Siemens Industry, Inc. 3RT1046-1B AC Contactor

Siemens Sirius 3RT1046-1B is a three-pole power contactor in the S3 frame with screw-terminal connections and three normally open main contacts for three‑phase motor control. In AC‑3 duty at 400 V, it is rated 95 A (45 kW), with AC‑1 duty up to 120 A, enabling reliable switching of motors and other high‑current loads. It supports insulation voltages up to 1000 V and follows the Sirius family’s compact, modular design; variant models in the 3RT1046 line include versions with a 24 V DC coil (for example the 3RT1046‑1BB44), while preserving the 3 NO main contacts and size S3 form factor. This contactor is commonly used in industrial automation and panel installations requiring robust motor switching and easy integration with other Sirius control components.