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Description
LV431875Main Range Compact Product name Compact NSX Product or component type Circuit breaker Device short name Compact NSX250N Device application Distribution Poles description 4P Protected poles description 4t 3t + N 2 3t Neutral position Left Network type AC Network frequency 50 60 Hz [In] rated current 250 A at 40 C [Ui] rated insulation voltage 800 V AC 50 60 Hz [Uimp] rated impulse withstand voltage 8 kV [Ue] rated operational voltage 690 V AC 50 60 Hz
Main
| Range | Compact |
| Product name | Compact NSX |
| Product or component type | Circuit breaker |
| Device short name | Compact NSX250N |
| Device application | Distribution |
| Poles description | 4P |
| Protected poles description | 4t 3t + N/2 3t |
| Neutral position | Left |
| Network type | AC |
| Network frequency | 50/60 Hz |
| [In] rated current | 250 A at 40 °C |
| [Ui] rated insulation voltage | 800 V AC 50/60 Hz |
| [Uimp] rated impulse withstand voltage | 8 kV |
| [Ue] rated operational voltage | 690 V AC 50/60 Hz |
| Breaking capacity code | N 50 kA 415 V AC |
| Breaking capacity | 85 kA at 240 V AC 50/60 Hz conforming to UL 508 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 35 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 480 V AC 50/60 Hz conforming to UL 508 36 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 90 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 15 kA at 600 V AC 50/60 Hz conforming to UL 508 |
| [Ics] rated service breaking capacity | 10 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 35 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 36 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 90 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 |
| Suitability for isolation | Yes conforming to EN 60947-2 Yes conforming to IEC 60947-2 |
| Utilisation category | Category A |
| Trip unit name | Micrologic 2.2 |
| Trip unit technology | Electronic |
| Trip unit protection functions | LSoI |
| Pollution degree | 3 conforming to IEC 60664-1 |
Complementary
| Control type | Toggle |
| Mounting mode | Fixed |
| Mounting support | Backplate |
| Upside connection | Front |
| Downside connection | Front |
| Auxiliary contact composition | Without |
| Mechanical durability | 20000 cycles |
| Electrical durability | 10000 cycles 440 V In conforming to IEC 60947-2 10000 cycles 690 V In/2 conforming to IEC 60947-2 20000 cycles 440 V In/2 conforming to IEC 60947-2 5000 cycles 690 V In conforming to IEC 60947-2 |
| Connection pitch | 35 mm |
| Local signalling | LED 105 % Ir LED 90 % Ir LED ready |
| Neutral protection setting | 0.5 x Ir (3t + N/2) 1 x Ir (4t) No protection (3t) |
| Protection type | L : for overload protection (long time) So : for short time short-circuit protection with fixed delay I : for instantaneous short-circuit protection |
| Trip unit rating | 250 A at 40 °C |
| Long time pick-up adjustment type Ir | Adjustable 9 settings |
| Long time pick-up adjustment range | 0.9...1 x Io |
| Long time delay adjustment type | Fixed |
| [tr] long-time delay adjustment range | 11 s at 7.2 x Ir 16 s at 6 x Ir 400 s at 1.5 x Ir |
| Thermal memory | 20 minutes before and after tripping |
| Short-time pick-up adjustment type Isd | Adjustable 9 settings |
| [Isd] short-time pick-up adjustment range | 1.5...10 x Ir |
| Short-time delay adjustment type | Fixed |
| Instantaneous pick-up adjustment type Ii | Fixed |
| Instantaneous pick-up adjustment range | 3000 A |
| Height | 161 mm |
| Width | 140 mm |
| Depth | 86 mm |
| Net weight | 2.8 kg |
| Compatibility code | NSX250 |
Environment
| Overvoltage category | Class II |
| Electrical shock protection class | Class II |
| Standards | EN/IEC 60947 UL 508 |
| Product certifications | CCC EAC Marine |
| IP degree of protection | IP40 conforming to IEC 60529 |
| IK degree of protection | IK07 conforming to IEC 62262 |
| Ambient air temperature for operation | -35…70 °C |
| Ambient air temperature for storage | -55…85 °C |
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 |
| 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
4.1 ★★★★★
Based on 1589 reviews
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Product Reviews
★★★★★ 5
Nice
Color: Grey on Black Fabric
Better than expected
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 5
Quality timepiece
Color: Brown on Brown Rubber, Color: Brown on Brown Rubber
Beautiful watch keeping accurate time. Quality timepiece
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Reviewed in the United States on December 23, 2025
★★★★★ 5
MUY BONITO
Color: Blue on Blue Fabric
EXCELENTE
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Reviewed in the United States on March 30, 2026
★★★★★ 5
Stunning!
Color: Blue on Stainless Steel
Amazing looking watch! Super happy with the design and looks of this piece. I totally love it!
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Reviewed in the United States on August 6, 2025
★★★★★ 5
Great watch, Art Of Horology was a pleasure to deal with
Color: Anthracite on Stainless Steel
What a great watch! There are so many choices out there (even when you filter out a large portion of those you are clearly not interested in :-). Know what you like, use discipline with your cash, be logical, but then even after all that, you will eventually just have to let the right brain kick in and choose based on creativity and intuition. I needed a watch, and wanted a decent one, that looked good. This does all of that in style.
It's not too big, its fairly waterproof, easy to read with clean lines. I wanted lume...
The textured face has an interesting effect, like looking out a window at late dusk.
Don't buy too many things, but when you do be wise. Even the Dalai Lama likes good watches.
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Reviewed in the United States on March 19, 2022