Schneider Electric TeSys LRD thermal overload relays - 2.5...4 A - class 10A

LRD08
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Description

TeSys LRD thermal overload relay, 4A/690V, thermal setting range 2.5-4A, tripping class 10A, for protection of 3-phase motors 1.1-1.5kW@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).

Product Details

Activity PPCTR
Weight (in Kg) 0.1409
Net weight 0.124 kg
Product Or Component Type differential thermal overload relay
Control Type red push-button: stop
blue push-button: reset
Tripping Threshold 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1
Network frequency 0...400 Hz
Auxiliary Contact Composition 1 NO + 1 NC
Temperature Compensation -20-60 °C
Thermal Protection Adjustment Range 2.5-4 A
[IP] Degree of Protection IP20 conforming to IEC 60529
Connections Terminals control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible without cable end
control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible with cable end
control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² solid without cable end
power circuit: screw clamp terminals 1 cable(s) 1.5-10 mm² flexible without cable end
power circuit: screw clamp terminals 1 cable(s) 1-4 mm² flexible with cable end
power circuit: screw clamp terminals 1 cable(s) 1-6 mm² solid without cable end
[Uimp] Rated Impulse Wthstand Voltage 6 kV
phase_failure_sensitivity tripping current 130 % of Ir on two phase, the last one at 0
Ambient air temperature for operation -20-60 °C without derating conforming to IEC 60947-4-1
Tightening Torque control circuit: 1.7 N.m - on screw clamp terminals
power circuit: 1.7 N.m - on screw clamp terminals
Standards EN/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
Product Certifications IEC
UL
CSA
CCC
EAC
BV
RINA
DNV-GL
LROS (Lloyds register of shipping)
ATEX INERIS
UKCA
Mechanical Robustness vibrations: 6 Gn conforming to IEC 60068-2-6
shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7
[Ith] Conventional Free Air Thermal Current 5 A for signalling circuit
[ui] Rated Insulation Voltage power circuit: 600 V conforming to CSA
power circuit: 600 V conforming to UL
power circuit: 690 V conforming to IEC 60947-4-1
Associated Fuse Rating 4 A gG for signalling circuit
4 A BS for signalling circuit
Mounting support plate, with specific accessories
rail, with specific accessories
under contactor
Flame Retardance V1 conforming to UL 94
Climatic Withstand conforming to IACS E10
Product Compatibility LC1D12
LC1D09
LC1D25
LC1D38
LC1D32
LC1D18
Relay Application motor protection
Thermal Overload Class class 10A conforming to IEC 60947-4-1
Dielectric Strength 1.89 kV at 50 Hz conforming to IEC 60947-1
Permissible Current 3 A at 120 V AC-15 for signalling circuit
0.22 A at 125 V DC-13 for signalling circuit
Device short name LRD
Depth 70 mm
Ambient air temperature for storage -60-70 °C
Height 66 mm
width 45 mm
Compatibility code LRD
Network type AC
DC
[Ue] Rated Operational Voltage 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1
Brand Schneider Electric

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