The Siemens OLR1353 Overload Relay is a motor-protection device rated for 120–135 A in systems up to 600 VAC. It functions as an overload protection component within industrial motor-control circuits, tripping to prevent motor windings from overheating when current exceeds the set limit. The OLR1353 designation identifies a high-current overload relay option from Siemens’ legacy lineup, designed to integrates with compatible Siemens control hardware in demanding industrial environments.
