How to identify the quality of switch socket from inside to outside
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1, the appearance is divided into the outer frame, the inner frame, functional parts, good switch inside and outside the frame are PC material, PC material name polycarbonate, commonly known as bulletproof rubber, with flame retardant, anti-distortion, impact resistance, Difficult to dye, smooth appearance of the characteristics of a good switch outside the border can be bent 90 degrees, so you have to look at him as long as the outer frame is removed, hand-held diagonally to see if he will not be brittle, but you It's best to ask the clerk first. If he says it's not a PC, you must not buy it. If he says yes, you'll hold it in the opposite corner. If he doesn't let it go, you don't want to buy it. You have to ask if he is a fullbody PC. Of course, there are only some outside borders, and everything else is not. If he says no, you don't want to buy it. (Generally speaking, if you look at the switch, the highlighted part is the function part. If it is white, Chengdu is PC's, if it is black, 80% is not PC, because the PC material is white, of course, does not rule out it added black yeast, I know NVC's EP1 series is added black yeast, but it It is also PC material, but most of them can be resolved.) Whether he is flame-retardant or not, if you take a lighter and click it, it will surely ignite. Because the PC material is also a kind of plastic, but after leaving the fire source, the international standard is extinguished for 30 seconds and will not continue to burn. If the switch is not good, the clerk will definitely not Let you point, then you do not buy it.
2, then the inside of the function to open to see, I probably talk about it, do not understand it does not matter, open the feature, there is a thing like a seesaw, we call him rocker, the general good switch are The non-sliding rocker, the bad one is the sliding rocker, the rocker has a silvery white contact, and the switch is connected to the off current by him. The good switch contacts are silver alloy and silver nickel. Alloy, some silver-chromium alloy, no matter what the alloy, the purpose is to enhance the hardness of silver, increase its melting point to prevent the current is too large when melting silver, you can ask the clerk what the contact is, if he said it is sterling silver You don't want to buy it, and the rocker is a current carrying part. The material used to carry the current is tin-phosphor bronze. You can also ask the clerk if he wants to say brass, do not buy it. This part Because it is the structure inside, you can't see it when you buy it, so I'll probably say something about it. You can do it by asking the clerk.
3, no-name switch above the fluorescent strips are generally phosphor, phosphor is harmful to the human body, a good brand of resin materials are used, general phosphor fluorescent strips are very green, if it is resin, slightly Dark or gray, this appearance can be judged simply, or you can ask the clerk. He doesn't know if you don't know, and don't buy it.
4, look at its wiring, and now the best wiring is Simon's 60 series and TCL's 777 series, are using the card wiring, is the stripping out without screws, directly into the switch behind the wiring hole It's OK, everybody may think it's nothing. It has nothing to do with the user. It's just an electrician. But the wiring method can test the power safety of the switch. Don't ignore it, but these two individuals are not recommended because it is too expensive. The price is not high, it is recommended that you use the ordinary two-hole pressure plate structure on it, this can be seen from the appearance, you turn the switch over, look at the back to highlight that part, is the function, he has a few holes behind you Looking down from the hole, if you see a screw and a small board, there are two holes on the side. There are several millimeters to a few millimeters of the label next to the hole to prove this structure, if there is only one screw There is not only one hole next to the board team. There is only one and then do not buy it. As far as I know, basically all the miscellaneous and good brands of engineering products are such wiring. Do screw press lines, including "France Lang can" products are like this.
5, the socket hole from the outside if there is a black thing can not see the inside of the copper cover, then prove that there is a protective door structure, you can take a card or hard thing to single hole smashed, you can not enter to prove that there is self-locking The device is a good outlet. If you do not have a protective door, do not buy it.
6, pay attention to the load current of the switch is generally 10 amps but 16 amps better.
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