TeSys LRD thermal overload relays - 80...104 A - class 10A

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TeSys LRD thermal overload relay, 104A/1000V, thermal setting range 80-104A, tripping class 10A, for protection of 3-phase motors 45kW@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 LC1D80-D95. 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

[ue] Rated Operational Voltage 1000 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1
[ui] Rated Insulation Voltage power circuit: 1000 V conforming to IEC 60947-4-1
[uimp] Rated Impulse Withstand Voltage 6 kV conforming to IEC 60947-1
Ambient Air Temperature for Operation -20-60 °C without derating conforming to IEC 60947-4-1
Ambient Air Temperature for Storage -60-70 °C
Climatic Withstand conforming to IACS E10
Compatibility Code LRD
Control Type red push-button: stop
Depth 115 mm
Device Short Name LRD
Dielectric Strength 2.2 kV at 50 Hz conforming to IEC 60947-1
Flame Retardance V1 conforming to UL 94
Height 81 mm
Ip Degree of Protection IP20 conforming to IEC 60529
Mechanical Robustness vibrations: 6 Gn conforming to IEC 60068-2-6
Mounting Support plate, with specific accessories
Net Weight 0.51 kg
Network Frequency 0...400 Hz
Network Type AC
Product Certifications IEC
Product Compatibility LC1D95
Product Name TeSys LRD
Product or Component Type differential thermal overload relay
Range TeSys
Standards EN/IEC 60947-4-1
Tightening Torque control circuit: 1.7 N.m - on screw clamp terminals
Width 70 mm
Connections - Terminals power circuit: screw clamp terminals 1 cable(s) 4-35 mm² flexible without cable end
[ith] Conventional Free Air Thermal Current 5 A for signalling circuit
Associated Fuse Rating 4 A gG for signalling circuit
Auxiliary Contact Composition 1 NO + 1 NC
Permissible Current 0.72 A at 500 V AC-15 for signalling circuit
Phase Failure Sensitivity tripping current 130 % of Ir on two phase, the last one at 0
Relay Application motor protection
Temperature Compensation -20-60 °C
Thermal Overload Class class 10A conforming to IEC 60947-4-1
Thermal Protection Adjustment Range 80-104 A
Tripping Threshold 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1

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