Siemens 3RT2017-1BB42 SIRIUS 3-Pole Contactor 9 A 24 V DC Coil

The Siemens 3RT2017-1BB42 is a SIRIUS series 3-pole contactor designed for reliable switching of AC motors and general loads in automation and control panel applications. It is rated for 9 A in AC-3 utilization category, providing dependable performance for motors up to approximately ~4 kW at 400 V AC. This contactor includes an integrated auxiliary contact block (1NO+1NC) for signalling and control logic extension without additional accessories, helping simplify panel design. The 24 V DC coil enables direct drive from common control supplies, and the compact S00 frame fits standard control cabinet layouts with screw-clamp terminals for secure wiring. Built to comply with IEC/EN contactor standards, the 3RT2017-1BB42 delivers long electrical and mechanical life, making it ideal for machine control, automation systems, and reliable load switching.