The Airpax/Sensata 209, 219, 229, and 249 series hydraulic magnetic circuit protectors provide robust and reliable circuit protection for a wide range of applications, including EDP, air conditioners, panel boards, and lighting controls. These circuit breakers combine power switching with accurate protection in a compact, single or multi-pole unit. The hydraulic-magnetic principle allows for adaptability to various environments, and the inclusion of inertial delay minimizes nuisance tripping caused by temperature fluctuations or inrush currents. Available with various terminal styles and configurations, these protectors are suitable for both standard and specialized applications.