The Siemens SIRIUS 3RT1 series is a power contactor for switching motors. It has a size of S12. It has current rating of 690 A. The design of surge suppressor is with varistor. The type of electrical connection for main current circuit is through bus bar connection and for auxiliary and control current circuit is through screw type terminal. They offer convincing performance from a compact design with high contact reliability. They can be combined with a variety of other components in the load feeder. The contactors offer the best connection to the automation level for every application direct or via PLC input. The contactor are climate-resistant and approved for worldwide use e.g. IEC and UL/CSA.

Mounting type is screw fixing
Ambient operating temperature is -25 to +60 °C