The Airpax™ AP series are fully sealed, magnetic circuit protectors designed to combine power switching with accurate and reliable circuit protection. These protectors offer inverse time delays and a “trip free” action, ensuring the circuit opens even when the handle is held in the ON position. Available in DC, 50/60Hz, or 400Hz versions, they cater to diverse application requirements. The AP series is suitable for communication, navigation, aircraft instrumentation, radar, and power supplies. The UP series, with UL and CSA certification, is approved for operation at various voltages and currents. The AP-MIL protectors, produced according to MIL-PRF-39019, undergo rigorous testing to maintain their Qualified Products Listing (QPL). Multi-pole configurations offer flexibility for protecting multiple circuits simultaneously, with options for series, shunt, or relay combinations.