TeSys LT47 electronic over current relays-automatic- 3...30 A - 200...240 V AC
Description
TeSys LR47 electronic overcurrent relay, 30A/690V, with automatic 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, 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.
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 | automatic: 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 | sensitivity to phase failure |
| Thermal Protection Adjustment Range | 3-30 A |
| Time Range | 1...120 s - control type R-time |
| Tripping Threshold | 3...25 A |