The Airpax™ AP series are fully sealed, magnetic circuit protectors designed to combine power switching with accurate and reliable circuit protection. These protectors feature 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, offers similar functionality and is approved for operation at various voltage and current levels. For petrochemical applications, an optional FM approval is available. The AP-MIL protectors, produced according to MIL-PRF-39019, undergo rigorous testing to maintain their Qualified Products Listing (QPL).