Siemens 3UA52001K Overload Relay 8-12A 5A Coil

Siemens 3UA52001K is a three‑pole thermal overload relay from the 3UA50 family, designed to protect motors in control panels by interrupting current when an overload condition is detected. It provides an adjustable protection setting in the 8 to 12 A range and is cataloged as a 3UA5200‑1K variant, which aligns with Siemens’ overload relay offerings around the 8–12.5 A spectrum. Typically mounted with compatible Siemens contactors as part of a motor protection starter assembly, this relay is identified by the part number 3UA52001K and is intended for use in industrial applications where reliable motor protection and straightforward replacement are priorities. By pairing with Siemens’ Sirius/SIRIUS‑style starters, it helps ensure coordination between the protective relay and the contactor coil and main circuit ratings, delivering targeted overload protection for motors in line with Siemens’ 3UA/3UC relay family conventions.