It takes about three months from the beginning of design to the end of decoration of a home. It takes a lot of energy, and it is easy to make yourself dizzy. When the home is almost finished, when it needs to install a switch, I thought it was a simple choice, not just a switch. Just look at the copper inside, and you will know if it looks good. Who knows if you want to sell it Delixi switch At the sight of our shop, I was stunned. There are so many kinds of switches. If I don't understand them, I really don't know a small switch. There is so much knowledge in it. It really answers the saying "Sparrows are all dirty".
Tips for selecting switches
1、 Panel: (three types)
1. ABS: low-grade engineering plastics, easy to change color and low strength
2. PC material: strong impact resistance, strong heat resistance and high transparency
3. Electric jade powder: incombustible, never discolored, never worn, strong thermochemical
2、 Switch current carrying parts (copper) (three types)
1. Brass: hard, slightly weak elasticity, medium conductivity, bright yellow
2. Tin phosphorus bronze: hard, good elasticity, better conductivity than brass, red yellow
3. Red copper: slightly soft, good elasticity, high conductivity, purplish red
3、 Switch contacts (three types)
1. Copper: the most common and lowest grade, easy to oxidize, higher resistance than silver, and short service life
2. Pure silver: low resistance, soft texture, low melting point, easy to oxidize, easy to generate arc, burn wires or switch elements, resulting in poor power on
3. Silver alloy: low resistance, wear-resistant texture, high melting point, oxidation resistance, and superior comprehensive performance than pure silver
4、 Switch nozzle (two types)
1. Self lubricating type: nylon, hard material, wear-resistant, self lubricating, effectively reducing friction
2. Common reinforced nylon: with a long time, there is a phenomenon of unsmooth band. The increase of friction force causes the silver spot to melt off and the carrying capacity to drop
5、 Base (three types)
1. Imported reinforced nylon: good insulation, strong rigidity, impact resistance, corrosion resistance, no deformation under high temperature, to ensure that the internal components will never fall off
2. Recycled PC material: weak impact resistance, weak heat resistance and easy deformation
3. Common synthetic plastics: easy to be aged, inflammable and deformed
Single link: one button
Duplex: two buttons
Triple: three buttons
Single control: it has only one contact (normally open contact or normally closed contact)
Dual control: it has two contacts (normally open contact and normally closed contact)
Dual single control: there are two single control buttons on one panel, and these two buttons are used to control the switch of lamps in one direction, that is, the switch of lamps can only be controlled in a fixed place. Unlike the two-way control switch used in the stairwell, it can be turned on from the bottom to the top. It is generally used when there are two groups of light sources in a room
Single connection and single control: one button controls one group of light source
Single connection and double control: two buttons with a certain distance control a group of light sources at the same time, such as the control of corridor lights with stairs on both sides
Link: Several switch buttons on the same switch panel
Control: the control mode of switch button is generally divided into "single control" and "double control"
The last point is that the sound of the switch is also the key. A clearer switch proves that the copper inside is very good. On the contrary, the copper inside is not very good, and it will fail if there are more switches.
