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Description
LT4730F7SMain 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 100 120 V AC Thermal protection adjustment range 330 A [Ui] rated insulation voltage Power circuit: 600 V AC conforming to CSA Power circuit: 600 V AC
Main
| 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 | 100...120 V AC |
| Thermal protection adjustment range | 3…30 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 |
Complementary
| Network frequency | 50...60 Hz |
| Mounting support | Rail |
| Tripping threshold | 3...25 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 |
Environment
| 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 |
Offer Sustainability
| EU RoHS Directive | Compliant EU RoHS Declaration |
| Toxic heavy metal free | Yes |
| Mercury free | Yes |
| RoHS exemption information | Yes |
| China RoHS Regulation | China RoHS declaration |
| WEEE | The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins |
Contractual warranty
| Warranty | 18 months |
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4.0 ★★★★★
Based on 2266 reviews
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Product Reviews
★★★★★ 5
I will add more books from this author to my collection.
Format: Hardcover
Wonderful history to add to my book collection.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 14, 2025
★★★★★ 5
Essential reading for PowerPoint presenters.
Format: Paperback, Format: Paperback
Cliff shows details how to improve our PowerPoint presentations. He gives concrete and simple steps to transform a message into a targeted presentation. All of us have suffered from presenters who went over their allotted time because they had vital information to give us, yet we still didn't know their main point. Many have seen slide decks burdened with dozens of bullet points. Did the volume of points yield more clarity or did they dull our ability to focus on the message? Probably not. Read Cliff's book. Follow his method and you'll be a more effective presenter.
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Reviewed in the United States on October 17, 2011
★★★★★ 4
Useful with some scientific corroboration
Format: Paperback
Worth it as a primer to slide content and how it inter-relates to the delivery when giving a presentation. Very slightly laboured, like most TV documentaries nowadays - you feel they could move a bit faster (...yeah we got it the first time).
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Reviewed in the United States on December 9, 2012
★★★★★ 5
Simple and streamlined to meet anyone's needs
Format: Paperback
This book rocks! It provide a simple and structured way to define, develop and deliver a "Kick Ass" presentation that you can project or just use from the podium. It bring the audio and visual together to compliment a story to be shared. It has taken the hassel factor out of designing a presentation for anyone on any subject. Thank you!
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Reviewed in the United States on March 11, 2014
★★★★★ 2
Lasting value but degraded presentation
Format: Paperback
I've been a BBP fan since the first edition in 2005. The second edition in 2007 was a significant update and refinement. The latest, 2011 edition, is not worth buying if you already have the second edition -- the information is essentially the same but the 2011 is printed on cheap paper and the contrast between text and background for most of the illustrations is lousy, e.g. black text on a dark grey background, white text on a light grey background. I found it very difficult to read. The online version (O'Reilly Safari Books OnLine) is slightly better because it allows you to magnify the low contrast images which makes them slightly more legible. Thankfully, access to the online version is included with the ink-on-paper book free via a scratch-off, lottery ticket-type insert at the back of the book. If I had to do it again, I'd skip the paper book from Amazon and just purchase electronic access via O'Reilly. This version is more legible and you can print important pages that you might want hard copies of to highlight, mark-up, etc.
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Reviewed in the United States on November 18, 2011