Switch disconnector for isolation and switching duty
The Siemens SENTRON 3VA1225-1AA42-0JC0 is a 4-pole switch disconnector in an MCCB-style frame, rated for 250 A continuous current (Iu) with a maximum AC operational voltage of 690 V and DC operational voltage of 600 V. It is designed for isolation and switching of loads without overload or short-circuit protection.
Shunt trip and auxiliary switching
This unit ships with a factory-fitted shunt trip (STL) release, allowing remote tripping from a pushbutton, PLC output, or safety relay. The shunt trip coil draws power only during the trip event — no continuous hold current.