Schneider Electric LRD4369 TeSys Deca Thermal Overload Relay – 110…140A, Class 10A, 75kW @ 400V Motor Protection Supplier | SIMPLYBUY
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Schneider Electric LRD4369 TeSys Deca Thermal Overload Relay – 110…140A, Class 10A, 75kW @ 400V Motor Protection
Schneider Electric LRD4369 TeSys Deca Thermal Overload Relay – 110…140A, Class 10A, 75kW @ 400V Motor Protection - Image 2
Schneider Electric LRD4369 TeSys Deca Thermal Overload Relay – 110…140A, Class 10A, 75kW @ 400V Motor Protection - Image 3

Schneider Electric LRD4369 TeSys Deca Thermal Overload Relay – 110…140A, Class 10A, 75kW @ 400V Motor Protection

ParameterValue
Product TypeDifferential Thermal Overload Relay
Series / BrandTeSys LRD / TeSys Deca – Schneider Electric
Model NumberLRD4369
Thermal Protection Adjustment Range110…140 A
Tripping ClassClass 10A (IEC 60947‑4‑1)
Motor Power (AC‑3 @ 400V)75 kW
Rated Insulation Voltage (Ui)1000 V (power circuit, IEC 60947‑4‑1)
Rated Operational Voltage (Ue)1000 V AC, 0…400 Hz
Rated Impulse Withstand Voltage (Uimp)6 kV (IEC 60947‑1)
Tripping Threshold1.14 ± 0.06 × Ir (IEC 60947‑4‑1)
Auxiliary Contacts1 NO + 1 NC
Conventional Free Air Thermal Current (Ith)5 A (signalling circuit)
Network Frequency0…400 Hz
Phase Failure SensitivityTripping at 130% of Ir on two phases, last at 0
Temperature Compensation‑20…60 °C (‑4…140 °F)
Reset TypeManual or automatic (selectable)
Connection TypeScrew clamp terminals (power circuit 4…35 mm² flexible)
Dimensions (W × H × D)105 mm × 138 mm × 155 mm (packaging approx.)[reference:2]
Net WeightApprox. 0.9 kg[reference:3]
Degree of Protection (IP)IP20[reference:4]
Ambient Operating Temperature‑20…60 °C (no derating)[reference:5]
MountingDirect on LC1D150 contactor; DIN rail or screw fixing with LA7D3064
Standards & CertificationsIEC 60947‑4‑1 / ‑5‑1, UL, CSA, CCC, EAC, ATEX, Marine; EN 50495[reference:6]
Environmental ComplianceGreen Premium (RoHS/REACh compliant); Carbon footprint: 8 kg CO₂ eq.[reference:7]
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Product Description

The Schneider Electric LRD3365C TeSys thermal overload relay is designed to provide reliable motor overload protection in industrial control applications. It offers an adjustable current setting range of 48 to 65 A with Class 10A trip characteristics for standard motor protection requirements. The relay is designed for integration with TeSys D contactors and provides flexible installation and reset operation for motor starter assemblies.

Standard Features

  • 48-65 A Adjustable Protection Range: Provides adjustable thermal overload protection for motors requiring current settings from 48 A to 65 A.

  • Class 10A Trip Protection: Provides standard overload trip characteristics suitable for general industrial motor applications.

  • TeSys D Contactor Compatibility: Designed for use with Schneider Electric TeSys D contactors to build complete motor starter solutions.

  • Manual and Automatic Reset Capability: Allows flexible reset configuration according to control system requirements.

  • Reliable Motor Protection: Helps protect motors against overload conditions and excessive current during operation.

  • Industrial Panel Integration: Suitable for motor control centers, machinery, and automation equipment.

Technical Specifications

Parameter Value
TypeThermal Overload Relay
Manufacturer Part NumberLRD3365C
SeriesTeSys LRD
Protection FunctionThermal overload protection
Current Setting Range48-65 A
Trip ClassClass 10A
Mounting CompatibilityTeSys D contactor range
Reset ModeManual / Automatic reset selectable
Auxiliary Contacts1 NO + 1 NC
Control FunctionOverload trip indication and motor protection
Connection TypeScrew terminals
StandardsIEC 60947-4-1
ApplicationThree-phase motor protection and motor starters

Schneider Electric LRD4369 TeSys Deca Thermal Overload Relay – 110…140A, Class 10A, 75kW @ 400V Motor Protection

Manufacturer: Schneider Electric
Model: LRD4369
Type: Differential Thermal Overload Relay
Series: TeSys LRD / TeSys Deca
Thermal Protection Adjustment Range: 110…140 A
Tripping Class: Class 10A
Motor Power (AC‑3 @ 400V): 75kW
Rated Insulation Voltage (Ui): 1000 V
Auxiliary Contacts: 1 NO + 1 NC
Application: Motor overload and phase failure protection in industrial applications

The Schneider Electric LRD4369 is a differential thermal overload relay from the TeSys Deca series, designed for reliable protection of 3‑phase motors against overloads and phase failures. With a thermal adjustment range of 110…140 A and a Class 10A tripping characteristic, it protects motors up to 75kW at 400V. The relay features phase failure and load unbalance detection, a manual‑automatic reset selector, a trip test button for simulation, a stop button, and a flag indicator. It connects directly to the bottom terminals of LC1D150 contactors to form a compact starter. Multi‑standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine), it is a Green Premium product compliant with RoHS and REACh regulations.[reference:0][reference:1]

  • Wide Thermal Adjustment Range: Adjustable from 110A to 140A with a precise dial, providing flexible overload protection for a variety of motor applications.

  • Class 10A Tripping: Delivers reliable overload protection for standard motor starting applications, ensuring safe and predictable operation.

  • Phase Failure & Load Unbalance Detection: Provides enhanced motor protection by detecting phase loss and load imbalances, preventing motor damage.

  • Integrated Auxiliary Contacts: Built‑in 1 NO + 1 NC auxiliary contacts for remote fault signalling and control circuit integration.

  • Manual‑Automatic Reset & Test Functions: Features a selector for manual or automatic reset, a trip test button for simulation, a stop button, and a flag indicator for clear status indication.

  • Easy Installation & Mounting: Direct connection to LC1D150 contactors, or DIN rail / screw fixing with optional terminal block LA7D3064.

  • Global Compliance & Sustainability: Multi‑standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine); Green Premium product with a lifecycle carbon footprint of 8 kg CO₂ eq.

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