Siemens 3UA59001F Overload Relay

Siemens 3UA59001F Overload Relay is a thermal overload protection device for three‑phase motors, designed to be used alongside Siemens contactors and installed separately from the main control unit. The 3UA59 00‑1F variant provides adjustable current protection in the 3.2–5 A range and is rated for up to 600 V AC, making it suitable for standard motor starter circuits in industrial panels. The part number 3UA59 00‑1F corresponds to this current setting range, and the relay is compatible with Siemens 3TF contactors (and associated starters) to form a complete motor protection starter. As part of the 3UA59 family, it is specified for 600 V three‑phase operation and supports multiple setting ranges within that family; some 3UA59 variants also offer phase‑failure sensitivity as an optional feature.