Circuit breaker 3VA1 IEC Frame 250 Switching capacity class S Icu=36kA @ 415V 4-pole, system protection TM240, ATAM, In=250A overload protection Ir=175A...250A short-circuit protection Ii=5...10 x In N-conductor protection 100% screw flat connection. The SENTRON 3VA1 compact circuit breaker provides effective system protection through safe disconnection in overload and short-circuit situations. The 3VA compact circuit breakers set standards in flexibility and modular variety while requiring minimal space. They are available in 1-, 2-, 3-, and 4-pole versions with various rated currents for installation in fixed mount as well as plug-in/slide-in technology. The modular and easy-to-install accessories with diverse functions are consistent and uniform across all sizes and series of the 3VA compact circuit breakers. SENTRON 3VA compact circuit breakers - One system. For all applications.