TeSys Deca Thermal Overload Relay 37-50A Class 10A 1NO+1NC
Schneider Electric

Schneider Electric LRD3503 TeSys Deca Thermal Overload Relay 37-50A Class 10A 1NO+1NC

  • MPN: LRD3503
  • PPN: SCH-LRD3503

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$270.82

/ EA

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Spec sheet

Description

TeSys LRD thermal overload relay, 50A/690V, thermal setting range 37-50A, tripping class 10A, for protection of 3-phase motors 22kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector, a test selector for simulation of a tripping, reset and stop buttons, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by EverLink BTR screw terminals , it connects directly to the bottom terminals of 3-pole contactors LC1D40A-D80A. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LAD96560 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, Marine), Green Premium compliant (RoHs/Reach).

Documentation & Downloads

Specifications

Key Specifications

Country of Origin
France
Depth123 mm

Important Information Attributes

Associated Fuse Rating
4 A gG for signalling circuit, 4 A BS for signalling circuit
Mechanical Robustness
shocks15 Gn for 11 ms IEC 60068-2-7, vibrations4 gn IEC 60068-2-6
Network Type
AC, DC
Product Name
TeSys LRD, TeSys Deca
Temperature Compensation
-20-60 °C, -20-60 °C
[Ui] Rated Insulation Voltage
power circuit 600 V CSA, power circuit 600 V UL, power circuit 690 V IEC 60947-4-1
Carbon Footprint Of The Distribution Phase [A4]
0.532707701, 0.5 kg CO2 eq.
Carbon Footprint Of The Installation Phase [A5]
0.060948491, 0.1 kg CO2 eq.
Carbon Footprint Of The Use Phase [B2, B3, B4, B6]
2 kg CO2 eq., 1.896335784
Local Publishable Date
2025-12-11
Stocking Flag
Y
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
Product Kit Identifier
N
Device Short Name
LRD
Flame Retardance
V1 conforming to UL 94
Phase Failure Sensitivity
tripping current 130 % of Ir on two phase, the last one at 0
Product Or Component Type
differential thermal overload relay
Returnability
No
Sustainable Packaging
Yes
Thermal Protection Adjustment Range
37-50 A
Total Lifecycle Carbon Footprint
4 kg CO2 eq.
Weee Label
The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins.
Pep Code
ENVPEP0804005EN
Pep Verification Date
2024-06-01
Psr Version
PSR-0005-ed3.1-EN-2023 12 08
Data Source
extrapolated product
Functional-unit Quantity
1
Reference Lifetime, In Y
20
Energy Model - Manufacturing [A1-a3]
France, FR
Energy Model - Use [B6]
Electricity Mix; Low voltage; 2018; France, FR
Recyclability Potential, In %
27
Width Nominal
55 mm
[Ue] Rated Operational Voltage
690 V AC 0...400 Hz power circuit IEC 60947-4-1
Nbr. Of Units In Pkg.
1
Take-back
No
Control TypeRed push-button stop, Blue push-button reset
Mounting Supportplate, with specific accessories, rail, with specific accessories, under contactor
Permissible Current0.95 A 380 V AC-15 signalling circuit, 0.06 A 440 V DC-13 signalling circuit
RangeTeSys, TeSys Deca
Certificate AgencyIEC, UL, CSA, CCC, EAC, DNV-GL, RMRS, EU-RO MR, LROS (Lloyds register of shipping), ATEX INERIS, UKCA
Connections - Terminalscontrol circuit spring terminals 1 1-2.5 mm² flexible without cable endpower circuit EverLink BTR screw connectors 1 1-35 mm² flexible without cable end, power circuit EverLink BTR screw connectors 1 1-35 mm² flexible with cable end, power circuit EverLink BTR screw connectors 1 1-35 mm² solid without cable end, control circuit spring terminals 1 1-2.5 mm² solid without cable end
Carbon Footprint Of The End-of-life Phase [C1 To C4]0.9 kg CO2 eq., 0.871212274
Carbon Footprint Of The Manufacturing Phase [A1 To A3]0.5 kg CO2 eq., 0.45216814
Local Data StatusPublishable
Return IndicatorN
Stock Policy2
ServiceabilityNo
Weee ScopeIn
Scope PerimeterAt least in Europe
End Of Life Doc RefENVEOLI0804005
Reach Full Compliance Status IdNOT_CONTAINING_SVHC
Rohs Eur In ScopeYes
Rohs Eur Conformity Date1926
China Rohs In ScopeNo
With Recycled CardboardYes
Product Contributes To Saved And Avoided EmissionsNo
Compatibility CodeLRD
Dielectric Strength1.89 kV 50 Hz IEC 60947-1
Network Frequency0...400 Hz
Product AvailabilityNon-Stock - Not normally stocked in distribution facility
Relay Applicationmotor protection
Software Versionv6.1
Thermal Overload Classclass 10A IEC 60947-4-1
Tightening Torquepower circuit 5 N.m EverLink BTR screw connectors
Tripping Threshold1.14 +/- 0.06 Ir IEC 60947-4-1
R Thermal Protection Adj Range37-50 A
Database Version2023-02
Pcr VersionPCR-4-ed4-EN-2021 09 06
Type Of Verification For The PepIndependent internal review
Functional-unit DescriptionThe functional unit of the LRD365 is to detect overload currents in order to protect the load for 20 years.
Functional-unit Unitunit
Energy Consumption On Product Lifetime, In Kwh28.3824
Energy Model - Installation [A5]Electricity Mix; Low voltage; 2018; France, FR
Energy Model - End Of Life [C1-c4]Electricity Mix; Low voltage; 2018; France, FR
Height Nominal70 mm
[Ith] Conventional Free Air Thermal Current5 A signalling circuit
[Uimp] Rated Impulse Withstand Voltage6 kV
Package Weight(Lbs)431.000 g
Warranty (In Months)18

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
-60-70 °C, -60-70 °C
Take Back
No
Recycled Metal Content At Cr Level
0 %
Mercury Free
Yes
Circularity Profile
ENVEOLI0804005
Environmental Disclosure
ENVPEP0804005EN
Ip Degree Of Protection
IP20 conforming to IEC 60529
Packaging Without Single Use Plastic
Yes
Reach Regulation
Free of Substances of Very High Concern above the threshold
Pep Verification Date
2024-06-01
Psr Version
PSR-0005-ed3.1-EN-2023 12 08
Ambient Air Temperature For Operation-20-60 °C without derating IEC 60947-4-1, -20-60 °C without derating IEC 60947-4-1, -20-60 °C without derating IEC 60947-4-1-20-60 °C without derating IEC 60947-4-1, -20-60 °C without derating IEC 60947-4-1, -20-60 °C without derating IEC 60947-4-1
Product CompatibilityLC1D50A, LC1D40A, LC1D65A
Reach Free ShvcYes
Toxic Heavy Metal FreeYes
Carbon Footprint3.81337239
Climatic WithstandIACS E10
Eu Rohs DirectiveCompliant
Packaging Made With Recycled CardboardYes
Reach Free Of SvhcYes
Pep CodeENVPEP0804005EN
Pcr VersionPCR-4-ed4-EN-2021 09 06
Type Of Verification For The PepIndependent internal review

General Attributes

Product Or Component Type
differential thermal overload relay

ETIM

ETIM 8
EC000106
ETIM 9EC000106

Contractual Warranty Attributes

Warranty Period
18 months
Warranty18 months

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