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Description
LUCBX6BLMain Range TeSys Product name TeSys U Device short name LUCB Product or component type Advanced control unit Product specific application Basic protection and advanced functions, communication Product compatibility LULC07 ASILUFC51 LULC08 LUFV2 LUFDA01 LUFN.. LULC09 ASILUFC5 LUFC00 LULC033 LUFDH11 LULC15 LUFDA10 LULC031 LUFW10 Utilisation category AC 41 AC 43 AC 44 Motor power kW 0. 09 kW at 400 440 V AC 50 60 Hz Thermal protection adjustment range 0.
Main
| Range | TeSys |
| Product name | TeSys U |
| Device short name | LUCB |
| Product or component type | Advanced control unit |
| Product specific application | Basic protection and advanced functions, communication |
| Product compatibility | LULC07 ASILUFC51 LULC08 LUFV2 LUFDA01 LUFN.. LULC09 ASILUFC5 LUFC00 LULC033 LUFDH11 LULC15 LUFDA10 LULC031 LUFW10 |
| Utilisation category | AC-41 AC-43 AC-44 |
| Motor power kW | 0.09 kW at 400...440 V AC 50/60 Hz |
| Thermal protection adjustment range | 0.15…0.6 A |
| [Uc] control circuit voltage | 24 V DC |
| Thermal overload class | Class 10 - frequency limit: 40…60 Hz - temperature compensation: -25…70 °C conforming to IEC 60947-6-2 Class 10 - frequency limit: 40…60 Hz - temperature compensation: -25…70 °C conforming to UL 508 |
Complementary
| Main function available | Protection against overload and short-circuit Protection against phase failure and phase imbalance Earth fault protection Manual reset |
| Mounting mode | Plug-in |
| Mounting location | Front side |
| Control circuit voltage limits | 20...27 V for DC circuit 24 V in operation |
| Typical current consumption | 130 mA at 24 V DC I maximum while closing with LUB12 220 mA at 24 V DC I maximum while closing with LUB32 60 mA at 24 V DC I rms sealed with LUB12 80 mA at 24 V DC I rms sealed with LUB32 |
| Operating time | 35 ms opening with LUB12 for control circuit 35 ms opening with LUB32 for control circuit 70 ms closing with LUB12 for control circuit 70 ms closing with LUB32 for control circuit |
| Load type | 3-phase motor - cooling: self-cooled |
| Tripping threshold | 14.2 x Ir +/- 20 % |
| [Ui] rated insulation voltage | 600 V conforming to UL 508 690 V conforming to IEC 60947-1 600 V conforming to CSA C22.2 No 14 |
| [Uimp] rated impulse withstand voltage | 6 kV IEC 60947-6-2 |
| Safe separation of circuit | 400 V SELV between the control and auxiliary circuits conforming to IEC 60947-1 400 V SELV between the control or auxiliary circuit and the main circuit conforming to IEC 60947-1 |
Environment
| Heat dissipation | 2 W for control circuit with LUB12 3 W for control circuit with LUB32 |
| Immunity to microbreaks | 3 ms |
| Immunity to voltage dips | 70 % / 500 ms conforming to IEC 61000-4-11 |
| Standards | UL 508 type E, with phase barrier EN 60947-6-2 IEC 60947-6-2 CSA C22.2 No 14 type E |
| Product certifications | GOST UL DNV GL ASEFA ABS CCC ATEX LROS (Lloyds register of shipping) BV CSA |
| IP degree of protection | IP20 front panel and wired terminals conforming to IEC 60947-1 IP20 other faces conforming to IEC 60947-1 IP40 front panel outside connection zone conforming to IEC 60947-1 |
| Protective treatment | TH conforming to IEC 60068 |
| Ambient air temperature for operation | -25…70 °C |
| Ambient air temperature for storage | -40…85 °C |
| Operating altitude | 2000 m |
| Fire resistance | 960 °C parts supporting live components conforming to IEC 60695-2-12 650 °C conforming to IEC 60695-2-12 |
| Shock resistance | 10 gn power poles open conforming to IEC 60068-2-27 15 gn power poles closed conforming to IEC 60068-2-27 |
| Vibration resistance | 2 gn, 5…300 Hz, power poles open conforming to IEC 60068-2-6 4 gn, 5…300 Hz, power poles closed conforming to IEC 60068-2-6 |
| Resistance to electrostatic discharge | 8 kV level 3 in open air conforming to IEC 61000-4-2 8 kV level 4 on contact conforming to IEC 61000-4-2 |
| Resistance to radiated fields | 10 V/m 3 conforming to IEC 61000-4-3 |
| Resistance to fast transients | 2 kV class 3 serial link conforming to IEC 61000-4-4 4 kV class 4 all circuits except for serial link conforming to IEC 61000-4-4 |
| Immunity to radioelectric fields | 10 V conforming to IEC 61000-4-6 |
Offer Sustainability
| Sustainable offer status | Green Premium product |
| REACh Regulation | REACh Declaration |
| EU RoHS Directive | Compliant EU RoHS Declaration |
| Mercury free | Yes |
| RoHS exemption information | Yes |
| China RoHS Regulation | China RoHS declaration |
| Environmental Disclosure | Product Environmental Profile |
| Circularity Profile | End of Life Information |
| 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 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Great for overnight or long plane rides
Size: Size 5, Unit Count: 50
We’ve been using these overnight diapers and they’ve worked really well for us. They hold a lot and have helped prevent leaks overnight, which has made a big difference for sleep.
