Blue Sea 7139 187 - Series Thermal Circuit Breaker - 50Amp [7139]

The 187-Series Thermal Circuit Breakers are surface mount devices. This 50 Amp circuit breaker (PN: 7139) combines switching and circuit protection in one. All components meet SAE J1171 external ignition protection requirements, making it ignition protected and safe for gasoline powered boats. It features a clear single lever operation, 'Trip Free' design, waterproof construction, recessed mounting holes for a clean look, large clearance around terminal studs for heavy gauge wire lugs, robust 5/16 terminals for high torque connections, and a large lever indicating trip status. 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 @12 Volts DC, 3,000 Amperes @24 Volts DC, 1,500 Amperes @42 Volts DC. Operating Temperature Range: -25°C to +82°C. WARNING: This product can expose you to chemicals including di(2 - ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Amperage: 50a. Box Dimensions: 2'H x 5'W x 8'L WT: 0.6 lbs. UPC: 632085171391.

Using this circuit breaker is quite straightforward. First, find a suitable surface to mount it on, making sure it's in a location within the operating temperature range of -25°C to +82°C. The recessed mounting holes make the installation look clean. Connect heavy gauge wire lugs to the terminal studs, as there's large clearance around them to easily fit them. The robust 5/16 terminals provide strong connections. The single lever is used to operate the breaker. When there's a fault current, the 'Trip Free' design will ensure it trips and won't stay 'ON'. The large lever shows the trip status, whether it's vertical or horizontal. As for maintenance, keep it dry since it's waterproof, but still check regularly for any signs of damage. Be aware that this product can expose you to harmful chemicals. If you're in California, check P65Warnings.ca.gov for more information.