Schneider LRD08 TeSys Deca Thermal Overload Relay 2.5-4A

The Schneider Electric LRD08 is a TeSys LRD differential thermal overload relay with a 2.5-4 A adjustment range, designed for motor protection in industrial applications. It provides Class 10A tripping performance per IEC 60947-4-1 and mounts directly below compatible TeSys D contactors including LC1D09, LC1D12, LC1D18, LC1D25, LC1D32, and LC1D38.

Technical specifications:

• Commercial reference: LRD08
• Manufacturer: Schneider Electric
• EAN:
• Series / range: TeSys Deca
• Product type: Differential thermal overload relay
• Application: Motor protection
• Thermal overload adjustment: 2.5-4 A
• Tripping class: Class 10A per IEC 60947-4-1
• Tripping threshold: 1.14 +/- 0.06 Ir per IEC 60947-4-1
• Phase loss sensitivity: Trips at 130% of Ir in two phases, last phase at 0
• Network type: AC / DC
• Network frequency: 0-400 Hz
• Rated voltage [Ue]: 690 V AC per IEC 60947-4-1
• Rated insulation voltage [Ui]: 690 V per IEC 60947-4-1; 600 V per UL and CSA
• Rated impulse withstand voltage [Uimp]: 6 kV
• Auxiliary contact: 1 NO + 1 NC
• Thermal current in air [Ith]: 5 A (control circuit)
• Mounting: Below contactor; plate or DIN rail with accessories
• Connection type: Screw terminal blocks
• Tightening torque: 1.7 N.m (power and control circuits)
• Dimensions (W x H x D): 45 x 66 x 70 mm
• Weight: 0.124 kg
• IP protection: IP20 per IEC 60529
• Operating temperature: -20-60°C
• Storage temperature: -60-70°C
• Standards: EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, CSA C22.2 No 60947-4-1, GB/T 14048.4, EN 50495
• Certifications: IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, ATEX, UKCA

Features and benefits:

• Mounts directly below TeSys D contactors for compact, integrated motor starter assemblies
• Built-in phase loss sensitivity detects single-phasing and trips at 130% of Ir
• Temperature compensation across -20-60°C maintains consistent tripping accuracy
• Red stop and blue reset push buttons for straightforward manual control and reset
• Broad global certification including ATEX, UKCA, DNV-GL, and LROS for marine and hazardous environments

Applications:

• Motor protection in industrial control and automation panels
• Pump and conveyor motor starter assemblies
• HVAC motor protection circuits
• Machine tool and compressor motor control

Compliant with EN/IEC 60947-4-1 and EN/IEC 60947-5-1. Part of the Schneider Electric TeSys Deca range.

Also known as: Schneider LRD08, Schneider Electric LRD08, TeSys thermal overload relay 2.5-4A, motor protection relay LRD08.