Switch disconnector 3VA1 IEC Frame 400 4-pole SD100, In=400A without overload protection without short-circuit protection screw flat connection SENTRON 3VA1 molded case circuit breaker as a switch disconnector variant according to IEC 60947-3 for the safe separation of individual system parts from the network. The 3VA molded case circuit breakers set standards in flexibility and modular variety with minimal space requirements. The 3VA1 switch disconnectors are available in 3- and 4-pole versions with various rated continuous currents for fixed installation and plug-in/withdrawable installation. The modular and easy-to-install accessories with a wide range of functions are consistent and standardized for all sizes and series of the 3VA molded case circuit breakers. SENTRON 3VA molded case circuit breakers - one system. For all applications.