Siemens 3TF44 Starter

Siemens 3TF44 Size 1 is a 3‑pole motor starter (contactor) with a 120 V AC control coil, designed for compact three‑phase motor control in industrial panels. This starter is part of the Sirius 3TF family and is commonly used to energize and de‑energize three‑phase motors in control circuits, with a compact form factor suitable for panel mounting. It includes two normally open and two normally closed auxiliary contacts to support interlocking, feedback, and sequencing in control logic. The nominal control coil is 120 V AC (often cataloged as 110/120 V), making it compatible with standard North American control circuitry. The exact load current rating varies by variant (some listings cite 27 A, others 32 A), so the precise rating depends on the specific part number (for example variants such as 3TF44 and 3TF4422‑0A). When paired with appropriate pilot devices and accessories, this starter integrates into broader Siemens Sirius motor control schemes for equipment like conveyors, pumps, and fans, offering reliable remote motor control in a compact, maintenance‑friendly package.