TeSys LRD thermal overload relays - 25...32 A - class 20

LRD1532
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Description

TeSys LRD thermal overload relay, 32A/690V, thermal setting range 25-32A, tripping class 20, for protection of 3-phase motors 15kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustment 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 signaling. 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 LAD7B105 (to be ordered separately). Multi standards certified (IEC, UL, CSA, Marine), Green Premium compliant (RoHS/REACh).

Product Details

[ue] Rated Operational Voltage 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1
[ui] Rated Insulation Voltage power circuit: 600 V conforming to CSA
[uimp] Rated Impulse Withstand Voltage 6 kV
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 92 mm
Device Short Name LRD
Dielectric Strength 1.89 kV at 50 Hz conforming to IEC 60947-1
Fire Resistance 850 °C conforming to IEC 60695-2-1
Flame Retardance V1 conforming to UL 94
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 0.19 kg
Network Frequency 0...400 Hz
Network Type DC
Product Certifications IEC
Product Compatibility LC1D32
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 45 mm
Connections - Terminals control circuit: screw clamp terminals 2 cable(s) 1-2.5 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 1.5 A at 240 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 20 conforming to IEC 60947-4-1
Thermal Protection Adjustment Range 25-32 A
Tripping Threshold 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1

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