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SCHNEIDER ELECTRIC Thermal Overload Relay

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Main
Range of product TeSys D thermal overload relays
Product or component type Differential thermal overload relay
Device short name LR9D
Relay application Motor protection
Product compatibility LC1D115
LC1D150
NSX circuit breaker
Network type AC
Overload tripping class Class 20 conforming to IEC 60947-4-1
Class 10 conforming to IEC 60947-4-1
Signalling function Alarm
Thermal protection adjustment range 60...100 A
[Ui] rated insulation voltage 600 V power circuit conforming to UL
600 V power circuit conforming to CSA
1000 V power circuit conforming to IEC 60947-4-1
Complementary
Network frequency 50...60 Hz
[Us] rated supply voltage 24 V DC
Supply voltage limits 17...32 V
Mounting support Rail
Direct on contactor
Tripping threshold 1.12 +/- 0.06 In de-energisation conforming to IEC 60947-4-1
1.05 +/- 0.06 In alarm conforming to IEC 60947-4-1
[Ith] conventional free air thermal current 5 A for signalling circuit
Associated fuse rating 5 A gG for signalling circuit
[Uimp] rated impulse withstand voltage 6 kV conforming to IEC 61000-4-5
Phase failure sensitivity Tripping in 4 s +/- 20 % conforming to IEC 60947-4-1
Temperature compensation -20...70 °C
Switching capacity in mA 0...150 mA
Voltage drop <= 2.5 V closed state
Connections - terminals Alarm circuit: screw clamp terminals 1 cable(s) 0.5...1.5 mm² - cable stiffness: flexible - without cable end
Control circuit: screw clamp terminals 2 cable(s) 0.5...1.5 mm² - cable stiffness: flexible - without cable end
Control circuit: screw clamp terminals 1 cable(s) 0.5...1.5 mm² - cable stiffness: flexible - without cable end
Power circuit: bars
Tightening torque Control circuit: 1.2 N.m - on screw clamp terminals
Power circuit: 18 N.m - on bars screw : M8
Alarm circuit: 0.45 N.m - on screw clamp terminals
Depth 132 mm
Product weight 0.9 kg
Quantity per set Set of 10
Environment
Standards EN 60947-4-1
IEC 255-17
IEC 255-8
IEC 60947-4-1
VDE 0660
Product certifications CSA 22-2
UL 508
Protective treatment TH
IP degree of protection IP20 conforming to VDE 0106
IP20 conforming to IEC 60529
Ambient air temperature for operation -20...55 °C conforming to IEC 60255-8
Ambient air temperature for storage -40...85 °C
Operating altitude <= 2000 m without derating
Mechanical robustness Shocks 13 Gn for 11 ms IEC 60068-2-7
Vibrations 2 Gn, 5...300 Hz IEC 60068-2-6
Dielectric strength 6 kV at 50 Hz conforming to 60255-5