Schneider LRD12 TeSys Deca Thermal Overload Relay 5.5-8A

The Schneider Electric LRD12 is a TeSys Deca thermal overload relay with a 5.5 to 8 A setting range, designed for motor protection on AC and DC circuits. It delivers Class 10A tripping per IEC 60947-4-1 and mounts directly below TeSys D contactors LC1D09 through LC1D38, simplifying motor starter assemblies.

Technical specifications:

• Commercial reference: LRD12
• Manufacturer: Schneider Electric
• EAN:
• Series / range: TeSys LRD, TeSys Deca
• Product type: Thermal overload relay
• Application: Motor protection
• Overload setting range: 5.5...8 A
• Tripping class: Class 10A per IEC 60947-4-1
• Network type: AC and DC
• Rated voltage: 690 V AC, 0...400 Hz per IEC 60947-4-1; 600 V per UL and CSA
• Rated impulse withstand voltage: 6 kV
• Tripping threshold: 1.14 +/- 0.06 Ir per IEC 60947-4-1
• Phase loss sensitivity: 130% of Ir on two phases, last phase at 0
• Auxiliary contacts: 1 NO + 1 NC
• Compatible contactors: LC1D09, LC1D12, LC1D18, LC1D25, LC1D32, LC1D38
• Mounting: below contactor; plate or DIN rail with separate accessories
• Connection - supply circuit: screw terminals, 1...6 mm² solid / 1.5...10 mm² flexible
• Connection - control circuit: screw terminals, 1...2.5 mm² solid or flexible
• Tightening torque: 1.7 N.m
• IP protection: IP20 per IEC 60529
• Operating temperature: -20...60 °C per IEC 60947-4-1
• Storage temperature: -60...70 °C
• Dimensions (W x H x D): 45 x 66 x 70 mm
• Weight: 0.124 kg
• Certifications: IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, LROS, ATEX INERIS, UKCA

Features and benefits:

• Class 10A tripping per IEC 60947-4-1 ensures accurate motor overload protection
• Phase loss detection trips at 130% of Ir on two phases with the last phase at 0
• Temperature compensation across -20 to 60 °C maintains consistent trip performance
• Direct below-contactor mounting with LC1D09 to LC1D38 reduces panel wiring
• Integrated 1 NO + 1 NC auxiliary contact for signaling and circuit interlocking
• Red stop button and blue reset button for manual operation and fault reset

Applications:

• Motor overload protection in industrial automation and control panels
• Motor starter assemblies paired with TeSys D contactors
• AC and DC motor control in manufacturing and process equipment
• Marine and offshore control systems requiring DNV-GL or LROS approval

Compliant with EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, and EN 50495. Part of the Schneider Electric TeSys Deca range.

Also known as: Schneider LRD12, Schneider Electric LRD12, TeSys thermal overload relay 5.5-8A.