The AIRPAX/Sensata 209, 219, and 229 series hydraulic magnetic circuit protectors combine power switching with accurate and reliable circuit protection. These protectors utilize the hydraulic-magnetic principle, adapting to local applications and environments while minimizing nuisance tripping due to temperature variations. They are suitable for branch circuit applications such as EDP, air conditioners, panel boards, and lighting controls, and withstand high pulses without affecting normal delay curves. Available with various configurations and terminal styles, these protectors offer versatility for diverse industrial applications.