There are several types of pushbutton switches:
Pushbutton switches can be classified according to the way they are protected and how they are operated. It can be divided into open type and protected type, as well as waterproof type and anti-corrosion type, etc. And explosion-proof, knob type, key type, emergency type, are also its classification.
The open type is embedded on the top of the switch plate for fixation. It is used in consoles as well as on the panels of control cabinets. The effect of the maintenance type is to maintain the shell, which can prevent the parts inside it from being damaged or having an electric shock. The waterproof version has a sealed shell that prevents rainwater from entering the room.
The anti-corrosion type is to prevent the corrosive gas of the chemical industry from entering its interior. Explosion-proof means that there are some explosive gases, such as coal mines, etc., which cannot be detonated. The special feature of the knob type is that it can be rotated by hand, and it has two different positions: on and off.
The emergency type is that when it is used, there is a red button that protrudes outward, and this is used to cut off the power when it is urgent. The key type means that it can use the key to insert it and then perform a certain operation. This prevents it from being manipulated by others or by someone who only needs the key.
And it also has its own buttons, which represent the use in power plants and substations, and the operators of them pass through certain signals to each other, and then convey the corresponding instructions before operating. This self-holding button has an electromagnetic structure inside.
The lighted button is equipped with a signal light, which can be used as a signal to indicate after the corresponding operation is released, and it is generally used in the console and control cabinet. The combination type means that its buttons are composed of several buttons, and the chain type means that its contacts can be interlocked with each other.
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