MS1-B-34-625-2-1CB-A-17C is a single-pole hydraulic-magnetic circuit breaker designed for compact, rugged protection in mission-critical applications. The device features a 25 A current rating with dual voltage capability (65 VDC / 240 VAC), medium time delay characteristics, and a sealed metal toggle actuator that meets IP68 ingress protection and MIL-PRF-39019F compliance when panel mounted. It incorporates a push-on 0.250 inch tab (QC) terminal connection and is compliant with MIL-PRF-55629 and MIL STD 202 standards. The breaker is ideal for vehicles, communication equipment, generators, and power supplies where reliable overcurrent protection and environmental sealing are essential.