The Airpax/Sensata 209 series hydraulic magnetic circuit protectors combine power switching with accurate and reliable circuit protection in a compact, single or multi-pole unit. Ideal for branch circuit applications like EDP, air conditioners, panel boards, and lighting controls, these protectors utilize the hydraulic-magnetic principle to adapt to local conditions and minimize nuisance tripping. They withstand high pulses without affecting normal delay curves, offering robust protection for a wide range of industrial and commercial applications. Available in various configurations and terminal styles, the 209 series provides versatility and reliability for diverse electrical systems.