The AIRPAX / SENSATA 209 series hydraulic magnetic circuit protectors offer a compact and reliable solution for branch circuit protection. These breakers combine power switching with accurate protection, making them suitable for a wide range of applications including EDP, air conditioners, panel boards, and lighting controls. The hydraulic-magnetic principle minimizes nuisance tripping due to temperature variations, and the inertial delay feature handles inrush currents effectively. The 209 family withstands high pulses without affecting normal delay curves, ensuring consistent protection.