M39019/03-248S is a two-pole magnetic low-power sealed trip-free circuit breaker designed for aerospace and defense applications per MIL-PRF-39019/3H. This circuit breaker is rated for a current of 10.0 amperes with standard delay time characteristics and operates at a maximum voltage of 50 V dc or 240 V ac at 60 Hz and 400 Hz. The device features a maximum resistance of 0.018 ohms at dc, 0.021 ohms at 60 Hz, and 0.024 ohms at 400 Hz, with high inrush capability of 800 percent at 60 Hz and dc, and 1,400 percent at 400 Hz. The circuit breaker is sealed and trip-free, providing reliable overcurrent protection in demanding aerospace, military, and industrial environments where compact, dependable circuit protection is essential.