Siemens 3RT1025-1AT60 Electromechanical Power Contactor

Siemens 3RT1025-1AT60 is a Sirius series electro-mechanical power contactor engineered for three‑phase motor control. This three-pole device is rated for AC-3 duty and handles up to 7.5 kW at 400 V, with a maximum main circuit voltage of 600 V AC and operation at 60 Hz. With frame size S0 and screw-terminal connections (SCR), it provides a robust, compact solution for switching three‑phase motors in industrial equipment. The 3RT1025-1AT60 is commonly used for motor control in industrial machinery where reliable start/stop control is required, and its three-pole configuration makes wiring straightforward for standard three-phase installations. For installations requiring a screw-terminal power contactor in the S0 size class, this model offers a balance of power handling and compact footprint, typical of Siemens Sirius contactors. Being part of the Sirius 3RT family, it is designed for reliable integration in panel-mount applications and is commonly used where a compact, high‑reliability motor-controlling solution is required.