In our daily life, the switch is one of the essential hardware
accessories. At present, there are many kinds of switches, among which rotary
switch is a common one. It is widely used in electric fans, desk lamps and
other electrical products. Then how to choose the rotary switch, what brand is
the rotary switch, and the following text will introduce it to you.
How to choose rotary switch
1. Look at the shell material
At present, the rotary switch panels with excellent quality in the
market are mainly made of PC material. PC material has excellent impact
resistance and high temperature resistance and is not easy to change color.
Therefore, we'd better choose the rotary switch made of PC material when
purchasing.
RT31 Series
2. See contact material
At present, the materials of rotary switch contacts on the market are
mainly divided into silver nickel alloy, silver cadmium alloy and pure silver.
Among them, silver nickel alloy is the best, with excellent conductivity and
hardness, which is not easy to oxidize and rust. Silver cadmium alloy contacts
also have excellent performance in all aspects, but cadmium is a heavy metal
element, which is harmful to human health. At the same time, the fusion of
silver cadmium alloy is relatively poor, which is easy to form small particles
on the contact surface, and it is easy to produce electric arc when conducting
electricity.
RT36 Series
3. Look at the weight
When we buy rotary switches, we can also weigh the switches. Switches
with excellent quality usually use many copper and silver metals, which will
not bring a light feeling. In addition, we also need to test the switch. The
switch spring with excellent quality has excellent elasticity, and the switch
button will not stop at a certain position in the middle.
