Siemens 3TB4817-0A is a three-pole power contactor for industrial motor control, rated to switch up to 600 V AC on three‑phase circuits. The coil variant for this model is 220–264 V AC (50/60 Hz), enabling control from standard AC control circuits, and the unit uses a Size 3 frame for compact, robust operation. Used to start and stop three‑phase motors in industrial equipment, it is commonly deployed in control panels and motor control centers for reliable, repeatable switching.
