3MT8040-1AC23 Siemens Contactor AC-3 40A/18.5kW 400V Size S2 Original Brand New

3MT8040-1AC23

Siemens Contactor AC-3,40A/18.5kW,400V, 1NO1NC, 24 VAC, 50/60 Hz, 3-pole, size S2,screw terminal

Overview

Siemens 3MT8040‑1AC23 is a Size S2 power contactor from the legacy SIRIUS 3RT1 series, engineered for AC-3 motor-control duty, with a rated current of 40 A and capable of handling motors up to 18.5 kW at 400 V. It features rugged screw-type M6 main terminals aligned with IEC 60947 standards, providing 690 V insulation, 6 kV surge protection, and IP20 front-side protection (terminals IP00) for reliable industrial use. The unit typically comes with a 24 V AC coil (50/60 Hz), consuming moderate coil power and allowing seamless integration into common control panels.

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