Siemens 3RT2017-1BB42 3 Pole Power Contactor

Siemens 3RT2017-1BB42 is a Sirius three-pole power contactor designed for AC-3 duty, capable of switching three-phase loads at up to 400 V with a rated main current of 12 A and a main-circuit rating of 5.5 kW at 400 V, making it suitable for starting and controlling modestly sized motors in automation panels. The device is actuated by a 24 V DC control coil and includes one normally closed auxiliary contact for signaling, all housed in the compact S00 size with screw-terminal connections for straightforward wiring and reliable conductor retention. As a member of the Sirius 3RT2 family, it integrates with Siemens control gear and accessories and is intended for motor-control and other inductive loads in industrial automation. Key specs include three-pole construction, 12 A Ie, 5.5 kW at 400 V, AC-3 operation, 24 V DC coil, 1 NC auxiliary contact, screw terminals, and the S00 form factor.