Bussmann CB185-50 CB185 Series Automotive Circuit Breaker (Plug In Mounting, 50 Amps, Blade Terminal Connection) Type III switchable, waterproof, flush mount manual reset circuit breakers with 14-28 threaded stud terminals with SEMS nuts installed, and black reset lever High amp circuit breakers are typically used in auxiliary and accessory circuits for trucks, buses, RV's and marine applications All high amp circuit breakers comply with the SAE J1117 standard for ignition protection All high amp circuit breakers also have applications in battery charging systems that use battery isolators to manage and protect batteries in multi-battery installations