The AIRPAX / SENSATA 209 series hydraulic magnetic circuit protectors offer a robust solution for branch circuit protection. These breakers combine power switching with accurate and reliable protection in a compact, single or multi-pole unit, making them suitable for applications like EDP, air conditioners, panel boards, and lighting controls. Utilizing the hydraulic-magnetic principle, the 209 family adapts to various environments, minimizing nuisance tripping due to temperature variations. The inertial delay feature is standard for 50/60Hz units, providing protection against inrush currents from transformers, lamps, and capacitive filters. Available with screw terminals, stud, or solderless connectors, and front or back connected terminal styles, the 209 series provides versatility for diverse industrial applications.