Simply Unbeatable | More Power in Less Space

Thermal circuit breakers provide heavy duty circuit protection for 25 Amp to 80 Amp loads when switching and circuit protection are both required.


  • Single lever operation—clearly visible
  • Trip-free—cannot be held closed after trip
  • Self-trimming case eliminates need for mounting panels or trim bezels
  • Large clearance around terminal studs accepts up to 1/0 AWG lugs
  • Recessed mounting holes for clean appearance
  • Robust 5/16"-18 terminals provide high torque connections


Note: max voltage 48V.  Should you have a 48V nominal battery bank or higher please email us for advice on higher voltage circuit breaker options. 



Bussman Marine Circuit Breaker (choose size)

SKU: BUS-187
  • We are confident that you will be happy with your Bussman Series 187 Marine Circuit Breaker.  However, if you are not completely satisfied items can be returned within 30 days of receipt of purchase subject to a 15% restocking fee. 


    Items must be unused and in the original packaging.  Electrical components that have not been installed may be subject to an additional 5% fee for testing.  Electrical components that have been installed are not returnable.


    Please contact us to generate a Return Merchandise Authorization (RMA) for you to print and include in the package before shipping.  Customer is responsible for return shipping costs.


    If you have any questions at all regarding returns please email us