With the more and more popularity of molded case circuit breakers, many industries can be used, family can also be used.But the molded case circuit breaker is related to personal safety, can not be bought casually.It is not like ordinary goods, bought do not like to throw away directly.If the quality of the molded case circuit breaker is not up to standard, it will cause very serious consequences.So what kind of molded case circuit breaker should you buy?Industry insiders say consumers should buy machines with certified standards.For example, it has the IEC logo and the GB standard of China's low-voltage electrical appliances, which are the most basic.
In addition to the standard certification, molded case circuit breakers should also have quality certification, such as ISO international quality system certification, classification society ISO quality system certification and so on.Perhaps you will be very curious, molded case circuit breaker why there is the following quality certification?Because this quality certification shows that this machine is very reliable, and moisture-proof and shockproof performance are good, only through these two certification, it shows that the product can be used normally.Of course, safety certification is also essential, the safety certification here is divided into regions, such as the United States UL certification, the Great Wall CCEE certification, if you buy the domestic molded case circuit breaker, there must be the back of the certification.
If you want to buy qualified molded case circuit breakers, it is necessary to check whether it has the certification standards described above.If all certifications are present, the quality and safety features are acceptable.Next, consumers need to choose according to the specific use environment.If the rated current is under 630A, the short circuit current is not very large, you can choose a molded case circuit breaker.If the rated current is large, it is best to choose a frame circuit breaker.If the short circuit current of the branch is large, other factors must be considered.However, there is a point to pay attention to, that is, the molded case circuit breaker must have leakage protection measures, otherwise can not be purchased.
After all factors are considered, it is necessary to consider the cost performance of the MCCB.Different brands of molded case circuit breaker, the price is not the same.All consumers want to buy cost-effective products, it is necessary to shop around to see which molded case circuit breaker price is the most serious problem, the highest quality.After these basic requirements are met, it is necessary to consider the expansibility of the MCCB.
The so-called expansibility is within a certain range, how is the load of the molded case circuit breaker, can you install the module unit to improve its function.These things are really important. Please think about them carefully.