They fit comfortably and don’t seem to bother my baby’s skin, even after wearing them all night.
Pros:
• Great overnight absorbency
• Help prevent leaks
• Comfortable fit
• No irritation for us
Cons:
• Slightly bulkier than regular diapers
• A bit more expensive than daytime options
Overall, these have been really reliable for overnight use and have helped us avoid middle-of-the-night changes.
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Amazing absorption power
Size: Size 3, Unit Count: 66
This is truly an overnight diaper and is worth every penny. They are typically fully loaded by the morning but my little one couldn’t be bothered. Or use them for an extended outing and have peace of mind their little bum won’t be wet. Great diaper.
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Reviewed in the United States on March 22, 2026
★★★★★ 5
Baby sleeps through the night when she wears these
Size: Size 6, Unit Count: 72
I love the Huggies overnight! Can’t even tell you how many times I’ve ordered these. They’re the only diapers my daughter can wear overnight without waking up due to the diaper feeling too wet. She sleeps through the night when she wears these ones. They definitely absorb a lot and don’t have an odor as they fill up.
I always size up when I order these and have never had an issue or leaks
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Reviewed in the United States on June 1, 2026
★★★★★ 5
less early morning blowouts!
Size: Size 7, Unit Count: 68
As a mom of a very active toddler, finding a diaper that actually holds up overnight has been a journey. We recently switched to the Huggies Size 7 Overnites, and overall, I’m really glad we did.
First, the biggest win: way fewer blowouts. Before this, we were dealing with middle-of-the-night sheet changes more often than I’d like to admit. Since using these, that’s pretty much stopped, which alone has been a huge quality-of-life improvement for both me and my toddler.
They’re also super absorbent compared to regular diapers. My little one sleeps long stretches, and these definitely hold more overnight without feeling overly bulky or uncomfortable. The fit is snug but still flexible, which is great because he moves a lot in his sleep.
That said, they’re not 100% perfect for us. We still get the occasional small pee leak, especially if he’s had a lot to drink before bed or sleeps in certain positions. BUT—and this is important—it’s still so much better than what we were dealing with before. Instead of full outfit and bedding changes, it’s usually just slightly damp pajamas.
Overall, I’d absolutely recommend these to other parents dealing with overnight messes. They’ve significantly reduced our stress and cleanup, even if they’re not completely leak-proof for every single night.
If you’re on the fence and struggling with overnight blowouts, these are definitely worth trying.
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Reviewed in the United States on March 26, 2026
★★★★★ 5
Best Overnight Diapers Ever – Dry Mornings Every Time!
Size: Size 3, Unit Count: 66
These Huggies Overnites have been a total lifesaver for us! My baby used to wake up with wet pajamas almost every morning, but since switching to these, no more leaks at all. They’re super soft and gentle on the skin, and even after a full night’s sleep, they stay dry and comfortable. The fit is snug but not tight, and the stretch around the legs keeps everything secure without leaving marks.
I really like that they’re a little thicker than daytime diapers but still breathable. The absorbency is amazing — it easily lasts through 10–12 hours, even for a baby who drinks a lot before bed. They also don’t have a strong smell or weird texture like some other brands.
Honestly, these have made bedtime so much easier. No middle-of-the-night changes, no wet sheets, and a much happier baby in the morning. They’re worth every penny!
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Reviewed in the United States on October 27, 2025