SCHNEIDER ELECTRIC LRD08

Schneider Electric LRD08 TeSys Thermal Overload Relay

Description

The LRD08 is a high-performance thermal overload relay from the Schneider Electric TeSys D range, designed for the protection of motors. It provides reliable and accurate protection against overloads and phase failures. With an adjustable current range from 2.5A to 4A and a trip class of 10, this relay is suitable for a wide variety of standard motor applications. It features direct mounting compatibility with TeSys D contactors (LC1D09-LC1D38), creating a compact and easy-to-install motor starter.

Specifications

• Manufacturer: Schneider Electric
• Series: TeSys LRD
• Model: LRD08
• Product Type: Differential Thermal Overload Relay
• Thermal Protection Adjustment Range: 2.5 to 4 A
• Rated Insulation Voltage (Ui): 690 V AC
• Rated Impulse Withstand Voltage (Uimp): 6 kV
• Trip Class: Class 10 conforming to IEC 60947-4-1
• Network Type: AC
• Auxiliary Contacts: 1 NO + 1 NC
• Control Type: Red push-button for stop, Blue push-button for reset

Label Info

• Brand: Telemecanique / Square D (Schneider Electric)
• Model: LRD 08
• Current Range: 2.5 – 4A
• Voltage: Ui 690V, Uimp 6kV
• Standards: IEC/EN 60947-4-1, UL, CSA

Application

This relay is ideally used in industrial automation, HVAC systems, and material handling for protecting three-phase AC motors from thermal damage. Its direct mounting capability on contactors makes it perfect for control panels where space is a premium.

Country of Origin

Made in France.

CO2 Impact

By purchasing this pre-owned component, you are contributing to a circular economy and helping to avoid 6.0 kg of CO2 emissions that would be generated from manufacturing a new one.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

Question?

What is the function of the “Class 10” rating on the LRD08 relay?

Answer?

The “Class 10” designation means the relay will trip within 10 seconds when the motor is subjected to an overcurrent of six times its set full-load ampere rating. This class is suitable for standard motor applications with normal starting times.

Question?

Can the LRD08 be mounted separately, away from a contactor?

Answer?

Yes, while it’s designed for direct mounting onto TeSys D contactors (like the LC1D09-D38 models), it can be mounted independently on a DIN rail using a separate terminal block adapter, such as the LAD7B106.

Question?

How do I switch between manual and automatic reset on this LRD08 relay?

Answer?

The reset mode is selected using the blue button. For manual reset, press the blue button after a trip. For automatic reset, the blue button must be in its ‘out’ or un-pressed position, and the relay will reset automatically after a cooling period.

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Laatst bijgewerkt: Friday, March 13, 2026