Product Introduction
Fixed air circuit breaker is an efficient power protection device mainly used in medium and low voltage distribution systems, which can effectively prevent electrical equipment from being damaged due to overload, short circuit and other faults.
This device uses air as the arc extinguishing medium and has the characteristics of simple structure and reliable operation. The fixed design makes installation and maintenance more convenient, suitable for widespread use in industrial and commercial fields.
It can quickly cut off the current, ensure the stable operation of the power system, and improve electrical safety, making it an indispensable and important equipment in modern power systems.
Structure and Parameters
| Type | KACB1600 | KACB2500 | KACB3200 | KACB4000 | KACB6300 |
| Rated current Inm(A) | 200,400, 630,800,1000, 1250,1600 |
400,630,800, 1000,1250,1600, 2000,2500 |
2000,2500, 2900,3200 |
3200,3600, 4000 |
4000,5000, 6300 |
| Rated insulation voltage Ui(V) | 1250 | ||||
| Rated impulse withstand voltage Uimp(kV) |
12 | ||||
| Power frequency withstand voltage U(V)1min | 3500(2Ui+1000) | ||||
| Utilization category as per IEC60947-2 |
AC-3 | ||||
| Number of Poles | 3P,4P | 3P | |||
| Rated current Inm(A) for N pole | 100%In | 50%In | / | ||
| Rated working voltage Ue(VAC) | 400V / 690V | ||||
| Arc distance(mm) | 0 | ||||
| Full breaking time (without additional delay) (ms) |
30 | ||||
| Connecting time (ms) | 70(max) | ||||
We are a professional manufacturer of air circuit breakers, and besides this one, there are other types to choose from
KACB series conventional circuit breaker is designed with high precision,The instantaneous,short-delay, long-delay,single-phase grounding and other protection features are excellent. The variety of intelligent controllers could be equipped with communication interface to provide different functions.
WHY CHOOSE US
Our factory has a land area of 10000 square meters, automated assembly lines, and an air circuit breaker laboratory. Our engineers specialize in upgrading and testing ACBs.
The requirement of quality is our first goal, and at the same time, we will provide customers with the most cost-effective prices to reduce your procurement costs.
Our market
Our fixed air circuit breaker products are renowned worldwide for their quality and have established a unique brand influence in the Middle East and Southeast Asia.
We actively participate in major exhibitions and attract numerous customers. Many customers sign orders on the spot after gaining a deep understanding of our products
ONESTOP has strong productivity and high-quality services to collaborate with us. Customize your air circuit breaker solution to reduce your costs
