The Airpax 209 series hydraulic magnetic circuit protectors combine power switching with accurate and reliable circuit protection in a compact, single or multi-pole unit. Utilizing the hydraulic-magnetic principle, these protectors adapt to local applications and environments, minimizing nuisance tripping due to temperature variations. They are suitable for branch circuit applications such as EDP, air conditioners, panel boards, and lighting controls. The 209 family offers a variety of configurations and terminal styles to meet diverse application needs, including options for manual controller, supplementary protection, and special construction applications. The design withstands high pulses without tripping, ensuring robust protection.