The AIRPAX / SENSATA 219-3-1REC4-42F-4-9-100-H is a hydraulic magnetic circuit protector within the 209 series family. It offers a compact, single or multi-pole unit for power switching and accurate circuit protection. Utilizing the hydraulic-magnetic principle, it adapts to local applications and environments, making it suitable for EDP, air conditioners, panel boards, and lighting controls. The common-trip construction ensures that all poles trip simultaneously in case of an overload in any pole. It withstands high pulses without tripping and is available with various configurations and terminal styles to meet specific application needs.