The Schneider Electric LRD14 is a TeSys LRD differential thermal overload relay with a current adjustment range of 7 to 10 A, designed for motor protection in AC and DC networks. Featuring tripping class 10A per IEC 60947-4-1 and phase loss sensitivity, it mounts directly below LC1D series contactors for compact starter assemblies.

Technical specifications:

• Commercial reference: LRD14
• Manufacturer: Schneider Electric
• EAN: 3389110346817
• Series / range: TeSys LRD, TeSys Deca
• Product type: Differential thermal overload relay
• Relay use: Motor protection
• Network type: AC, DC
• Overload tripping class: Class 10A per IEC 60947-4-1
• Thermal overload adjustment: 7…10 A
• Rated insulation voltage [Ui]: 690 V per IEC 60947-4-1; 600 V per UL/CSA
• Rated voltage [Ue]: 690 V AC, 0…400 Hz (power circuit)
• Rated impulse withstand voltage [Uimp]: 6 kV
• Network frequency: 0…400 Hz
• Tripping threshold: 1.14 +/- 0.06 Ir per IEC 60947-4-1
• Phase loss sensitivity: Trip at 130% of Ir in two phases, last phase at 0
• Auxiliary contact composition: 1 NO + 1 NC
• Permissible thermal current [Ith]: 5 A (signal circuit)
• Compatible contactors: LC1D09, LC1D12, LC1D18, LC1D25, LC1D32, LC1D38
• Mounting: Below contactor; panel or DIN rail with accessories
• Connection – power circuit: Screw terminals, 1 cable 1.5…10 mm flexible
• Connection – control circuit: Screw terminals, 2 cables 1…2.5 mm
• 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…60C per IEC 60947-4-1
• Storage temperature: -60…70C
• Dielectric strength: 1.89 kV at 50 Hz per IEC 60947-1
• Flame resistance: V1 per UL 94
• Vibration resistance: 6 Gn per IEC 60068-2-6
• Shock resistance: 15 Gn for 11 ms per IEC 60068-2-7
• Certifications: IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, LROS, ATEX INERIS, UKCA
• 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
• Warranty: 18 months

Features and benefits:

• Mounts directly below LC1D contactors, reducing panel wiring and saving installation space
• Phase loss sensitivity trips at 130% of Ir with one phase at zero, protecting motors from single-phasing damage
• Temperature compensation across -20…60C ensures consistent tripping accuracy in varying ambient conditions
• Integrated 1 NO + 1 NC auxiliary contact enables alarm signaling and control circuit interlocking
• Red stop and blue reset manual control buttons allow direct local operation
• Broad global certification portfolio including ATEX, DNV-GL, and UKCA for hazardous and marine applications

Applications:

• Motor overload protection in industrial automation and machine control panels
• Direct-on-line and reversing starter assemblies with TeSys LC1D contactors
• Pump, fan, and compressor motor protection in HVAC and building services
• Conveyor and material handling drive protection
• Marine and offshore motor control panels requiring DNV-GL or LROS certification

Compliant with 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, and EN 50495. Part of the Schneider Electric TeSys Deca range.

Also known as: Schneider LRD14, Schneider Electric LRD14, TeSys thermal overload relay 7-10A, motor protection relay LRD14.