Siemens 3UA52001G Overload Relay

Siemens 3UA52001G is a three‑pole thermal overload relay (solid‑state style) designed to protect motors when mounted with Siemens Sirius contactors. The current setting range is 4 to 6.3 A, and the main circuit is rated up to 600 VAC, with front mounting and a reset mechanism for fault recovery. It is intended for use with Siemens contactors in the 3TF32/33 family and related Sirius motor starter assemblies (for example 3TF42/43/44 and 3TB42/43/44), providing integrated protection within compact control gear. Also cataloged as 3UA5200‑1G, this device is the same overload relay under an alternate part numbering. The 3‑pole configuration and 4–6.3 A setting make it suitable for protecting small to mid‑sized motors in industrial controls where precise overload protection is required.