Series 187 marine rated circuit breaker (MRCB)
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Series 187 marine rated circuit breaker (MRCB)

The Series 187 Marine Rated Circuit Breaker features a manual reset with switchable function and is single pole thermal type.


  • Single Pole Thermal Type Breakers  
  • Applications :Typically used in DC power systems in marine applications (as a main or branch circuit breaker), truck and bus systems, RV systems, add-on protection for accessories, lift gates, etc. This unit is external ignition protected and weatherproof. 
  • Rating : 25-150A, 48Vdc 
  • Interrupt Rating: Main Breaker Protection Interrupt Rating (5kA@ 14Vdc, 3kA@28Vdc and 1.5kA@ 48Vdc). 
  • Operating Temperature Rating: –40°F (–40°C) to 185°F (85°C) 
  • Storage Temperature Rating: –40°F (–40°C) to 260°F (125°C) 
  • Materials: Black UL-rated 94V0 thermoset plastic body. Cover and lever are UL-rated 94V0 thermoplastic 
  • Marking: Standard marking includes amp/volt ratings. Custom markings also available