3MT8120-1AL24 Siemens Contactor AC-3 120A/55kW 400V size S6 Original Brand New

3MT8120-1AL24

Siemens Contactor AC-3, 120A/55kW,400V, 2NO2NC, 230 VAC, 50/60 Hz, 3-pole, size S6,screw terminal

Overview

The Siemens 3MT8120‑1AL24 is a heavy-duty SIRIUS contactor in a Size S6 long housing, engineered for robust industrial motor control. It’s rated for AC‑3 operation at 115 A—with practical use up to around 120 A—and supports motors up to 55 kW at 400 V. Its extended “long” frame design allows for easier wiring and accommodates accessories such as auxiliary contacts, surge suppression units, and mechanical interlocks. Featuring a 3‑pole configuration with screw or bus-bar terminals, it ensures secure and high-reliability connections even in harsh industrial environments. Available with both AC/DC coil options (200–277 V) or traditional AC (42–48 V), it supports flexible control interface integration

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