Schneider Electric LR2K0307 TeSys K Differential Thermal Overload Relay 1.2-1.8A Class 10A

MPN: LR2K0307
PPN: SCH-LR2K0307
UNSPSC: 39122330

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Description

LR2K0307 is a TeSys LRK thermal overload relay from Schneider Electric to be used with a TeSys K contactors. It protects motors 0.55kW@400V thanks to a thermal range 1.2-1.8A, a tripping class 10A and phase unbalance protection. LR2K0307 is a TeSys LRK thermal overload relay from Schneider Electric for direct mounting on TeSys K contactors. With a thermal setting range 1.2-1.8A, a tripping class 10A and phase unbalance detection, it protects motors 0.55kW@400V. It provides manual test & reset buttons, automatic reset, trip auxiliary contact and flag indicator. Available worldwide, it is multi-standards certified (IEC, UL, CSA, CCC, EAC, Marine). Thermal overload protection relay, bimetallic type, with phase unbalance protection (differential). Direct mounting on the bottom terminals of a Tesys contactor LC1K06 to form a compact starter. Light and compact, 45mm wide. Manual control with test & reset buttons, manual / automatic reset selector. Trip signaling with 1NO+1NC auxiliary contacts and trip flag indicator. Can be completed with terminal blocks for separate mounting (LA7K0064).

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

Country of Origin	Czechia
Depth	65 mm

Weight	145 g

Complementary Attributes

Ue Rated Operational Voltage	<= 690 V power circuit, <= 690 V power circuit<= 690 V power circuit, <= 690 V power circuit690 V AC AC-15 signalling circuit, 250 V DC DC-13 signalling circuit
Uimp Rated Impulse Withstand Voltage	6 kV

Ui Rated Insulation Voltage	power circuit 690 V BS 4941, power circuit 690 V IEC 60947power circuit 750 V VDE 0110 group Cpower circuit 600 V CSA C22.2 No 14

Important Information Attributes

Persona Type Ids	EU, LC, OM, OM8, PB, SC
Market Segmentation Id	COMMERCIAL, INDUSTRIAL
Associated Fuse Rating	6 A gG for signalling circuit conforming to VDE 0660, 6 A gG for signalling circuit conforming to IEC 60947
Flame Retardance	V1 conforming to UL 94requirement 2 conforming to NF F 16-101, requirement 2 conforming to NF F 16-102
Mounting Support	under contactorplate, with specific accessories, rail, with specific accessories
Network Type	AC, DC
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
Certificate Agency	UL, CSA, UKCA
Carbon Footprint Of The End Of Life Phase C1 To C4	0.3570299549275095, 0.4 kg CO2 eq.
Carbon Footprint Of The Manufacturing Phase A1 To A3	0.9 kg CO2 eq., 0.8931643852450023
Local Data Status	Publishable
Return Indicator	Y
Serviceability	No
Weee Scope	In
Scope Perimeter	At least in Europe
End Of Life Doc Ref	ENVEOLI2211018
Reach Full Compliance Status Id	NOT_CONTAINING_SVHC
Rohs Eur In Scope	Yes
Rohs Eur Conformity Date	0702
China Rohs In Scope	No
With Recycled Cardboard	Yes
Product Contributes To Saved And Avoided Emissions	No
Tier	2
Function Option	Standard
Compatibility Code	LR2K
Fire Resistance	850 °C IEC 60695-2-1
Phase Failure Sensitivity	yes IEC 60947-4-1
Product Availability	Stock - Normally stocked in distribution facility
Product Or Component Type	differential thermal overload relay
Range Of Product	TeSys K thermal overload relays
Returnability	Yes
Sustainable Packaging	Yes
Thermal Protection Adjustment Range	1.2-1.8 A
Weee Label	The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Database Version	2022-01
Height Nominal	58 mm
Nbr. Of Units In Pkg.	1
Ith Conventional Free Air Thermal Current	6 A signalling circuit
Functional Unit Description	Turn off all or part of an installation by separating the installation or part of the installation of all electrical energy or earth, for safety reasons with a rated voltage 690V and rated current 20A ensuring isolation characterized by rated voltage 6KV. This function is provided for 20 years.
Functional Unit Unit	unit
Energy Consumption On Product Lifetime In Kwh	74.6352

