As a professional manufacturer and supplier in China, Comewill provides high-performance Side-mounted Indoor High Voltage Vacuum Circuit Breaker solutions designed for modern medium-voltage power systems. Engineered with advanced vacuum interruption technology and a stable spring-operated mechanism, this circuit breaker offers dependable protection, efficient switching, and long-lasting operational safety for industrial, commercial, and infrastructure applications.
We put this breaker together by taking the best of foreign tech and mixing it with our decades of hands-on experience building circuit breakers. The main circuit runs longitudinally, paired with a top-notch spring-operated mechanism and fixed sealing pole tech – little design choices that make it tough enough for whatever your procurement projects throw at it. When you buy from Welcome Electric, you’re getting something compact, super reliable, built to last, and easy to run maintenance-free for its whole lifespan.
Pick our Side-mounted Indoor High Voltage Vacuum Circuit Breaker, and you’ll see the difference in its electrical and mechanical performance: the mechanism stays steady, it lasts forever, and that cuts down on downtime and replacement costs. The fixed sealed pole main circuit handles different environments better and keeps insulation reliable, while the strong mechanical and electronic parts stretch out its life – meaning you really can run it without maintenance, no fuss.
Whether you’re stocking up for industrial power grids, commercial buildings, or infrastructure jobs, Welcome (Wenzhou) Electric Co., Ltd. is the supplier you can count on for quality medium voltage switchgear. Shoot us a message today to ask for a quote, grab a sample, or place a bulk order for this breaker that’s leading the industry.
Our quality Side-mounted Indoor High Voltage Vacuum Circuit Breaker uses solid-sealed poles from top international brands for its core components – the vacuum interrupter and main conductive circuit are fused into a single sealed unit, so it’s far more resistant to impact, dust, and condensation buildup.
This breaker holds up great in tough environments, which cuts down a lot on day-to-day operation and maintenance costs for your team.
The operating mechanism is built right into the breaker body, and we’ve put it through full type testing to make sure it performs reliably.
It’s rated for E2 electrical life and M12 mechanical life – that means it’ll keep running smoothly for years, no matter how often you use it.
Ambient temperature: Max +40°C, Min -15°C
Humidity: Daily average relative humidity ≤ 95%; Monthly average ≤ 90%; Daily average vapor pressure ≤ 22×10⁻³MPa; Monthly average vapor pressure ≤ 1.8×10⁻³MPa
Altitude: Up to 1000m
Earthquake resistance: Can withstand up to 8-degree intensity
Air quality: No heavy pollution from dust, smoke, corrosive/flammable gases, steam, or salt spray
Note: If your working environment goes beyond any of these specs, be sure to get in touch with us first – we’ll work out the right setup for your site.
|
|
Item |
Unit |
Data |
||
|
1 |
Rated voltage |
|
12 |
||
|
2 |
Maximum working voltage |
kv |
12 |
||
|
3 |
Rated current |
A |
630 1250 |
630 1250 |
|
|
4 |
Rated short-circuit break current |
kA |
20/25 |
31.5 |
|
|
5 |
Rated short-circuit close current (peak value) |
kA |
50/63 |
80 |
|
|
6 |
Rated withstand current (peak value) |
kA |
50/63 |
80 |
|
|
7 |
4S Rated little withstand current |
kA |
20/25 |
31.5 |
|
|
8 |
Rated insulation level |
Industrial frequency withstand voltage |
kA |
42/48 |
|
|
Thunder impulse withstand voltage |
75/85 |
||||
|
9 |
Rated operation order |
|
Off-0.3S on and off-180S-on and off |
||
|
10 |
Mechanical life |
times |
10000 |
||
|
11 |
Rated short-circuit current break and close time |
times |
50 |
||
|
12 |
Speak and move organization amount assign the current of the floodgate(DC) |
V |
AC.DC.110,220 |
||
|
13 |
Speak and move organization amount equal to the current of the floodgate(DC) |
V |
AC.DC 110,220 |
||
|
14 |
Switching distance of the contact |
mm |
>11 |
||
|
15 |
Ultra journey(touches the head spring and compress length) |
mm |
4+/-0.5 |
||
|
16 |
Three-phase breaking into shut floodgate sex of the same period |
ms |
<2 |
||
|
17 |
Touch the head and shut a floodgate of time of bouncing |
ms |
<2 |
||
|
18 |
Average speed of breaking brake |
m/s |
0.9~1.7 |
||
|
19 |
Average speed of closing brake |
m/s |
0.6~1.0 |
||
|
20 |
Time of breaking brake |
Operate it under the voltage highest |
s |
<0.05 |
|
|
|
Operate it under the voltage lowest |
<0.08 |
|||
|
21 |
Time of closing brake |
s |
<0.1 |
||
|
22 |
Each the resistance of main return circuit |
u Ω |
<45 |
||
|
23 |
Allowance abrasion cumulated thickness of the moving and stationary contact |
mm |
3 |
||
Q: Could I have prices of your products?
A: Sure! Just send us your inquiry here, and we’ll get back to you with a quote within 24 hours. No delays.
Q: Can I get a sample before the bulk order?
A: Yep, samples are available for you to test and check the quality. Mixed samples are fine too, no problem.
Q: Can we print our logo/ company name on products?
A: Of course! We do OEM. You just need to provide us with your brand authorization, and we’ll handle it.
Q: Do you accept product customization?
A: Sure thing. Send us your specific drawings or parameters, and we’ll evaluate them first before giving you a quote.
Q: What is the lead time?
A: It depends on how many you order. Usually, it’s 7 to 20 days after we receive your payment.
Q: What is your Trade Terms?
A: We accept EXW, FOB, CIF, FCA – whatever works for your side.
Q: What is your payment method?
A: T/T, Western Union, Paypal, irrevocable L/C at sight – these are all okay for us.
Q: Do you inspect the finished products?
A: Absolutely. Our QC team checks every step of production, and all finished products are inspected before shipping. We’ll also send you the inspection report for your reference beforehand.
Q: How to solve the quality problems after sales?
A: Just take some photos of the quality issue and send them to us. We’ll check and confirm it, and give you a satisfactory solution within 3 days.
If you need a quote or more information about this product, please send us a message and we will get back to you within 1 working day.
Address
No.777 Wanweng Road, Wengyang Sub-district, Yueqing City, Wenzhou City, Zhejiang Province, China
Tel
