Overload relay, TeSys LRD, motor protection,

0.1A to 0.5A, 3 phase, electronic thermal

✔️Environmental performance of the product


TeSys LR9D electronic overload relay, 0.5A/690V, thermal setting range 0.1-0.5A, selectable tripping class 5-10-20-30, for protection of 3-phase motors up to 0.12kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, buttons for test, stop and reset as well as manual-automatic reset selector, dipswitches for tripping class selection, 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 contactor, with use of the terminal block LAD7B205 (to be ordered separately). Multi-standards certified (IEC, UL, CSA, CCC), Green Premium compliant (RoHs/Reach).


Range TeSys
Product name TeSys LRD
device short name LR9D
Product or component type Electronic thermal overload relay
Relay application Motor protection
Product compatibility LC1D09
Thermal overload class Class 5…30
Thermal protection adjustment range 0.1…0.5 A
Power consumption in W 300 mW
Mounting support Under contactor
Plate, with specific accessories
Rail, with specific accessories
[Ue] rated operational voltage 690 V for power circuit
660 V for signalling circuit
[Ui] rated insulation voltage Power circuit: 1000 V
Signalling circuit: 690 V
Tripping threshold 1.25 In conforming to IEC 60947-4-1
Control type Red push-button: stop and manual reset
White 2 microswitches: adjustable trip class
Red knob: automatic reset
White dial: full-load current adjustment
Time range 1.5...4 min - automatic reset time
[Ith] conventional free air thermal current 5 A for signalling circuit
Associated fuse rating 5 A gG for signalling circuit
5 A BS for signalling circuit
[Uimp] rated impulse withstand voltage 6 kV
Phase failure sensitivity Phase difference > 40% 3 s conforming to IEC 60947-4-1
Electromagnetic compatibility Surge withstand: 2 kV common mode conforming to IEC 61000-4-5
Resistance to electrostatic discharge: 8 kV conforming to IEC 61000-4-2
Immunity to radiated radio-electrical interference: 10 V/m conforming to IEC 61000-4-3
Immunity to fast transients: 2 kV conforming to IEC 61000-4-4
Connections - terminals Control circuit: screw clamp terminals 1 cable 2.5 mm² - cable stiffness: solid or flexible - without cable end
Power circuit: screw clamp terminals 1 cable 16 mm² - cable stiffness: solid or flexible - without cable end
Tightening torque Control circuit: 0.8 N.m on screw clamp terminals
Power circuit: 3.1 N.m on screw clamp terminals
Height 72.5 mm
Width 45 mm
Depth 79.9 mm
Product weight 0.18 kg
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
Product certifications IECEE CB Scheme
IP degree of protection IP20 front face conforming to IEC 60529
Ambient air temperature for operation -25…70 °C conforming to IEC 60255-8
Ambient air temperature for storage -55…80 °C
Operating altitude 2000 m without derating
Mechanical robustness Vibrations 10...150 Hz: 6 Gn conforming to IEC 60068-2-6
Shocks 11 ms: 15 gn conforming to IEC 60068-2-7
Dielectric strength 6 kV 50 Hz conforming to IEC 60255-5
Packing Units
Unit Type of Package 1 PCE
Number of Units in Package 1 1
Package 1 Height 5.5 cm
Package 1 Width 7.5 cm
Package 1 Length 9.1 cm
Package 1 Weight 209.0 g
Unit Type of Package 2 S02
Number of Units in Package 2 30
Package 2 Height 15.0 cm
Package 2 Width 30.0 cm
Package 2 Length 40.0 cm
Package 2 Weight 6.725 kg
Unit Type of Package 3 P06
Number of Units in Package 3 480
Package 3 Height 50.0 cm
Package 3 Width 80.0 cm
Package 3 Length 60.0 cm
Package 3 Weight 121.86 kg

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