Blue Sea Systems 187-Series Thermal Circuit Breaker – Surface Mount (40A, PN 7138)
 Compact switchable circuit breaker combining switching and protection in one unit. Features a trip-free design, waterproof build, and ignition protection for safe marine use. Includes large 5/16" terminals, clear lever operation, and recessed mounts for a clean finish.
Specs:
 
 
 Type III Manual Reset (Trip Free)
 
 48V DC max, 5,000A interrupt @12V
 
 Thermoset polyester case
 
 Operating range: -25°C to +82°C
 
 
⚠️ Contains DEHP – may cause cancer or reproductive harm (P65Warnings.ca.gov).