Siemens 3UA6200-3M Thermal Overload Relay

Siemens 3UA6200-3M is a three‑pole thermal overload relay engineered to mount with Siemens motor starters to protect medium‑ to high‑current motors from overheating by interrupting the control circuit when the relay senses an overload. It offers a precise setting range of 150 to 180 A, enabling protection to be matched to the motor’s full‑load current, with test configurations documented around 170 A in typical installations. The relay includes a built‑in auxiliary contact arrangement of 1 normally open and 1 normally closed contact (1 NO + 1 NC) for control circuits, and it is commonly used in conjunction with Siemens 3TF52‑series contactors in motor control applications. As part of the Siemens 3UA62 family, 3UA6200‑3M represents the high‑amp variant designed for integration with Siemens starter systems, providing compatible mounting, wiring, and protective function within standard Siemens motor control assemblies.