The AIRPAX/Sensata 209/219/229/249/279 series hydraulic magnetic circuit protectors offer a robust solution for branch circuit protection. These circuit breakers combine power switching with accurate and reliable protection in a compact, single or multi-pole unit, ideal for applications like EDP, air conditioners, panel boards, and lighting controls. Utilizing the hydraulic-magnetic principle, these protectors adapt to local conditions, minimizing nuisance tripping. They withstand high pulses without affecting normal delay curves, ensuring consistent performance and safety.