Persona Type Names	End User, Contractor, Original Equipment Manufacturer, OEM - Control Panelbuilder, Panel Builder, Electrician
Market Segmentation	Commercial, Industrial
Control Type	Red push-button trip test functionBlue push-button stop and manual reset, selector switch manual or automatic reset
Mechanical Robustness	vibrations NC contact2 Gn, 5...300 Hz IEC 60068-2-6, 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
Network Frequency	<= 400 Hz, <= 400 Hz
Protective Treatment	TC IEC 60068, TC DIN 50016
Connections Terminals	screw clamp terminals 2 0.75-4 mm²flexible without cable endscrew clamp terminals 2 0.34-1.5 mm²flexible with cable end, 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 endscrew clamp terminals 1 0.34-2.5 mm²flexible with cable end
Carbon Footprint Of The Distribution Phase A4	0.017124164486850613, 0 kg CO2 eq.
Carbon Footprint Of The Installation Phase A5	0 kg CO2 eq., 0.043940103606662645
Carbon Footprint Of The Use Phase B2 B3 B4 B6	5 kg CO2 eq., 4.986699999999999
Local Publishable Date	2026-06-27
Device Type	Relay, Control & Measurement - Protection relay
Traceability	No
Weee Product Category	5
Eoli Availability Display	Yes
Reach Full Compliance Status	Free of Substances of Very High Concern above the threshold
Reach Compliance Directive	Free of Substances of Very High Concern above the threshold
Rohs Eur Status	Compliant
Rohs Eur Full Compliance Status	Compliant
China Rohs Label	1
Without Single Use Plastic	Yes
Tier Id	2
Function Option Id	STANDARD
Product Kit Identifier	N
Device Short Name	LR2K
Local Signalling	trip indicator Yellow)
Power Dissipation Per Pole	2 W
Product Name	TeSys LRK
Range	TeSys
Relay Application	motor protection
Software Version	v5.9.4
Thermal Overload Class	class 10A IEC 60947-4-1
Total Lifecycle Carbon Footprint	6 kg CO2 eq.
R Thermal Protection Adj Range	1.2-1.8 A
Data Source	extrapolated product
Width Nominal	45 mm
Customs Code	8536490050
Warranty In Months	18
Functional Unit Quantity	1
Reference Lifetime In Y	20
Recyclability Potential In %	42

Environment Attributes Main

China Rohs Regulation	Product out of China RoHS scope , Pro-active China RoHS declaration (out of China RoHS legal scope)
Ambient Air Temperature For Storage	-40-70 °C, -40-70 °C
Take Back	No
Recycled Metal Content At Cr Level	0 %
Mercury Free	Yes
Circularity Profile	ENVEOLI2211018
Eu Rohs Directive	Compliant
Operating Altitude	6561.68 ft (2000 m) without derating
Packaging Without Single Use Plastic	Yes
Reach Regulation	Free of Substances of Very High Concern above the threshold
Pep Verification Date	2025-08-05
Psr Version	PSR-0005-ed2-2016 03 29

Ambient Air Temperature For Operation	-20-55 °C without derating IEC 60947, -20-55 °C without derating IEC 60947, -20-55 °C without derating IEC 60947, -30-60 °C with derating IEC 60947, -30-60 °C with derating IEC 60947, -30-60 °C with derating IEC 60947-20-55 °C without derating IEC 60947, -20-55 °C without derating IEC 60947, -20-55 °C without derating IEC 60947, -30-60 °C with derating IEC 60947, -30-60 °C with derating IEC 60947
Product Compatibility	LC1K, LP1K, LP4K, LC7K
Reach Free Shvc	Yes
Toxic Heavy Metal Free	Yes
Carbon Footprint	6.297958608266024
Environmental Disclosure	ENVPEP2211018EN
Ip Degree Of Protection	IP2X conforming to IEC 60529
Packaging Made With Recycled Cardboard	Yes
Reach Free Of Svhc	Yes
Pep Code	ENVPEP2211018EN
Pcr Version	PEP-PCR-ed4-2021 09 06
Type Of Verification For The Pep	Independent internal review