187 Series 150 Amp Thermal Circuit Breaker | Blue Sea 7148

187 Series 150 Amp Thermal Circuit Breaker | Blue Sea 7148

Blue Sea Systems 187 Series 150 Amp Thermal Circuit Breaker 7148

The Blue Sea 7148 187 Series Thermal Circuit Breaker offers a combined solution for switching and circuit protection in one compact, surface-mount device. Rated for 150 amps DC with a maximum operating voltage of 48 volts, it features a bright yellow reset lever for clear indication of an open circuit, ideal for protecting main circuits in large battery banks. Its trip-free design ensures it cannot remain on during fault conditions, enhancing safety. With interrupt capacities up to 5000 amps at 12 volts DC, it provides robust protection against short circuits. The breaker is designed to accept heavy-duty wiring up to 1/0 AWG via 5/16-18 terminal studs and includes recessed mounting holes for a flush, neat installation using #10 (M5) screws. Waterproof and IP66 rated, it withstands water spray and dust ingress, making it suitable for harsh marine environments. Certified to SAE J1171 ignition protection standards and CE marked, this breaker ensures reliable, safe operation aboard gasoline-powered vessels.

Surface mount thermal circuit breaker combines switching & circuit protection into one device.

• Blue Sea 187 series surface mount circuit breaker
• 150 amps DC rating
• Bright yellow reset lever for visual identification of open circuit
• Ideal for main circuit protection of large size battery banks
• Combines switching and circuit protection into a single device
• Trip-free design cannot be held ON during fault current condition
• Not to be used where high inrush currents are expected
• Type III class switchable/manual reset
• 48 volts DC maximum voltage
• 5000 amps interrupt capacity @ 12 volts DC
• 3000 amps interrupt capacity @ 24 volts DC
• 1500 amps interrupt capacity @ 42 volts DC
• 5/16-18 terminal studs accepts up to 1/0 AWG heavy duty wire
• Waterproof for use in areas that may experience water spray
• Recessed mounting holes for clean appearance
• #10 (M5) mounting screw size
• 2.323 in. width x 3.439 in. height x 1.797 in. depth
• SAE J1171 ignition protected safe for installation aboard gasoline powered boats
• CE marked
• IP66 protected against ingress of dust and water from heavy seas