Siemens AG 3UA55 00-2Q Thermal Overload Relay

Siemens AG 3UA55 00-2Q Thermal Overload Relay is a compact bimetal motor-protection device designed to be paired with Siemens World Series starters, forming a complete motor protection assembly. It provides an adjustable current-trip setting in the 25–36 A range and is typically used with Siemens contactors in 3-phase motor circuits to protect against overheating. The 00-2Q variant includes a manual reset and comes ready for wiring with connectors and terminals for straightforward installation. This thermal overload relay from the 3UA family protects motors by interrupting the control circuit when an overload condition is detected, helping prevent motor damage and prolonged downtime.