Siemens 3TB4117-0B Contactor

Siemens 3TB4117-0B is a four-pole power contactor with a 24 V DC coil and a contact arrangement of 2 normally open and 2 normally closed contacts, rated for AC-1 operation up to 20 A at up to 660 VAC. This configuration makes it suitable for controlling small-to-medium three‑phase loads such as motors, fans, pumps, and conveyors in industrial equipment and control panels. The 24 VDC coil supports integration with standard PLCs and low‑voltage control circuits, enabling reliable actuation from common control logic. As part of the Siemens Furnas 3TB family, it provides robust duty for machine control and panel installations where compact, interchangeably designed 4‑pole contactors are required.