The Airpax/Sensata 209, 219, 229, and 249 series hydraulic-magnetic circuit protectors provide a combination of power switching and reliable circuit protection in a compact design. Utilizing the hydraulic-magnetic principle, these protectors adapt to local conditions and minimize nuisance tripping. They are suitable for a wide range of applications including EDP, air conditioners, panel boards, and lighting controls. The 219 variant is specifically designed for manual controller applications and complies with UL Standard 508.