The AIRPAX/Sensata 209/219/229/249/279 series hydraulic-magnetic circuit protectors offer a robust solution for branch circuit protection. Utilizing the hydraulic-magnetic principle, these protectors adapt to local conditions, minimizing nuisance tripping due to temperature variations and withstanding high pulses without affecting performance. Available in various configurations and terminal styles, they are suitable for applications such as EDP, air conditioners, panel boards, and lighting controls. The 249 Power Selector Breaker System allows selection of multiple power systems, enhancing flexibility and reliability.