The AIRPAX/SENSATA 209, E-Frame circuit breaker combines power switching with accurate, reliable circuit protection in a compact single or multipole unit. This family of circuit breakers is available in one through six pole assemblies with various configurations and terminal styles to meet diverse application needs. Utilizing the hydraulic-magnetic principle, these protectors adapt to local environments and minimize nuisance tripping due to temperature variations. They are suitable for branch circuit applications such as EDP, air conditioners, panel boards, and lighting controls, and are designed to withstand high pulses without affecting normal delay curves.