The AIRPAX/Sensata 209, 219, 229, and 249 series hydraulic magnetic circuit protectors offer a robust solution for branch circuit protection. These breakers combine power switching with accurate, reliable protection in a compact, single or multi-pole unit, suitable for applications like EDP, air conditioners, panel boards, and lighting controls. Utilizing the hydraulic-magnetic principle, the 209 family adapts to local applications and environments, minimizing nuisance tripping due to temperature variations. The unique inertial delay feature is standard for 50/60Hz units, providing protection against inrush currents from transformers, lamps, and capacitive filters. Available with various terminal styles and configurations, these circuit protectors provide versatility for a wide range of industrial applications.