SCHNEIDER ELECTRIC LRD3359 / LR2D3359 0444926

Schneider Electric TeSys LRD Thermal Overload Relay

Description

The Schneider Electric LRD3359 is a TeSys LRD thermal overload relay designed for the protection of motors. It offers a thermal setting range of 48 to 65 A and is intended for direct mounting on TeSys D contactors, models LC1D40A through LC1D65A. This component is crucial for preventing motor damage due to overcurrents, phase loss, or unbalanced loads.

Specifications

• Manufacturer: Schneider Electric
• Product Range: TeSys LRD
• Model: LRD3359 / LR2D3359
• Thermal Setting Range: 48…65 A
• Trip Class: Class 10A according to IEC 60947-4-1
• Rated Insulation Voltage (Ui): 1000 V
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Auxiliary Contacts: 1 NO + 1 NC
• Reset: Manual (Blue push-button) or Automatic
• Stop: Red push-button

Label Info

• Part Number: LRD3359 / LR2D3359
• Order Code: 0444926
• Standards: IEC, VDE, UL, CSA

Application

This thermal overload relay is widely used in industrial automation and control systems for motor protection in applications such as pumps, fans, conveyors, and other machinery requiring reliable overload detection.

Country of Origin

Made in France.

CO2 Impact

Opting for this pre-owned LRD3359 thermal overload relay helps save approximately 20 kg of CO2 compared to manufacturing a new one. This choice supports sustainable practices by extending the product’s lifecycle.

Availability

This item is in stock and ready for dispatch. It is a used component in excellent working condition, tested for full functionality. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the difference between the LRD3359 and LR2D3359 designations?

The LR2D3359 is an older product reference for this thermal overload relay. The LRD3359 is the current commercial reference. Functionally, they are the same product for the 48-65A range.

Can this overload relay be mounted separately from a contactor?

Yes, while it is designed for direct mounting on TeSys D contactors (LC1D40A to LC1D65A), it can also be mounted separately using a dedicated terminal block accessory, such as the LA7D3064.

What does “Class 10A” signify for this relay?

Class 10A indicates the trip time characteristic. It means the relay will trip within 10 seconds when the motor is subjected to a locked rotor condition, which is typically 6 to 7.5 times the full load current setting. This class is suitable for most standard motor applications.

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Last Update: Friday, March 13, 2026