Schneider Electric Thermal Overload Relay 12-18A LRD21

Description

The Schneider Electric LRD21 is a differential thermal overload relay from the TeSys Deca series, designed for the protection of AC motors. It provides reliable protection against overloads, phase failure, and extended starting times. With its adjustable thermal setting range from 12A to 18A, it offers precision and flexibility for various motor applications. This relay is designed for direct mounting onto TeSys D contactors, creating a compact and efficient motor starter solution.

Specifications

• Manufacturer: Schneider Electric
• Model: LRD21
• Part Number: 034683
• Series: TeSys Deca (TeSys LRD)
• Product Type: Differential Thermal Overload Relay
• Thermal Setting Range: 12 to 18 A
• Trip Class: Class 10A according to IEC 60947-4-1
• Rated Insulation Voltage: 690 V
• Mounting Support: Direct mounting on contactor (LC1D25, LC1D32, LC1D38) or rail mounting with accessory
• Control Type: Red push-button for stop, Blue push-button for reset

Label Info

• Brand: Schneider Electric
• Type: LRD21
• Part Nr: 034683
• Range: 12-18A
• EAN: 3389110346831

Application

The LRD21 is typically used in industrial automation and control systems for motor protection in applications such as pumps, fans, conveyors, and other machinery requiring reliable overload protection.

Country of Origin

Made in France.

CO2 Impact

By purchasing this reused item, you help avoid the emission of approximately 4.96 kg of CO2, which is produced during the manufacturing of a new unit. This is a sustainable choice for your operations.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

The LRD21 has a trip class of 10A. This means it is designed to trip within 10 seconds when subjected to a current 7.2 times its set current rating, making it suitable for standard motor protection applications.

Yes, while it is designed for direct mounting on TeSys D contactors like the LC1D25, LC1D32, and LC1D38, it can also be mounted independently using a separate terminal block, part number LAD7B106.

The LRD21 features both manual and automatic reset modes. You can select the mode using the blue button. For manual reset, you press the red stop button after the relay has cooled down. The yellow trip indicator will show the status.

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Laatst bijgewerkt: Friday, March 13, 2026