LT4760BS
ELEC RLY 5A 60A 24V ACDC 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 24V AC/DC, 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
Overload Imax > Isetting Sensitivity to phase failure Locked rotor, mechanical jamming I > 3 x Isetting
[Us] rated supply voltage
24 V AC 24 V DC
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 60947 IEC 60255-6
product certifications
CSA UL
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
7 cm
Package 1 Width
8 cm
Package 1 Length
8.7 cm
Package 1 Weight
191 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
3.525 kg
Warranty
18 months
Document Links
Datasheet
Technical Data