The Siemens contactor assembly for star-delta has size S0 screw terminals electrical and mechanical interlock 3 NO + 3 NC integrated contactor assembly for star-delta start SIRIUS 3RA24 for the soft starting of three-phase asynchronous motors.
The 3RA24 contactor assembly for star-delta starting is a proven and factory-fitted combination of three 3RT2 contactors which are already fully wired and interlocked both mechanically and electrically. The function module with integrated control logic and time setting, which is also included, replaces the complete wiring in the control circuit. This assembly climate-resistant, approved for worldwide use (e.g. IEC and UL/CSA) and are IE3/IE4-ready.
The 3RA24 contactor assembly for star-delta (wye-delta) starting are available with AC and DC operation in sizes S00 to S3.

Mounting type is screw and Snap-On mounting onto 35 mm standard mounting rail
Protection class is IP20