electronic overload relay for motor TeSys - 20...38 A - 200...240 V AC

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TeSys LR97D electronic overcurrent relay, 38A/690V, to be supplied with 200-240V AC, for protection of motors with a rated current 20-34A. It provides 3 dials to adjust the protection, LOAD (20-38A) for the overcurrent level, O-TIME (0.3-10sec) for the acceptable duration of the overcurrent, D-TIME (0.5-30sec) for the starting duration. In addition, the device trips when the current is higher than 3 x LOAD during more than 0.5sec in steady state and if there is a missing phase during more than 3sec. The settings include selectors for 1-phase/3-phase motors and manual/automatic reset, and the device has a reset button, a test/stop button, 2 LED indicators (Run/Trip), 2 auxiliary contacts 1NO/NC for fault signalling. Settings can be locked by sealing the transparent cover. For direct attachement to the bottom terminals of a 3-pole contactor LC1D25-D38, with screw clamp terminals on bottom, the separate mounting from the contactor is possible using the terminal block LAD7B106 (to be ordered separately). Multi-standards certified (IEC, UL, CSA, CCC, EAC), compliant RoHs/Reach.

Product Details

[ue] Rated Operational Voltage 600 V AC 50/60 Hz for power circuit conforming to CSA
[ui] Rated Insulation Voltage power circuit: 600 V conforming to CSA
[uimp] Rated Impulse Withstand Voltage 6 kV
[us] Rated Supply Voltage 200...240 V AC
Ambient Air Temperature for Operation -25-60 °C conforming to IEC 60947-4-1
Ambient Air Temperature for Storage -30-80 °C
Compatibility Code LR97
Contacts Type and Composition 1 C/O
Depth 67.5 mm
Device Short Name LR97
Dielectric Strength 2 V 50 Hz conforming to IEC 60255-5
Fire Resistance 850 °C conforming to IEC 60695-2-1
Height 67.5 mm
Ip Degree of Protection IP20 conforming to IEC 60529
Mounting Support direct on contactor
Net Weight 0.172 kg
Network Frequency 50...60 Hz
Network Type AC
Product Certifications CSA
Product Compatibility LC1D25...D38
Product Name TeSys D
Product or Component Type electronic overcurrent relay
Protection Type BS fuse 3 A - for control circuit
Quantity Per Set set of 10
Range TeSys
Standards IEC 60947
Tightening Torque control circuit: 0.6...1.2 N.m on lug-clamp
Width 45 mm
Connections - Terminals control circuit: cable 1 x 1-25 mm²flexible with cable end
[ith] Conventional Free Air Thermal Current 3 A for control circuit
Disturbance Radiated/conducted 10 V conforming to EN 61000-4-6
Maximum Power 28 W at 110 V DC conforming to IEC 60947
Operating Altitude 2000 m
Phase Failure Sensitivity < 3 s
Protective Treatment TH conforming to IEC 60068
Relay Application overload Imax > Isetting
Reset automatic reset 120 s fixed
Resistance to Electrostatic Discharge 6 kV in indirect mode
Resistance to Fast Transients 2 kV
Resistance to Radiated Fields 10 V/m level 3
Shock Resistance 15 gn 11 ms conforming to IEC 60068-2-7
Signalling Function 2 LEDs
Surge Withstand 6 kV conforming to IEC 61000-4-5
Thermal Protection Adjustment Range 20-38 A
Time Range 0.2...10 s - O-time knob
Tripping Threshold 20...34 A
Vibration Resistance 4 gn conforming to IEC 60068-2-6

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