Siemens 3RT2025-1AB00 Sirius 3RT Series Power Contactor

Siemens 3RT2025-1AB00 Sirius power contactor is a 3-pole device in the SIRIUS 3RT series, designed for motor control in AC-3e/AC-3 circuits. It handles 17 A and up to 7.5 kW at 400 V, with a 24 V AC coil at 50 Hz, enabling reliable start/stop of three‑phase motors. The main contacts are rated for AC-3 operation and it includes an auxiliary contact set of 1 normally open and 1 normally closed contact. The unit uses screw-terminal connections and is sized for frame size S0 with upright mounting, making it suitable for compact control panels. This contactor provides a compact, 3‑pole solution for motor switching in industrial control contexts where a 24 V control signal is used, aligning with typical Sirius line configurations for replacing older starters or integrating into new motor control schematics.