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Description
ZB4BJ7Main Range of product Harmony XB4 Product or component type Head for selector switch Device short name ZB4 Bezel material Chromium plated metal Mounting diameter 22 mm Head type Standard Sale per indivisible quantity 1 Shape of signaling unit head Round Type of operator Left to centre spring return Operator profile Black long handle Operator additional information Non padlockable Operator position information 3 positions + 45 Complementary CAD overall
Main
| Range of product | Harmony XB4 |
| Product or component type | Head for selector switch |
| Device short name | ZB4 |
| Bezel material | Chromium plated metal |
| Mounting diameter | 22 mm |
| Head type | Standard |
| Sale per indivisible quantity | 1 |
| Shape of signaling unit head | Round |
| Type of operator | Left to centre spring return |
| Operator profile | Black long handle |
| Operator additional information | Non padlockable |
| Operator position information | 3 positions +/- 45° |
Complementary
| CAD overall width | 29 mm |
| CAD overall height | 38 mm |
| CAD overall depth | 44 mm |
| Net weight | 0.04 kg |
| Resistance to high pressure washer | 7000000 Pa at 55 °C, distance : 0.1 m |
| Mechanical durability | 1000000 cycles |
| Electrical composition code | C3 for <6 contacts using single blocks in front mounting C4 for <6 contacts using single and double blocks in front mounting C5 for <5 contacts using single blocks in front mounting C6 for <5 contacts using single and double blocks in front mounting C7 for <4 contacts using single blocks in front mounting C8 for <4 contacts using single and double blocks in front mounting C11 for <3 contacts using single blocks in front mounting |
| Device presentation | Basic element |
Environment
| Protective treatment | TH |
| Ambient air temperature for storage | -40…70 °C |
| Ambient air temperature for operation | -40…70 °C |
| Overvoltage category | Class I conforming to IEC 60536 |
| IP degree of protection | IP67 conforming to IEC 60529 IP69 IP69K |
| NEMA degree of protection | NEMA 13 NEMA 4X |
| IK degree of protection | IK06 conforming to IEC 50102 |
| Standards | JIS C8201-5-1 EN/IEC 60947-5-4 EN/IEC 60947-5-5 UL 508 EN/IEC 60947-1 CSA C22.2 No 14 EN/IEC 60947-5-1 JIS C8201-1 |
| Product certifications | UL listed CSA LROS (Lloyds register of shipping) RINA DNV GL BV |
| Vibration resistance | 5 gn (f= 2…500 Hz) conforming to IEC 60068-2-6 |
| Shock resistance | 30 gn (duration = 18 ms) for half sine wave acceleration conforming to IEC 60068-2-27 50 gn (duration = 11 ms) for half sine wave acceleration conforming to IEC 60068-2-27 |
Offer Sustainability
| Sustainable offer status | Green Premium product |
| REACh Regulation | REACh Declaration |
| EU RoHS Directive | Pro-active compliance (Product out of EU RoHS legal scope) EU RoHS Declaration |
| Toxic heavy metal free | Yes |
| Mercury free | Yes |
| RoHS exemption information | Yes |
| China RoHS Regulation | China RoHS declaration |
| Environmental Disclosure | Product Environmental Profile |
| Circularity Profile | End of Life Information |
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
4.5 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Good product for the price.
Size: 27"/QHD/200Hz
This monitor works great. I’ve used it for a while now and I haven’t had issues with this one. Screen size is good and refresh rate isn’t bad either.
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Reviewed in the United States on March 30, 2026
★★★★★ 5
Love These Monitors - Nothing But Love/Performance Here!
First and foremost, yes these are the BEST budget CURVED monitors I felt deservers my time, effort and money. I've been into electronics and computers since the beginning of BBS's. Lol.
I wanted to upgrade and bought the dual setup during Amazon day.
Blew me away. Couple tips I'll share so that you can get the Most out of these monitors.
Tips: 1 - Don't buy CRAP cables. DON'T. Look at the specs, the refresh rates and what they are capable of - speed!!!; 2 - Make sure you have a GOOD quality GPU. If not you won't even be able to enjoy the investment of the these monitors. Invest in a GPU of at LEAST 8GB 1080p min with BOTH DP and HDMI ports.; 3 - With that being said, these monitors use MST!! Daisy chain them together off the DP port for an AMAZING viewing pleasure. If not, you CAN you both ports. Run your main to from the DP port (WAY BETTER quality than the HDMI) and the other using the HDMI 1.2. Again, CABLES ARE IMPORTANT. Crap cables = degregaged signal/sound loss. 4 - When you get it/them make SURE your GPU drivers are up to date. Configure on your operating system and BOOM.. ready to rock.
I researched PLENTY of options and I'm ESTACTIC about these.
I believe the deal I got was UNREAL for the price, QHD monitors and almost ..almost everything I needed. 1440p - incredible.
Ebay/AMZ for a GOOD GPU card and cables.. well worth your time.
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Reviewed in the United States on August 20, 2023
★★★★★ 4
Great value and great monitor
Size: 27"/QHD/200Hz
As a note to new buyers: a chemical-like odor may be emitted from your monitor's exhaust for the first 2-3 weeks--at least mine did. I did some research and this was likely attributed to some cleaning chemicals from the factory, and it is burning off from the heat of the monitor. Simply have good ventilation in your room, and the odor should dissipate in 2-3 weeks. I've had this monitor for over a year now, and there is no odor anymore.
Now, for the actual review: This monitor is great quality for the price! Not perfect, as I've found this monitor doesn't display smooth gradients of dark very well. For example, when I'm in a dark room in a video game, the dark ambient colors show slightly pixelated rather than smoothly blended.
Other than that, this monitor works like a charm! Colors are great, and monitor settings are easily adjustable. One complaint I have is that I can't change the monitor's brightness using the Windows OS' brightness settings--you have to change the brightness/contrast using the monitor's buttons.
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Reviewed in the United States on December 2, 2024
★★★★★ 5
Great quality
Size: 27" 240hz/FHD
I bought this for my son as a second monitor. Graphics are sick! Feels like you're really in the game.
My son absolutely loves it.
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Reviewed in the United States on April 25, 2026
★★★★★ 5
A great value for a state of the art monitor.
I use two of these at my home work station. I am not a gamer, I use these mainly for working on multiple spread sheets and financial programs. The high pixel count of these 8k video displays makes it easy to read the screens. I have Windows 11 on my computer, so installation of the 3 monitors was easy. I have my computer monitor set at 150% and these two monitors set at 125% magnification. All three are at eye level. They came with display port cables which my computer and hubs do not have, so I in a 8K HDMI cable for each. I do play a few videos, and those look great. The curved screen helps in keeping all the monitor sort of equidistant from my eyes which helps everything on the 3 screens stay in focus for my 80 year old eyes. I have reflections on my computer screen, but both of these Koorui monitors are reflection free.
I first went to Costco to pick up a monitor and this allowed me to zero in that I wanted the 8k and curved screen in a 24 or 27 inch monitor. They did not have that combination. I tried just one of the Koorui monitors along with my older monitor. The Koorui was so far superior that I quickly purchased the second one and tossed out my outdated one. I use these for hours each day, and at this low price I feel I can easily justify this investment. I feel secure these monitors will be with me for a long time.
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Reviewed in the United States on October 27, 2023
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