Schneider Electric TeSys LRD thermal overload relays - 110...140 A - class 10A

LRD4369
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Description

TeSys LRD thermal overload relay, 140A/1000V, thermal setting range 110-140A, tripping class 10A, for protection of 3-phase motors 75kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector acting also as reset button, a trip test button for simulation of a tripping, a stop button, 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 LC1D150. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LA7D3064 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine), Green Premium compliant (RoHs/Reach).

Product Details

Weight (in Kg) 0.833
Net weight 0.9 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 110-140 A
[IP] Degree of Protection IP20 conforming to IEC 60529
Connections Terminals power circuit: screw clamp terminals 1 cable(s) 4-35 mm² flexible with cable end
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) 4-50 mm² flexible without cable end
power circuit: screw clamp terminals 1 cable(s) 4-50 mm² solid without cable end
[Uimp] Rated Impulse Wthstand Voltage 6 kV conforming to IEC 60947-1
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: 9 N.m - on screw clamp terminals
Standards EN/IEC 60947-4-1
EN/IEC 60947-5-1
GB/T 14048.4
GB/T 14048.5
EN 50495
Product Certifications IEC
CCC
EAC
ATEX INERIS
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: 1000 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 LC1D150
Relay Application motor protection
Thermal Overload Class class 10A conforming to IEC 60947-4-1
Dielectric Strength 2.2 kV at 50 Hz conforming to IEC 60947-1
Permissible Current 0.06 A at 440 V DC-13 for signalling circuit
0.12 A at 600 V AC-15 for signalling circuit
Device short name LRD
Depth 132 mm
Ambient air temperature for storage -60-70 °C
Compatibility code LRD
Network type DC
AC
[Ue] Rated Operational Voltage 1000 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1
Brand Schneider Electric

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