Description

Schneider LR2K0310 | TeSys K – differential thermal overload relays -2.6…3.7 A – class 10A

Schneider LR2K0310 | Thermal Overload Relay, TeSys K – 2.6…3.7 A, Class 10A

The Schneider LR2K0310 is a differential thermal overload relay from the TeSys K series, designed to protect three-phase motors against overloads, phase failures, and unbalanced currents. With an adjustable current range of 2.6 to 3.7 A, this relay provides reliable motor protection in compact control panel configurations.

General Information:

  • Brand: Schneider Electric

  • Series: TeSys K

  • Model: LR2K0310

  • Product Type: Thermal Overload Relay

  • Operating Range: 2.6 to 3.7 Amps

  • Trip Class: 10A (standard motor protection response time)

  • Reset Type: Manual or automatic

Key Features:

  • Differential Protection: Ensures protection against phase loss and unbalanced loads

  • Adjustable Current Setting: For fine-tuned motor protection

  • Manual/Auto Reset Modes: Offers flexibility in application

  • Direct Mounting: Attaches directly to compatible TeSys K contactors

  • Auxiliary Contacts: Includes 1 NO + 1 NC for status signaling

  • Compact Design: Ideal for space-saving panel installations

Technical Specifications:

  • Current Range: 2.6…3.7 A

  • Trip Class: 10A (typical response time for motor start protection)

  • Mounting: Direct on TeSys K contactors (such as LC1K)

  • Control Circuit Voltage: No separate supply required – works passively

  • Standards: IEC 60947-4-1, IEC 60947-5-1

  • Auxiliary Contacts: 1 Normally Open + 1 Normally Closed

  • Reset Method: Manual / Auto switchable

Applications:

  • Three-phase motor protection

  • HVAC systems

  • Pumps, conveyors, and small machinery

  • Compact electrical panels

Benefits:

  • Prevents costly motor damage due to overload or phase failure

  • Easy integration with Schneider TeSys K contactors

  • Flexible reset options for different operational needs

  • Durable, reliable, and backed by Schneider’s global quality assurance

Additional information

brands

Schneider Electric

Specifications

Main
Range TeSys
Product name TeSys LRK
Product or component type Differential thermal overload relay
Device short name LR2K
Relay application Motor protection
Product compatibility LC7K LP1K LP4K LC1K
Network type DC AC
Thermal overload class Class 10A conforming to IEC 60947-4-1
Thermal protection adjustment range 2.6…3.7 A
[Ui] rated insulation voltage Power circuit: 690 V conforming to BS 4941 Power circuit: 690 V conforming to IEC 60947 Power circuit: 750 V conforming to VDE 0110 group C Power circuit: 600 V conforming to CSA C22.2 No 14
Complementary
Network frequency <= 400 Hz
Mounting support Under contactor Plate, with specific accessories Rail, with specific accessories
Auxiliary contact composition 1 NO + 1 NC
[Ith] conventional free air thermal current 6 A for signalling circuit
[Ue] rated operational voltage <= 690 V for power circuit 690 V AC AC-15 for signalling circuit 250 V DC DC-13 for signalling circuit
Associated fuse rating 6 A gG for signalling circuit conforming to VDE 0660 6 A gG for signalling circuit conforming to IEC 60947
[Uimp] rated impulse withstand voltage 6 kV
Power dissipation per pole 2 W
Phase failure sensitivity Yes conforming to IEC 60947-4-1
Local signalling Trip indicator (yellow)
Control type Red push-button: trip test function Blue push-button: stop and manual reset selector switch: manual or automatic reset
Connections - terminals Screw clamp terminals 1 cable(s) 1.5…4 mm²solid Screw clamp terminals 2 cable(s) 1.5…4 mm²solid Screw clamp terminals 1 cable(s) 0.75…4 mm²flexible without cable end Screw clamp terminals 2 cable(s) 0.75…4 mm²flexible without cable end Screw clamp terminals 1 cable(s) 0.34…2.5 mm²flexible with cable end Screw clamp terminals 2 cable(s) 0.34…1.5 mm²flexible with cable end
Tightening torque 1.3 N.m - on screw clamp terminals - with screwdriver Philips No 2 1.3 N.m - on screw clamp terminals - with screwdriver flat Ø 6 mm 1.3 N.m - on screw clamp terminals - with screwdriver pozidriv No 2
height 58 mm
Width 45 mm
Depth 65 mm
Net weight 0.145 kg
Environment
Standards IEC 60947 VDE 0660 BS 4941 NF C 63-650
product certifications UL CSA UKCA
Protective treatment TC conforming to IEC 60068 TC conforming to DIN 50016
IP degree of protection IP2X conforming to IEC 60529
Ambient air temperature for operation -20…55 °C without derating conforming to IEC 60947 -30…60 °C with derating conforming to IEC 60947
Ambient air temperature for storage -40…70 °C
Operating altitude 2000 m without derating
Fire resistance 850 °C conforming to IEC 60695-2-1
Flame retardance V1 conforming to UL 94 Requirement 2 conforming to NF F 16-101 Requirement 2 conforming to NF F 16-102
Mechanical robustness Shocks NO contact: 10 Gn for 11 ms conforming to IEC 60068-2-27 Shocks NC contact: 10 Gn for 11 ms conforming to IEC 60068-2-27 Vibrations NO contact: 2 Gn, 5...300 Hz conforming to IEC 60068-2-6 Vibrations NC contact: 2 Gn, 5...300 Hz conforming to IEC 60068-2-6
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 5.000 cm
Package 1 Width 7.000 cm
Package 1 Length 8.500 cm
Package 1 Weight 158.400 g
Unit Type of Package 2 S02
Number of Units in Package 2 41
Package 2 Height 15.000 cm
Package 2 Width 30.000 cm
Package 2 Length 40.000 cm
Package 2 Weight 6.731 kg
Unit Type of Package 3 P06
Number of Units in Package 3 656
Package 3 Height 75.000 cm
Package 3 Width 80.000 cm
Package 3 Length 60.000 cm
Package 3 Weight 115.702 kg
Contractual warranty
Warranty 18 months

Main Document

Main Document

Data Sheet : Download

Main Document

Data Sheet : Download

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