The Schneider Electric LR3D3503 is a thermal overload relay designed for the protection of AC circuits and motors. This relay is part of the LR3D series, engineered to provide reliable safeguarding against unbalanced loads and motor overloads. While this specific model has been discontinued by the manufacturer, its technical specifications remain relevant for applications requiring robust motor protection.

Technical details

• Series: LR3D
• Type: Thermal Overload Relay
• Protective Range: Designed for thermal setting ranges comparable to the LR3D350 model, which typically covers 37-50 Amps. (Verify exact range against manufacturer datasheet for specific application requirements).
• Application: Safeguards AC circuits and motors from overload conditions.
• Functionality: Protects against unbalanced loads.
• Discontinuation Status: Discontinued by manufacturer.
• Compatibility: Suitable for use with compatible Schneider Electric motor starters and contactors.
• Mounting: Designed for direct mounting onto compatible contactors or separate mounting with appropriate accessories.

Applications & compatibility

This thermal overload relay is commonly employed in industrial settings to protect motors in applications such as conveyor systems, pumps, fans, and machine tools. Its design ensures that motors are protected from damage due to sustained overcurrents, which can arise from mechanical overloads or voltage imbalances. The LR3D3503 is intended for integration into motor control circuits where precise thermal protection is critical for operational longevity.

Available from Industrial Automation Co as new, refurbished, or surplus stock, backed by a 2-year warranty with same-day shipping on in-stock items. Request a quote for the Schneider Electric LR3D3503 or contact our technical team for cross-reference assistance with compatible LR3D series components.