The Siemens 3RT2023-1AL20-Z W96 is a size S0 power contactor rated for AC-3e/AC-3 duty at 9 A, switching 4 kW motor loads on a 400 V three-phase line. The integrated 1 NO + 1 NC auxiliary contact block covers basic feedback and interlocking without needing a separate add-on module. Termination is via screw terminals, which is the expected fit for panel builders working with ferrule-ended control wiring. The S0 frame size keeps the DIN-rail footprint compact — roughly 45 mm wide — so it fits in a standard distribution board without crowding adjacent devices.
RoHS compliance is confirmed since October 2009, and REACH candidate-list disclosure is available on request. No export restrictions apply (AL: N / ECCN: N), so it ships without special licensing.