Siemens 3UA59-00-2E Overload Relay 25-40A Module

Siemens 3UA59-00-2E Overload Relay is a thermal‑delayed protection device for three‑phase motors, offered as a single‑unit overload relay with a setting range of 25 to 40 A and a voltage rating around 660–690 V AC. The 3UA59‑00‑2E variant is designed for direct installation with compatible Siemens motor control equipment and includes one normally open and one normally closed contact (1NO+1NC) for signaling or interlock purposes. This overload relay is described in the 3UA59 family as phase‑failure sensitive, enabling protection under abnormal supply conditions and helping prevent motor damage. Typical applications include safeguarding three‑phase motors in industrial control circuits, often integrated into Siemens World Series motor protection arrangements where reliable current sensing and clear auxiliary contacts are advantageous.