The ACB Circuit Breaker, namely the Air Circuit Breaker, holds a crucial position in the low - voltage power distribution system. Its core function is to effectively control and protect the current under normal and specific abnormal circuit conditions. Relying on its reliable working principle, excellent performance parameters and wide environmental adaptability, the ACB circuit breaker plays an indispensable role in protection and control in various low - voltage power distribution systems, and is a key device to ensure the safe and stable operation of the power system.
Analyzed from the aspect of working principle, the ACB circuit breaker mainly makes the contact system, the arc extinguishing system and the release work in coordination. During normal operation, the contacts are closed to conduct current. When faults such as overload, short circuit or undervoltage occur in the circuit, the release senses the abnormal signals and quickly triggers the operating mechanism to separate the contacts, thus cutting off the circuit. The arc extinguishing system quickly extinguishes the arc at the moment when the contacts are separated, preventing the arc from continuously burning and causing equipment damage and safety accidents.
In terms of performance parameters, the ACB circuit breaker has remarkable characteristics. The rated current ranges from 200A to 6300A, which can meet the load requirements of power systems of different scales. Its short - circuit breaking capacity is extremely strong and can cut off short - circuit currents as high as dozens of kiloamperes or even higher within a short time to ensure the safety of the system. For example, in the commonly seen 400V low - voltage power distribution system in the industrial field, the ultimate short - circuit breaking capacity of some high - performance ACB circuit breakers can reach over 100kA. At the same time, it also has good thermal stability and can maintain its own structural and performance stability during long - term overload, avoiding failure due to overheating.
Regarding the product usage conditions, the ACB circuit breaker is applicable to power distribution networks with an alternating current of 50Hz or 60Hz. Its rated operating voltage is usually at common low - voltage levels such as 380V, 400V and 660V. When selecting the type, parameters such as the rated current and short - circuit current of the line need to be accurately matched. As for the usage environment, the ACB circuit breaker can adapt to various environmental conditions. However, in high - temperature environments, derating operation needs to be considered to ensure stable performance. In high - humidity environments, models with moisture - proof designs should be selected to prevent a decrease in insulation performance. In harsh environments with dust and corrosive gases, special protective casings need to be equipped to avoid the erosion of internal components and maintain normal operation.
Main technical parameter
| Item |
Unit |
Argument |
| Rated voltage |
V |
AC, 380V, 400V, 660V 50/60Hz |
| Rated Current |
Kv |
12(High Voltage Side) |
| Shell Level Rated Current |
mA |
2000/3200/4000/6300 |
| Rated Short Circuit Breaking Capacity |
kA |
50 - 150(Varies by model) |
| Rated Service Short Circuit Breaking Capacity |
|
Generally 70% - 100% of the "rated short circuit breaking capacity" (Varies by model) |
| Rated Short Time Withstand Current |
kA/1S |
30, 50, 85, etc. (Varies by model) |
Normal Service Condition
Altitude: not more than 2000m, high altitude products can be customized
Ambient temperature: -5°C - +40°C
Installation location: It is recommended to select a location without fire risk, explosion risk, conductive dust, chemical corrosive gas and severe vibration. If it exceeds the above conditions, you can negotiate with the company for customization.
Installation conditions: Can be installed vertically or horizontally
Main Product
We were established on April 9, 2002, located in Yuanjiatai Industrial Park, Xin 'andu Street, Dongxihu District, Wuhan City. We are an electrical manufacturing enterprise integrating manufacturing, production and trade. The company specializes in the research and development, manufacturing and service of high and low voltage switchgear, capacitance compensation equipment, box-type substation, outdoor ring cage, dense busbar trough and other products. In 2003, we are certified to ISO9001, ISO45001 and SO14001. In 2021, we were approved as the Hubei Province High-tech Enterprise. Between 2002 and 2003 we obtained the Wuhan City "contract and credit" enterprise, with a total of 12 new patented technologies, the main products obtained the national compulsory product 3C certifcation and type test report. In recent years, the company's products have been widely used in power, real estate chemical and other industries, and have been unanimously recognized by users. The company always adhere to the "quality of truth", "striving to perfection" attitude to serve the user, with its core value "integrity, win-win" we gain deep insights into our customers' business requirements. We continuously develop high-quality products and create benchmark projects to consistently deliver greater power to the world!
Are you a factory or a trading company?
We are a professional factory engaged in the manufacture of complete sets of equipment for the power industry. We are also one of the high-quality suppliers of the State Grid Corporation of China.
Can you provide customized product services?
Our professional technical team will design products according to your drawing requirements and actual conditions. We can also provide OEM/ODM services.
How long is your production lead time?
It depends on the product requirements and quantity. Generally it takes 5-10 days.
How to confirm payment?
We accept wire transfer, Paypal and other payment methods. Our payment terms are 30% T/T advance payment and 70% final payment.
How is your after-sales service?
We will provide installation instructions and have a professional production and installation team to provide online installation guidance. If any problem occurs, please provide on-site photos and instrument information. We will respond as quickly as possible and provide a suitable solution within 1 day.
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