Blue Sea Systems 7135 187 Series DC Circuit Breaker - Surface Mount, 25 Amp

The Blue Sea Systems 7135 is a 25-amp thermal DC circuit breaker from the 187 Series, designed for surface mount installation in marine and automotive electrical systems. This heavy-duty circuit breaker combines switching and circuit protection into a single waterproof device, making it ideal for use aboard boats, RVs, and other vehicles where reliable overcurrent protection is essential.

Key Features:

• Combines manual on/off switching with automatic circuit protection in one compact unit
• Trip-free design prevents the breaker from being held in the ON position during fault conditions
• Ignition protected construction meets SAE J1171 requirements—safe for gasoline-powered vessels
• Waterproof housing protects internal components from moisture and corrosion
• Clear single-lever operation with visual trip status indication in vertical or horizontal orientation
• Recessed mounting holes provide a clean, professional appearance
• Robust 5/16-inch terminal studs with ample clearance accept heavy-gauge wire lugs and high-torque connections
• Thermally responsive bi-metal blade mechanism for reliable overcurrent protection

Technical Specifications:

• Rated Current: 25 Amps
• Circuit Breaker Class: Type III - Switchable/Manual Reset - Trip Free
• Voltage Rating: 48 Volts DC Maximum
• Interrupt Rating: 5,000 Amperes @ 12V DC, 3,000 Amperes @ 24V DC, 1,500 Amperes @ 42V DC
• Case Material: Thermoset polyester for durability and heat resistance
• Operating Temperature Range: -25°C to +82°C (-13°F to 180°F)
• Terminal Size: 5/16-inch studs

This circuit breaker is an essential safety component for protecting electrical circuits in marine, RV, automotive, and powersports applications. The surface mount design allows for easy installation on panels, bulkheads, or any flat surface where circuit protection and switching control are needed.