Schneider Electric LRD05 TeSys Deca Thermal Overload Relay, 0.63-1A, 690VAC, Class 10A
Schneider Electric LRD05 TeSys Deca Thermal Overload Relay, 0.63-1A, 690VAC, Class 10A
- MPN: LRD05
- PPN: SCH-LRD05
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CAD$124.05/ EA
Description
TeSys LRD thermal overload relay, 1A/690V, thermal setting range 0.63-1A, tripping class 10A, for protection of 3-phase motors 0.25-0.37kW@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
- The Schneider Electric LRD05 features a precision adjustment dial with a setting range of 0.63 to 1 Amp. This allows industrial electricians to dial in the exact Full Load Amps (FLA) of a small motor, providing tailored protection that prevents overheating while eliminating the nuisance tripping common with fixed-rated thermal units.
- Engineered for seamless integration, the LRD05 plug-on design connects directly to the load side of TeSys Deca (LC1D09 through LC1D38) contactors. This "no-wire" connection creates a compact, professional motor starter assembly, saving valuable DIN rail space and reducing wiring errors in crowded control cabinets.
- Equipped with advanced differential bimetallic technology, this relay detects phase unbalance and phase loss. If one phase drops out—a common cause of rapid motor burnout—the LRD05 trips automatically to disconnect the power, safeguarding your expensive machinery from catastrophic failure.
- The unit features a dual-function blue button that allows you to choose between Manual and Automatic reset modes. This flexibility is critical for Canadian facilities; use "Manual" for localized safety checks or "Automatic" for hard-to-reach equipment where the system needs to self-recover once the bimetallic strips have cooled.
- The LRD05 comes standard with 1 NO (Normally Open) + 1 NC (Normally Closed) isolated auxiliary contacts. The NC contact is used to break the contactor coil circuit upon a fault, while the NO contact provides a feedback signal to trigger an alarm or notify a PLC, ensuring maintenance teams are alerted immediately.
Specifications
- Rated Operational Voltage
- 690 V AC 0...400 Hz power circuit IEC 60947-4-1
- Thermal Overload Class
- Class 10A IEC 60947-4-1
- Conventional Free Air Thermal Current
- 5 A signaling circuit
- Rated Insulation Voltage
- Power circuit 600 V CSA, 600 V UL, 690 V IEC 60947-4-1
- Phase Failure Sensitivity
- Tripping current 130 % of Ir on two phase, the last one at 0
- Auxiliary Contacts
- 1 NO + 1 NC
- Mounting Support
- Plate, Rail, Under contactor with accessories
- Net Weight
- 0.124 kg (0.27 lb)
- Operating Ambient Temperature
- -20 to 60 °C (-4 to 140 °F)
- Flame Retardance
- V1 UL 94
- Dielectric Strength
- 1.89 kV 50 Hz IEC 60947-1
- Product Certifications
- IEC, UL, CSA, CCC, EAC, BV, RINA, DNV GL, Lloyds Register, ATEX, INERIS, UKCA
- RoHS Compliance
- Compliant with exemptions
- Warranty
- 18 months
Thermal Protection Adjustment Range0.63-1 A
Tripping Threshold1.14 +/- 0.06 Ir IEC 60947-4-1
Permissible Current3 A 120 V AC-15, 0.22 A 125 V DC-13 signaling circuit
Rated Impulse Withstand Voltage6 kV
Relay ApplicationMotor protection
Control TypeRed push-button stop, Blue push-button reset
Dimensions (H x W x D)2.60 in x 1.77 in x 2.76 in (66 mm x 45 mm x 70 mm)
IP Degree of ProtectionIP20 IEC 60529
Storage Ambient Temperature-60 to 70 °C (-76 to 158 °F)
Mechanical RobustnessVibrations 6 Gn IEC 60068-2-6, Shocks 15 Gn for 11 ms IEC 60068-2-7
StandardsEN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5, EN 50495
Country of OriginFrance
Mercury FreeYes
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