MB2-B-34-610-1-A21-B-C is a miniature hydraulic-magnetic circuit breaker from the Carling Technologies M-Series, designed for overcurrent protection in DC applications. This 2-pole parallel configuration breaker features a flat rocker actuator (code B), series trip current circuit, and a 10.000A current rating with DC medium time delay (code 34). It includes push-on 0.250 tab (Q.C.) terminals, black actuator color with ON-OFF vertical legend, and black bezel. The unit is UL Recognized and CSA Accepted, making it suitable for communications equipment and general-purpose applications requiring reliable circuit protection with front panel snap-in mounting.