Siemens 3Tf4322-6F Three-Phase Contactor Starter

The Siemens 3TF4322-6F Three-Phase Contactor Starter is a 3‑pole AC‑3 motor starter in the Siemens World Series 3TF family, built to directly switch three‑phase loads from a low‑voltage control circuit. It is rated for 22.5 A and supports loads up to 600 V, with a horsepower rating of 15 HP at 460 V (and 7.5 HP at 230 V, 20 HP at 575 V), making it suitable for applications such as pumps, conveyors, fans, and machine tools in industrial panel installations. The 3TF4322‑6F uses a 110/120 VAC control coil and provides two normally open and two normally closed auxiliary contacts to support basic start/stop logic and interlocking. This unit is designed for use with Siemens Sirius 3TF control systems, enabling straightforward replacement and expansion within a standard Siemens motor control scheme. The 6F designation identifies a specific coil/terminal configuration within the 3TF family, ensuring compatibility with common spare parts and maintenance practices in an existing control setup.