MF1-B-34-615-1-BB6-B-C is a single-pole hydraulic-magnetic circuit breaker from Carling Technologies' M-Series, designed for DC and 50/60Hz AC circuit protection with medium time delay characteristics. This series trip circuit breaker features a 15A current rating with a baton actuator style and 1/2-32 threaded bushing for panel mounting. The unit includes a black bushing color, black actuator, knurled nut with bright nickel finish and locking ring for panel hardware, and ON-OFF legend plate. It is UL Recognized and CSA Certified, making it suitable for industrial, marine, and commercial applications requiring reliable overcurrent protection with controlled trip timing.