at 42V DC
• Operating Temperature Range: -13°F to 180°F (-25°C to +82°C)

This panel-mount circuit breaker provides reliable overcurrent protection while serving as a convenient main power switch for high-draw equipment such as windlasses, bow thrusters, inverters, and other heavy-duty marine electrical systems.