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. Utilizing the hydraulic-magnetic principle, they adapt to local applications and environments, minimizing nuisance tripping due to temperature variations. The 209 family is ideal for a wide range of applications including EDP, air conditioners, panel boards, and lighting controls, and is available with various configurations and terminal styles to meet specific needs. The inertial delay feature is standard for 50/60Hz units, providing enhanced protection against inrush currents.