Bussman MRCB Marine Hi-Amp DC Circuit Breaker, 200 Amp, Surface Mount, Manual Switchable reset, Buss Brand, 48 VDC maximum. Buss part number 187200F CB-187F-200. The manual switch lever on this breaker can be used as an on/off switch.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer.