Siemens AG Relays - Contactors (Electromechanical) 3RT20261BM40

The 3RT2026-1BM40 is a three-pole power contactor for AC-3 applications, rated at 25 A at 400 V and 11 kW, with one normally open and one normally closed auxiliary contact. It uses a screw terminal interface and is sized as S0. The control coil operates on 220 V DC with an operating range of 0.8 to 1.1 times the rated voltage. The contactor withstands up to 6 kV surge voltage in both main and auxiliary circuits, supports operation at altitudes up to 2000 m, and functions in ambient temperatures from -25 °C to +60 °C. Mechanical life is rated at 10 million cycles, and it meets IP20 protection with finger-safe front access. It is suitable for safety-related switching off and has a T1 value of 20 years per IEC 61508. The failure rate is 100 FIT under low demand conditions per SN 31920.