It is understood that China's wire and cable industry, the cost of raw materials accounted for more than 80% of the total cost, the main cost of its expenditure on copper and aluminum in the two major metal materials. In general, for every 5% rise in raw material prices, the gross profit of the product is reduced by 4%.
In fact, wire and cable falsification is a chain reaction brought about by the industry's "low prices." In the low-price market competition environment, if the enterprise produces according to the national standard and strictly implements the technology, it will inevitably lose a lot. In addition, corporate profits have been squeezed, the average profit rate of the industry has been declining, and it is difficult for enterprises to ensure reasonable profits. Some unscrupulous enterprises have taken the risk and eventually gained profits through shabby means such as "stealing work cuts," "reducing cable cross-sections," and "shrinking inferiorly," and the quality of wire and cable products is difficult to guarantee. More than half of the fires that occur in the country each year are electrical fires, and more than 50% of them are caused by short-circuits in wires and cables. Poor wire and cable into the market and major engineering projects, can easily lead to fire accidents, resulting in economic losses, but also easily lead to adverse social impact. Although price is not the sole criterion for measuring product quality, price must be an important manifestation of product quality. If "price is not worth it," then what about quality?
RCCB named Residual Current Circuit Breaker. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, Residual current Circuit Breaker/RCCB(without over-current protection) will cut off the power rapidly to protect human safety and prevent the accident due to the current leakage. The rccb switch which made from Korlen electric can be used as infrequent changeover of the line in normal situation.
Korlen electric ---- the rccb switch manufacturer,produces types of Residual Current Circuit Breaker. It is applicable to industrial site, commercial site, tall building and civil house.
Residual Current Circuit Breaker
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Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.korlenelectric.com