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What issues need to be considered when purchasing molded case circuit breakers


As molded case circuit breakers become more and more popular, they can be used in many industries, and they can also be used in families. However, molded case circuit breakers are related to personal safety and cannot be purchased casually. It's not like ordinary goods, I don't like to throw it away after buying it. If the quality of the molded case circuit breaker is not up to standard, it will cause serious consequences. So what kind of molded case circuit breaker should I buy? Industry insiders believe that consumers should buy machines with certification standards. For example, with the IEC mark and the GB standard of China's low-voltage electrical appliances, these are the most basic. At present, the standards of low-voltage electrical appliances in our country are becoming more and more international, and only machines that meet this standard can be used.

In addition to standard certification, molded case circuit breakers should also have quality certification, such as IS0 international quality system certification, classification society ISO quality system certification, and so on. Maybe you will be very curious, why does the molded case circuit breaker have the quality certification later? Because this quality certification shows that this machine is very reliable, and the performance of moisture resistance and vibration resistance is good. Only by passing these two certifications can it show that the product is It can be used normally. Of course, safety certification is also essential. The safety certification mentioned here is divided into regions, such as the US UL certification and the Great Wall CCEE certification. If you buy domestic molded case circuit breakers, you must have the latter certification.

If you want to buy a qualified molded case circuit breaker, you have to check whether it has the certification standards introduced above. If all certifications are available, it means that the quality and safety performance is qualified. Next, consumers need to choose according to the specific use environment. If the rated current is below 630A and 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-type circuit breaker. If the short-circuit current of the branch circuit is very large, other factors have to be considered. However, there is one thing to pay attention to, that is, the molded case circuit breaker must have leakage protection measures, otherwise it cannot be purchased.

After all the factors are considered, it is necessary to consider the cost performance of the molded case circuit breaker. Different brands of molded case circuit breakers have different prices. All consumers want to buy products with high cost performance, so they have to shop around to see which molded case circuit breaker has the most affordable price and the highest quality. After these basic requirements are met, it is necessary to consider the scalability of the molded case circuit breaker.

The so-called scalability is within a certain range, how is the load of the molded case circuit breaker, and whether it can install modular units to improve its own functions. These things are really important, please think carefully.
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