Documentation & Downloads
Schneider Electric LR2K0307 TeSys K Differential Thermal Overload Relay 1.2-1.8A Class 10A
- MPN: LR2K0307
- PPN: SCH-LR2K0307
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Description
TeSys LRK thermal overload relay, 1.8A/690V, thermal setting range 1.2-1.8A, tripping class 10A, for protection of 3-phase motors 0.55kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector, a test slide switch for simulation of a tripping, reset/stop button, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by screw clamp terminals, it connects directly to the bottom terminals of 3-pole contactors LC1K06-K16. Mounting on DIN rail, separated from the contactor, with use of a terminal block LA7K0064 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC), Green Premium compliant (RoHs/Reach).
Features
- Equipped with an adjustable thermal setting dial, this relay provides a precise current adjustment range of 1.20 to 1.80 Amps. This localized adjustment wheel lets maintenance technicians fine-tune the trip threshold to match the exact nameplate FLA of small pumps, fans, or conveyor drives, eliminating nuisance tripping while ensuring strict compliance with Canadian Electrical Code overcurrent protection standards.
- This TeSys K differential thermal overload relay features integrated phase failure sensitivity that monitors current balance across all three phases. If a single-phasing event or a critical phase unbalance occurs, the internal mechanism trips rapidly to cut power to the control circuit, protecting your expensive 3-phase fractional-horsepower motors from catastrophic overheating and premature winding burnout.
- Designed for seamless, plug-and-play mechanical integration, this overload relay clips and bolts directly onto the bottom terminals of the TeSys K miniature contactor series (such as the LC1K or LP1K). This direct-mounting architecture eliminates the need for extra interconnecting wires, reduces labor times, and keeps your overall control assembly footprint remarkably compact on the DIN rail.
- This device comes factory-equipped with 1 NO (Normally Open) and 1 NC (Normally Closed) auxiliary contacts rated for standard industrial control circuits. The NC contact wires directly into your contactor coil loop to drop out power during a fault, while the NO contact simultaneously signals a local pilot light or routes a discrete digital input back to a supervisory PLC for immediate fault diagnosis.
Documentation & Downloads
Specifications
Key Specifications
- Network Type
- AC || DC
- Relay Application
- motor protection
- Product Name
- TeSys LRK
- Range
- TeSys
- Product Compatibility
- LC1K || LP1K || LP4K || LC7K
Thermal Protection Adjustment Range1.2-1.8 A
Product Or Component Typedifferential thermal overload relay
Thermal Overload Classclass 10A IEC 60947-4-1
[Ui] Rated Insulation Voltagepower 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
Device Short NameLR2K
Complementary
- Network Frequency
- <= 400 Hz
- [Ith] Conventional Free Air Thermal Current
- 6 A signalling circuit
- Phase Failure Sensitivity
- yes IEC 60947-4-1
- Associated Fuse Rating
- 6 A gG for signalling circuit conforming to VDE 0660 || 6 A gG for signalling circuit conforming to IEC 60947
- Connections - Terminals
- screw clamp terminals 1 1.5-4 mm²solid || screw clamp terminals 2 1.5-4 mm²solid || screw clamp terminals 1 0.75-4 mm²flexible without cable end || screw clamp terminals 2 0.75-4 mm²flexible without cable end || screw clamp terminals 1 0.34-2.5 mm²flexible with cable end || screw clamp terminals 2 0.34-1.5 mm²flexible with cable end
- Power Dissipation Per Pole
- 2 W
- Tightening Torque
- 1.3 N.m screw clamp terminals Philips No 2 || 1.3 N.m screw clamp terminals flat Ø 6 mm || 1.3 N.m screw clamp terminals pozidriv No 2
- Mounting Support
- under contactor || plate, with specific accessories || rail, with specific accessories
- Depth
- 65 mm
Height58 mm
Auxiliary Contact Composition1 NO + 1 NC
[Ue] Rated Operational Voltage<= 690 V power circuit || 690 V AC AC-15 signalling circuit || 250 V DC DC-13 signalling circuit
Net Weight0.145 kg
[Uimp] Rated Impulse Withstand Voltage6 kV
Local Signallingtrip indicator yellow)
Control Typered push-button trip test function || blue push-button stop and manual reset || selector switch manual or automatic reset
Width45 mm
Environment
- Product Certifications
- UL || CSA || UKCA
- Standards
- IEC 60947 || NF C 63-650 || VDE 0660 || BS 4941
- Ip Degree Of Protection
- IP2X IEC 60529
- Ambient Air Temperature For Storage
- -40-70 °C
- Operating Altitude
- 2000 m without derating
Mechanical Robustnessshocks 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
Ambient Air Temperature For Operation-20-55 °C without derating IEC 60947 || -30-60 °C with derating IEC 60947
Flame RetardanceV1 UL 94 || requirement 2 NF F 16-101 || requirement 2 NF F 16-102
Protective TreatmentTC IEC 60068 || TC DIN 50016
Fire Resistance850 °C IEC 60695-2-1
Contractual warranty
- Warranty
- 18 months
Offer Sustainability
- Rohs Exemption Information
- Yes
- Environmental Disclosure
- ENVPEP2211018
- Reach Regulation
- Reference contains Substances of Very High Concern above the threshold
- China Rohs Regulation
- Product out of China RoHS scope. Substance declaration for your information
- Eu Rohs Directive
- Compliant with Exemptions
Mercury FreeYes
Sustainable Offer StatusGreen Premium product
WeeeThe product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins
Circularity ProfileENVEOLI2211018
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CAD
$65.34
/ EA
Available to Order
Lead times may vary. For an accurate estimate please contact us.
Company Stock:
0
Looking to buy a large quantity?
To view product inventory
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