Siemens 3RT2025-1BB40-1AA0 Three-Phase Power Contactor

Siemens 3RT2025-1BB40-1AA0 is a SIRIUS 3RT three-pole power contactor designed for AC-3e/AC-3 motor-control duties, delivering up to 7.5 kW at 400 V with a 17 A rating in a 3-pole configuration. The coil is 24 V DC, enabling control from standard automation circuits, and it includes one normally open and one normally closed auxiliary contact for signaling or interlocking. This unit uses screw-terminal connections, is sized S0, and is intended for upright mounting in control panels. With a 3-pole arrangement and a 24 V DC coil, it is suitable for starting and stopping small to mid-size three-phase motors in applications such as conveyors, fans, pumps, and general machine control where reliable switching and status signaling are needed. The product is catalogued as 3RT2025-1BB40-1AA0 and is part of Siemens' SIRIUS 3RT contactor family, confirming its 3-pole configuration, 400 V rating, 17 A current rating, 7.5 kW power rating, 24 V DC coil, and 1 NO + 1 NC auxiliary contact.