The AIRPAX / SENSATA 279-1-1REC4-52-9-9-70-H is a hydraulic magnetic circuit protector within the 209 series, offering a compact, single or multi-pole unit for power switching and circuit protection. Ideal for applications like EDP, air conditioners, panel boards, and lighting controls, this circuit breaker utilizes the hydraulic-magnetic principle to adapt to various environments. Temperature conditions are not a concern, and the magnetic ampere turn principle minimizes nuisance tripping. It's designed to withstand high pulses without derating protection and is available with various configurations and terminal styles to meet specific application needs.