LT4760F7S
ELEC RLY 5 A 60A 110V AC MAN
Trade Price
£102.94
Per
1
Unit
EA
Pack Quantity
1
Information
TeSys LR47 electronic overcurrent relay, 60A/690V, with manual reset, to be supplied with 100-120V AC, for protection of motors with a rated current 5-50A. It provides 3 dials to adjust the protection, LOAD (5-60A) 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 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.
Technical Specifications
Range
TeSys
Product name
TeSys LT
Product or component type
Electronic over current relay
Device short name
LT47
Device application
Protection
Relay application
Sensitivity to phase failure Locked rotor, mechanical jamming I > 3 x Isetting Overload Imax > Isetting
[Us] rated supply voltage
100...120 V AC
Thermal protection adjustment range
5…60 A
[Ui] rated insulation voltage
Power circuit: 600 V AC conforming to CSA Power circuit: 600 V AC conforming to UL Power circuit: 690 V AC conforming to IEC 60947-4-1
Network frequency
50...60 Hz
Mounting support
Rail
Tripping threshold
5...50 A
Electromagnetic compatibility
Resistance to electrostatic discharge: 8 kV in open air conforming to IEC 61000-4-2 Resistance to electrostatic discharge: 6 kV in direct mode conforming to IEC 61000-4-2 Conducted emission: class A conforming to EN 55011 Immunity to electromagnetic interference: 10 V/m conforming to IEC 61000-4-3 Immunity to fast transients: 2 kV conforming to IEC 61000-4-4 Surge withstand: 6 kV conforming to IEC 61000-4-5 Conducted HF disturbances: 10 V conforming to IEC 61000-4-6
Auxiliary contact composition
1 NO + 1 NC
[Ith] conventional free air thermal current
3 A for signalling circuit
Associated fuse rating
3 A gG for signalling circuit 3 A BS for signalling circuit
[Uimp] rated impulse withstand voltage
6 kV
Time range
0.5..30 s - control type D-time 0.3...10 s - control type O-time
Local signalling
1 LED (green) 1 LED (red)
Control type
push-button: reset electrical: reset
Connections - terminals
Signalling circuit: screw clamp terminals 1 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 2 1…2.5 mm² - cable stiffness: flexible with cable end Signalling circuit: screw clamp terminals 2 1…2.5 mm² - cable stiffness: flexible without cable end
Tightening torque
Signalling circuit: 1.7 N.m M3.5
height
70.3 mm
Width
71 mm
Depth
77.2 mm
Net weight
0.192 kg
standards
IEC 60255-6 IEC 60947
product certifications
UL CSA
Protective treatment
TH conforming to IEC 60068
IP degree of protection
IP20 conforming to IEC 60529 IP20 conforming to VDE 0106
Ambient air temperature for operation
-25…60 °C without derating conforming to IEC 60947-4-1
Ambient air temperature for storage
-30…80 °C
Operating altitude
2000 m
Mechanical robustness
Shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 Vibrations: 4 gn conforming to IEC 60068-2-6
Dielectric strength
2 kV at 50 Hz conforming to IEC 60255-5
Unit Type of Package 1
PCE
Number of Units in Package 1
1
Package 1 Height
6.5 cm
Package 1 Width
7.8 cm
Package 1 Length
8.5 cm
Package 1 Weight
200 g
Unit Type of Package 2
S02
Number of Units in Package 2
16
Package 2 Height
15 cm
Package 2 Width
30 cm
Package 2 Length
40 cm
Package 2 Weight
3.632 kg
Warranty
18 months
Document Links
Datasheet
Technical Data