Siemens 3TH4244-OAK2 Three-Phase Contactor Relay

Siemens 3TH4244-OAK2 is an eight-pole, three-phase contactor relay designed to switch motor circuits in industrial control systems. This 120 V AC coil variant provides four normally open and four normally closed contacts, enabling both start/stop control and interlocking logic within a single device. It uses screw-terminal connections and follows the 3TH4 contactor family specifications, including EN 50011 compliance for contactors and starters used in low-power control circuits. Ideal for driving three-phase motors, pumps, and conveyors, the compact eight‑contact package lets multiple switching paths be wired neatly in automation installations where reliable, coordinated control is required.