Description

Schneider LR2K0305 | Differential thermal overload relays, TeSys K, 0.54 to 0.8 A, class

10A

Technical Specifications

  • Brand: Schneider Electric

  • Series: TeSys K

  • Model: LR2K0305

  • Type: Differential Thermal Overload Relay

  • Adjustable Current Range: 0.54 to 0.8 A

  • Tripping Class: 10A (Fast Motor Protection)

  • Phase Imbalance Detection: Yes

  • Reset Mode: Manual and Automatic Reset

  • Mounting Type: Direct mounting on TeSys K contactors

  • Connection Type: Screw clamp terminals

  • Operating Temperature: -20°C to +60°C

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

Key Features

  • Motor Protection: Protects against overloads, phase loss, and unbalanced currents.

  • Adjustable Current Settings: Allows fine-tuning between 0.54 A and 0.8 A for precise protection.

  • Quick Tripping (Class 10A): Ensures fast response to overload conditions, reducing motor damage risk.

  • Auto/Manual Reset Options: Provides flexibility in reset operations for continuous system reliability.

  • Direct Mounting on TeSys K Contactors: Saves space and simplifies installation in compact control panels.

  • Phase Failure Protection: Detects phase loss and trips the circuit to prevent motor damage.

  • Reliable and Durable Design: Built for harsh industrial environments with long-term performance.

Applications

  • Industrial Motor Protection: Suitable for small three-phase motors in machinery and automation systems.

  • Pumps and Compressors: Ensures safe operation by preventing overheating.

  • HVAC Systems: Protects fans, blowers, and air handling units from overload.

  • Conveyors and Material Handling: Prevents motor burnouts in automated production lines.

  • Small Machine Tools: Used in CNC machines, drills, and lathes to prevent damage from excessive loads.

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 LP4K LC1K LP1K LC7K
Network type DC AC
Thermal overload class Class 10A IEC 60947-4-1
Thermal protection adjustment range 0.54…0.8 A
[Ui] rated insulation voltage Power circuit 690 V BS 4941 Power circuit 690 V IEC 60947 Power circuit 750 V VDE 0110 group C Power circuit 600 V 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 signalling circuit
[Ue] rated operational voltage <= 690 V power circuit 690 V AC AC-15 signalling circuit 250 V DC DC-13 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 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 0.002…0.006 in² (1.5…4 mm²)solid screw clamp terminals 2 0.002…0.006 in² (1.5…4 mm²)solid screw clamp terminals 1 0.001…0.006 in² (0.75…4 mm²)flexible without cable end screw clamp terminals 2 0.001…0.006 in² (0.75…4 mm²)flexible without cable end screw clamp terminals 1 0.0005…0.004 in² (0.34…2.5 mm²)flexible with cable end screw clamp terminals 2 0.0005…0.002 in² (0.34…1.5 mm²)flexible with cable end
Tightening torque 11.5 lbf.in (1.3 N.m) screw clamp terminals Philips No 2 11.5 lbf.in (1.3 N.m) screw clamp terminals flat Ø 6 mm 11.5 lbf.in (1.3 N.m) screw clamp terminals pozidriv No 2
Height 2.3 in (58 mm)
Width 1.8 in (45 mm)
Depth 2.6 in (65 mm)
Net Weight 0.320 lb(US) (0.145 kg)
Environment
Standards NF C 63-650 IEC 60947 VDE 0660 BS 4941
Product Certifications UL CSA UKCA
Protective treatment TC IEC 60068 TC DIN 50016
IP degree of protection IP2X conforming to IEC 60529
Ambient air temperature for operation -4.0000000000…131.0000000000 °F (-20…55 °C) without derating IEC 60947 -22.0000000000…140.0000000000 °F (-30…60 °C) with derating IEC 60947
Ambient Air Temperature for Storage -40.0000000000…158.0000000000 °F (-40…70 °C)
Operating altitude 6561.68 ft (2000 m) without derating
Fire resistance 1562.0000000000 °F (850 °C) 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 contact10 Gn for 11 ms IEC 60068-2-27 Shocks NC contact10 Gn for 11 ms IEC 60068-2-27 Vibrations NO contact2 Gn, 5...300 Hz IEC 60068-2-6 Vibrations NC contact2 Gn, 5...300 Hz IEC 60068-2-6
Ordering and shipping details
Category US10I1222324
Discount Schedule 0I12
GTIN 3389110230390
Returnability Yes
Country of origin US
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 3.3 in (8.5 cm)
Package 1 Width 2.8 in (7.2 cm)
Package 1 Length 1.9 in (4.8 cm)
Package 1 Weight 5.6 oz (158.0 g)
Unit Type of Package 2 S02
Number of Units in Package 2 41
Package 2 Height 5.9 in (15.0 cm)
Package 2 Width 11.8 in (30.0 cm)
Package 2 Length 15.7 in (40.0 cm)
Package 2 Weight 15.0 lb(US) (6.8 kg)
Contractual warranty
Warranty 18 months

Main Document

Main Document

Data Sheet : Download

Main Document

Data Sheet : Download

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