The AIRPAX / SENSATA M39019/01-250S is a magnetic, low-power, sealed, trip-free, one-pole circuit breaker meeting MIL-PRF-39019 specifications. It's designed for use in a wide range of military and industrial applications requiring reliable circuit protection. The device incorporates a trip-free mechanism, ensuring automatic interruption of the circuit under fault conditions. Dimensions are detailed in Figure 1, and various dash numbers (e.g., 200, 300, 211) correspond to specific current ratings, time delays, and resistance/impedance characteristics as outlined in Table I. Marking can appear on any surface except the mounting surface. This circuit breaker provides a robust and dependable solution for protecting sensitive electronic equipment.