Blue Sea 187-Series Circuit Breaker – Surface Mount 60A (7140)

Description

The Blue Sea Systems 187-Series Circuit Breaker – Surface Mount 60A (7140) is a heavy-duty marine thermal circuit breaker designed to combine manual switching and overcurrent protection in a single device. Suitable for demanding marine DC electrical installations, it helps protect wiring and connected equipment against excessive current while allowing convenient manual operation and reset.

Built for harsh marine conditions, this circuit breaker features waterproof construction and ignition protection for installation aboard petrol-powered boats. It meets SAE J1171 external ignition protection requirements, making it suitable for compatible marine installations when fitted according to the manufacturer’s instructions.

The Type III trip-free mechanism prevents the breaker from being held in the ON position during a fault condition. Its large operating lever provides clear manual control, while the lever’s vertical or horizontal orientation indicates trip status. The surface-mount design allows installation without requiring a recessed panel cut-out, and the recessed mounting holes provide a neat finish.

Robust 5/16″-18 terminal studs support secure, high-torque electrical connections, with generous clearance for heavy-gauge cable lugs.

Key Features

• 60A rated current for suitable marine DC electrical circuits.
• Combines manual switching and circuit protection in one device.
• Waterproof construction for marine environments.
• Ignition protected for installation aboard petrol-powered boats.
• Meets SAE J1171 external ignition protection requirements.
• Type III trip-free mechanism with manual reset.
• Large operating lever with visible trip-status indication.
• Surface-mount installation.
• Recessed mounting holes for a clean appearance.
• Heavy-duty 5/16″-18 terminal studs for secure cable connections.
• Designed for demanding marine electrical applications.

Technical Specifications

• Brand: Blue Sea Systems
• Series: 187-Series
• Manufacturer Part Number: 7140
• Product Type: Marine Electrical Equipment – Surface-Mount Thermal Circuit Breaker
• Rated Current: 60A
• Maximum Voltage: 48V DC
• Mounting Type: Surface mount
• Circuit Breaker Type: Thermally responsive bi-metal blade
• Circuit Breaker Class: Type III – switchable, manual reset, trip-free
• Interrupt Capacity:
  • 5,000A at 14V DC
  • 3,000A at 28V DC
  • 1,500A at 48V DC
• Terminal Stud Size: 5/16″-18
• Terminal Stud Torque: 75 in-lb (8.47 Nm)
• Mounting Hole: Accepts #10 (M5) screw
• Case Material: Thermoset polyester
• Minimum Operating Temperature: -40°C
• Maximum Operating Temperature: 85°C
• Weight: 0.26 kg (0.58 lb)
• Protection Features: Waterproof construction and ignition protection
• Regulatory Compliance: CE marking and SAE J1171 external ignition protection requirements

Applications

• Marine DC electrical systems.
• Boat accessory and equipment circuits.
• High-current electrical distribution.
• Surface-mounted circuit protection installations.
• Protection of appropriately rated marine electrical loads.

Installation Note: The manufacturer advises against using this circuit breaker as a switch for loads with high inrush currents. Select the breaker according to the connected load and wiring capacity. Follow the manufacturer’s installation instructions and specified terminal torque.

The Blue Sea Systems 187-Series Surface-Mount Circuit Breaker 60A provides durable, resettable circuit protection and convenient manual switching for demanding marine electrical installations.