Schneider Electric LRD04 TeSys Deca Thermal Overload Relay 0.4-0.63A 690V Class 10A
Schneider Electric LRD04 TeSys Deca Thermal Overload Relay 0.4-0.63A 690V Class 10A
- MPN: LRD04
- PPN: SCH-LRD04
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CAD$124.05/ EA
Description
TeSys LRD thermal overload relay, 0.63A/690V, thermal setting range 0.4-0.63A, tripping class 10A, for protection of 3-phase motors 0.12-0.18kW@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 screw clamp terminals, it connects directly to the bottom terminals of 3-pole contactors LC1D09-D38. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LAD7B106 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine), Green Premium compliant (RoHs/Reach).
Features
- Designed with integrated differential tripping, this bimetallic thermal overload relay offers precision protection against single-phasing and phase unbalance. By automatically cutting power when it detects a loss of phase, it prevents the excessive heat buildup that leads to catastrophic motor winding failure, saving you thousands in emergency replacement costs and unscheduled industrial downtime.
- Featuring a calibrated adjustment dial, this relay allows for fine-tuned setting between 0.4 and 0.63 Amps to match your motor’s specific nameplate data. This high-resolution control ensures the relay isn't too sensitive to start-up spikes while remaining responsive enough to trigger a trip the moment a genuine overload occurs, providing a custom-tailored safety net for low-horsepower machinery.
- Engineered for seamless mechanical and electrical connection, the LRD04 plugs directly into the bottom of LC1D09 through LC1D38 contactors. This "plug-and-play" integration eliminates the need for additional mounting brackets or complex wiring, significantly reducing panel assembly time and ensuring a compact, vibration-resistant footprint within your control enclosure.
- Equipped with a blue "Reset" button and a red "Stop" button, this unit provides flexible control for your maintenance workflow. You can toggle between manual reset for supervised safety or automatic reset for remote applications, while the built-in test trip simulation allows you to verify the internal mechanism and control wiring without needing an actual fault, ensuring your safety systems are always "mission-ready."
Specifications
- Thermal Protection Adjustment Range
- 0.4-0.63 A
- Thermal Overload Class
- Class 10A IEC 60947-4-1
- Auxiliary Contacts
- 1 NO + 1 NC
- Conventional Free Air Thermal Current
- 5 A signalling circuit
- Rated Impulse Withstand Voltage
- 6 kV
- Temperature Compensation Range
- -20 to 60 °C (-4 to 140 °F)
- Connection Terminals
- Screw clamp terminals for control and power circuits, 1-10 mm² cable cross-section
- Height
- 66 mm (2.60 in)
- Depth
- 70 mm (2.76 in)
- IP Degree of Protection
- IP20 IEC 60529
- Ambient Air Temperature for Storage
- -60 to 70 °C (-76 to 158 °F)
- Mechanical Robustness
- Vibrations 6 Gn IEC 60068-2-6, Shocks 15 Gn for 11 ms IEC 60068-2-7
- Standards
- IEC 60947-4-1, UL 60947-4-1, CSA C22.2 No 60947-4-1, EN IEC 60947-5-1, GB/T 14048.4, EN 50495
- Reach Regulation
- Contains Substances of Very High Concern above threshold
- Mercury Free
- Yes
- Country of Origin
- France
Rated Operational Voltage690 V AC, 0-400 Hz power circuit IEC 60947-4-1
Relay ApplicationMotor Protection
Tripping Threshold1.14 ± 0.06 Ir IEC 60947-4-1
Permissible Current3 A 120 V AC-15 signalling circuit, 0.22 A 125 V DC-13 signalling circuit
Phase Failure SensitivityTripping current 130% of Ir on two phase, last one at 0
Mounting SupportPlate, Rail with accessories, Under Contactor
Tightening Torque1.7 N·m (15.05 lbf·in)
Width45 mm (1.77 in)
Net Weight0.124 kg (0.27 lb)
Ambient Air Temperature for Operation-20 to 60 °C (-4 to 140 °F) without derating IEC 60947-4-1
Flame RetardanceV1 UL 94
Dielectric Strength1.89 kV 50 Hz IEC 60947-1
Product CertificationsIEC, UL, CSA, CCC, EAC, ATEX, UKCA, BV, RINA, DNV-GL, Lloyds register, Marine
RoHS ComplianceCompliant with Exemptions
Sustainable Offer StatusGreen Premium
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