The method for jud that quality of the leakage protection switch is as follows:
1. Look at the appearance, a refined appearance is the first impression, such as rough or not, the gap is even and uneven, and then the seller can burn other waste products with a lighter to see if it is flame-resistant. Then see if the label has national compulsory 3c certification. This can be found in China National Quality Center whether the enterprise has the specific qualification of this product.
2. Look at the internal structure, whether the internal copper coils are arranged neatly and tightly, whether the copper coils are fully enclosed, whether there is virtual welding on the solder joints of the circuit board, and so on.
3. Looking at the enterprise history, a company has been designing and manufacturing in this field for more than ten years, and its reputation and R&D experience will definitely be better. If it is a newly established enterprise, you need to pay more attention. As the saying goes, there are specialties in the industry, and professional people do professional things.
The leakage protector is used as the main power supply protection switch or branch protection switch in household power supply. When residential lines or household appliances are short-circuited or overloaded, it can automatically trip and cut off the power supply, thus effectively protecting these devices from damage or preventing accidents from expanding; Usually, the bipolar (2P) circuit breaker is used as the main power supply protection, and the unipolar (1P) is used as the branch protection. If the rated current of the circuit breaker is too small, the circuit breaker will easily trip frequently, resulting in unnecessary power failure.
If the choice is too large, the expected protection effect will not be achieved. Therefore, it is very important to correctly select the rated capacity current of home improvement circuit breakers.