The AIRPAX/SENSATA 219-3-27571-1 is a hydraulic magnetic circuit protector within the 209 series family. It offers a compact, single or multi-pole unit ideal for branch circuit applications like EDP, air conditioners, panel boards, and lighting controls. Utilizing the hydraulic-magnetic principle, it adapts to local environments and minimizes nuisance tripping. The protector withstands high pulses without affecting normal delay curves, providing robust and reliable protection.