TeSys LT47 electronic over current relays - manual - 3...30 A - 200...240 V AC

LT4730M7S
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Description

TeSys LR47 electronic overcurrent relay, 30A/690V, with manual reset, to be supplied with 200-240V AC, 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, 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.

Product Details

[ui] Rated Insulation Voltage power circuit: 600 V AC conforming to CSA
[uimp] Rated Impulse Withstand Voltage 6 kV
[us] Rated Supply Voltage 200...240 V AC
Ambient Air Temperature for Operation -25-60 °C without derating conforming to IEC 60947-4-1
Ambient Air Temperature for Storage -30-80 °C
Compatibility Code LT47
Control Type push-button: reset
Depth 77.2 mm
Device Application protection
Device Short Name LT47
Dielectric Strength 2 kV at 50 Hz conforming to IEC 60255-5
Electromagnetic Compatibility resistance to electrostatic discharge: 8 kV in open air conforming to IEC 61000-4-2
Height 70.3 mm
Ip Degree of Protection IP20 conforming to IEC 60529
Mechanical Robustness shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7
Mounting Support rail
Net Weight 0.192 kg
Network Frequency 50...60 Hz
Product Certifications UL
Product Name TeSys LT
Product or Component Type electronic over current relay
Range TeSys
Range of Product TeSys LT electronic over current relays
Standards IEC 60255-6
Tightening Torque signalling circuit: 1.7 N.m M3.5
Width 71 mm
Connections - Terminals signalling circuit: screw clamp terminals 1 1-2.5 mm² - cable stiffness: flexible with cable end
[ith] Conventional Free Air Thermal Current 3 A for signalling circuit
Associated Fuse Rating 3 A gG for signalling circuit
Auxiliary Contact Composition 1 NO + 1 NC
Local Signalling 1 LED (green)
Operating Altitude 2000 m
Protective Treatment TH conforming to IEC 60068
Relay Application locked rotor, mechanical jamming I > 3 x Isetting
Thermal Protection Adjustment Range 3-30 A
Time Range 0.5..30 s - control type D-time
Tripping Threshold 3...25 A

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