Siemens 3UA54002Q Overload Relay 25-36A 3UA54 00-2Q

Siemens 3UA54002Q is a thermally delayed overload relay in the 3UA family, rated for 25–36 A, designed to mount on Siemens World Series motor starters. It uses bimetallic elements to provide overload protection for three-phase motors up to 690 V and is intended for use with Siemens World Series contactors such as the 3TF44 and 3TB44 to form compact motor-starter assemblies. The unit includes an auxiliary signaling contact (1NO+1NC) and a manual reset option, enabling local indication and reset after an overload event; the current setting is fixed within the 25–36 A range, ensuring protection tailored to that motor size. The 3UA54002Q corresponds to 3UA54-00-2Q in Siemens nomenclature and is marketed as a direct substitute for the OEM 3UA54-00-2Q in World Series motor control assemblies.