3MT8120-1AB07 Siemens Contactor AC-3 120A/55kW 400V size S6 Original Brand New

3MT8120-1AB07

Siemens Contactor AC-3, 120A/55kW,400V, 4NO4NC, 24 VAC, 50 Hz, 3-pole, size S6,screw terminal

Overview

Siemens 3MT8120‑1AB07 is a heavy-duty, three-pole AC‑3 contactor in the Size S6 SIRIUS line, engineered for demanding industrial motor control. Rated for 120 A at 400 V, it can switch motors up to 55 kW—ideal for large pumps, compressors, conveyors, and industrial machinery. This contactor features rugged screw-terminal power connections, ensuring secure, low-resistance current paths. The “AB07” suffix typically indicates a 24 V AC coil, common in PLC-operated systems. It comes with 2 normally open (NO) + 2 normally closed (NC) auxiliary contacts, enabling advanced control logic, interlocking, and feedback integration.

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