The AIRPAX/SENSATA 209, 219, 229, 249, and 279 series hydraulic magnetic circuit protectors combine power switching with reliable circuit protection in a compact, single or multi-pole unit. Ideal for branch circuit applications such as EDP, air conditioners, panel boards, and lighting controls, these protectors utilize the hydraulic-magnetic principle, adapting to local environments and minimizing nuisance tripping. They withstand high pulses without affecting normal delay curves, offering robust protection for various industrial applications. Available with screw terminals, stud, or solderless connectors and front or back connected terminal styles, these circuit protectors provide versatile solutions for diverse electrical needs.