Blue Sea Systems 7136 187 Series Surface Mount DC Circuit Breaker 30 Amp

The Blue Sea Systems 7136 is a 30-amp thermal circuit breaker from the 187 Series, designed for surface mount installation in marine DC electrical systems. This switchable circuit breaker combines switching and circuit protection into a single, compact device, making it ideal for protecting critical circuits on boats, RVs, and other 12V-48V DC applications.

Key Features:

• Trip-free design cannot be held in the ON position during fault conditions for enhanced safety
• Thermally responsive bi-metal blade provides reliable overcurrent protection
• Waterproof construction for harsh marine environments
• Ignition protected components meet SAE J1171 requirements - safe for gasoline-powered vessels
• Clear single-lever operation with large handle for easy visibility and vertical/horizontal orientation
• Robust 5/16-inch terminal studs with large clearance accept heavy gauge wire lugs
• Recessed mounting holes provide clean, professional appearance
• Type III switchable manual reset circuit breaker

Technical Specifications:

• Amperage Rating: 30 Amps
• Voltage Rating: 48 Volts DC Maximum
• Interrupt Rating: 5,000A at 12V DC, 3,000A at 24V DC, 1,500A at 42V DC
• Case Material: Thermoset polyester for durability and electrical isolation
• Operating Temperature Range: -25°C to +82°C (-13°F to 180°F)
• Mounting: Surface mount with recessed screw holes

This circuit breaker is engineered for marine-grade reliability and meets the demanding standards required for electrical systems on boats and other watercraft. The high interrupt ratings ensure safe operation even under severe fault conditions, while the waterproof design protects against moisture and corrosion.