The Airpax™ AP series are fully sealed, magnetic circuit protectors designed to combine power switching with accurate and reliable circuit protection. Unlike thermal protectors, the AP maintains a consistent trip current across a wide temperature range. Available in DC, 50/60Hz, or 400Hz versions with various delays, these protectors are adaptable to specific application requirements. The 'trip-free' action ensures the circuit won't remain closed during an overload, even with the handle in the ON position. The AP/UP series, UL recognized and CSA certified, is suitable for a range of voltages and currents. AP-MIL protectors adhere to MIL-PRF-39019 standards, ensuring a rigorous production and testing program. Typical applications include communication, navigation, aircraft instrumentation, radar, and power supplies.