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Picture of Electronic over current relays, TeSys LT47, automatic, 3 to 30A, 24VAC/DC
SKU:

LT4730BA

Electronic over current relays, TeSys LT47, automatic, 3 to 30A, 24VAC/DC

$235.97
Available for Shipping : 05-Dec-2024
Electronic over current relays, TeSys LT47, automatic, 3 to 30A, 24VAC/DC
  • The device has a reset button, a test/stop button, 2 LED indicators (Run/Trip)
  • Manual or automatic reset depending on model
  • Reduces the production loss and associated downtime
  • Simple setting and signaling features
  • Compact and easy integration into motor starter functions
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Manufacturer: Schneider Electric
Instruction sheet
Catalogue
End of life manual
Product Page Link
Product Data Sheet
TeSys LR47 electronic overcurrent relay, 30A/690V, with automatic reset, to be supplied with 24V AC/DC, for protection of motors with a rated current 3-25A. It provides 3 dials to adjust the protection, LOAD (3-30A) for the overcurrent level, O-TIME (0.3-10sec) for the acceptable duration of the overcurrent, R-TIME (1-120sec) for the automatic reset delay. In addition, the device trips when there is a missing phase during more than O-TIME. The device has a reset button, a test/stop button, 2 LED indicators (Run/Trip), 2 auxiliary contacts 1NO+1NC for fault signalling. Settings can be locked by sealing the transparent cover. DIN rail mounting, without power terminals (currents monitored by 2 current transformers crossed by the motor cables). Multi standards certified (IEC, UL, CSA, CCC, EAC), it conforms to RoHS/REACh regulation.

Products specifications

Attribute name Attribute value
Main
Device short name LT47
Device application protection
[Us] rated supply voltage 24 V DC, 24 V AC
[Ui] rated insulation voltage power circuit: 690 V AC conforming to IEC 60947-4-1, power circuit: 600 V AC conforming to UL, power circuit: 600 V AC conforming to CSA
Range TeSys
Product name TeSys LT
Product or component type electronic over current relay
Relay application sensitivity to phase failure, overload Imax > Isetting, locked rotor, mechanical jamming I > 3 x Isetting
Thermal protection adjustment range 3-30 A
Range of product TeSys LT electronic over current relays
Complementary
Depth 77.2 mm
Width 71 mm
Compatibility code LT47
Mounting support rail
Control type automatic: reset
Tightening torque signalling circuit: 1.7 N.m M3.5
Tripping threshold 3...25 A
Local signalling 1 LED (red), 1 LED (green)
Connections - terminals signalling circuit: screw clamp terminals 2 1-2.5 mm² - cable stiffness: flexible without cable end, signalling circuit: screw clamp terminals 2 1-2.5 mm² - cable stiffness: flexible with cable end, signalling circuit: screw clamp terminals 1 1-2.5 mm² - cable stiffness: flexible without cable end, signalling circuit: screw clamp terminals 1 1-2.5 mm² - cable stiffness: flexible with cable end
[Uimp] rated impulse withstand voltage 6 kV
Net weight 0.192 kg
Associated fuse rating 3 A BS for signalling circuit, 3 A gG for signalling circuit
Electromagnetic compatibility conducted HF disturbances: 10 V conforming to IEC 61000-4-6, surge withstand: 6 kV conforming to IEC 61000-4-5, immunity to fast transients: 2 kV conforming to IEC 61000-4-4, immunity to electromagnetic interference: 10 V/m conforming to IEC 61000-4-3, conducted emission: class A conforming to EN 55011, resistance to electrostatic discharge: 6 kV in direct mode conforming to IEC 61000-4-2, resistance to electrostatic discharge: 8 kV in open air conforming to IEC 61000-4-2
[Ith] conventional free air thermal current 3 A for signalling circuit
Auxiliary contact composition 1 NO + 1 NC
Height 70.3 mm
Network frequency 50...60 Hz
Time range 0.3...30 s - control type O-time, 1...120 s - control type R-time
Environment
Operating altitude 2000 m
Protective treatment TH conforming to IEC 60068
Ambient air temperature for storage -30-80 °C
IP degree of protection IP20 conforming to VDE 0106, IP20 conforming to IEC 60529
Dielectric strength 2 kV at 50 Hz conforming to IEC 60255-5
Ambient air temperature for operation -25-60 °C without derating conforming to IEC 60947-4-1
Standards IEC 60947, IEC 60255-6
Mechanical robustness vibrations: 4 gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7
Product certifications UL, CSA
Packing Units
Unit Type of Package 1 1
Number of Units in Package 1 1
Package 1 Height 6.6 cm
Package 1 Width 8.3 cm
Package 1 Length 7.6 cm
Package 1 Weight 193.0 g
Unit Type of Package 2 2
Number of Units in Package 2 16
Package 2 Height 15.0 cm
Package 2 Width 30.0 cm
Package 2 Length 40.0 cm
Package 2 Weight 3.403 kg

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