Siemens OLR0800 U 5 - 8A Overload Relay

Siemens OLR0800 U is a thermal overload relay with a setting range of 5.0 to 8.0 A, designed to protect motors in Siemens motor-control circuits by interrupting current when motor current exceeds the preset limit. As part of Siemens’ overload-relay lineup, the OLR0800 U is intended for use alongside compatible Siemens contactors to provide consistent, discrete overload protection in industrial automation applications. The 5–8 A range allows precise adjustment to suit a motor's full-load amperage, helping prevent winding damage during startup and operation while enabling straightforward integration with standard Siemens control panels and wiring schemes. This model’s designation—OLR0800 U 5-8A—signals its specific current-setting window within Siemens’ OLR family, making it a direct option when a replacement or spare is required for existing Siemens equipment and for engineers standardizing on Siemens components across a plant.