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how to choose the moulded case circuit breakers

Views: 66     Author: Site Editor     Publish Time: 2017-01-12      Origin: Site

With the circuit breaker is becoming increasingly popular, many industries can use the family can also be used. But the moulded case circuit breakers relates to personal safety, can’t casually buy. If the quality of circuit breaker does not pass, will have very serious consequences. What MCCB You should buy ? The industry believes that consumers should buy a certification standard machine. For example, with the IEC flag and China low-voltage electrical appliances GB standards, these are the most basic.

Want to buy MCCB quality, you have to check it is not described above. If all certified certification standards are quality and safety performance is qualified. Next, consumers need to choose according to the specific use of the environment here. If the rated current under 630A, the current is not large short circuit breaker, can choose the plastic case. If the rated current is large, so the best choice of circuit breaker frame. If the branch short-circuit current, you have to consider other factors. But there is one point to note is that circuit breaker must have leakage protection measures, otherwise can not buy.

When all the factors are considered finished, must consider the price of MCCB MCCB. Different brands, the price is not the same. So consumers want to buy cost-effective products, it is better than three, look at the most affordable price, MCCB which of the highest quality. After these basic requirements are satisfied, you have to consider the extension of a MCCB.

KNM1 series moulded case circuit breaker comply with demands of following standards:1IEC60947-1 and GB/T14048.1-2000 general2IEC60947-2 and GB/T14048.1-2001 low voltage breakers3IEC60947-4-1 and GB/T14048.4-2003 mechanical contactors and motor starters4IEC60947-5-1 and GB/T14048.5-2001 electrical equipments of electromechanical control circuit. It also has disconnecting and creepage protection function.

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