Siemens 3TF54 Contactor

Siemens 3TF54 Contactor is a three-pole motor starter designed for heavy-duty 3‑phase loads and AC‑3 duty at 600 V. This model is rated for 250 A at 600 V (AC‑3) and can drive motors up to about 132 kW at 600 V, making it suitable for high‑torque applications such as conveyors, pumps, and fans in industrial machinery. It comes with a 110/120 VAC control coil (60 Hz) and includes 2 normally open and 2 normally closed auxiliary contacts for basic interlocking and signal feedback. As a direct substitute in Siemens installations, it is compatible with the Siemens Sirius 3TF family and designed to replace OEM 3TF54 units, enabling straightforward replacement and integration into existing 3TF control schemes. The contacor supports up to 100 HP at 230 V, 200 HP at 460 V, and 250 HP at 575 V, reflecting its capacity to handle a broad range of motor sizes.