Metal push button switch
When the metal button switch is pressed, the two pairs of contacts move at the same time, the normally closed contact is disconnected and the normally open contact is closed. In order to indicate the role of each button and avoid misoperation, the button cap is usually made into different colors to show the difference, with red, green, black, yellow, blue, white and so on. Button switch can complete start, stop, positive and negative, speed change and interlock and other basic control.
The main parameters, type, mounting hole size, contact number and contact current capacity of the button switch are specified in the product copy. For example, red stands for rest button, green stands for start button, etc. Usually each pushbutton switch has two pairs of contacts. Each pair of contacts consists of one normally open contact and one normally closed contact. Yueqing Pingxing electronics specializing in the production and sales of button switch, waterproof button switch, metal button switch and other products welcome to inquire.
Common button types and features:
Open type: suitable for mounting and fixing on the switch board, control cabinet or console panel. Code-named K.
Protective type: with protective shell, can prevent the internal button parts from mechanical damage or human touch live part, code H.
Waterproof: with a sealed casing to prevent rain intrusion. Code name is S.
Anti-corrosion type: can prevent the invasion of chemical corrosive gases. The code name is F.
Explosion-proof type: can be used to contain explosive gas and dust places without causing the transmission of explosion, such as coal mines and other places. Code B.
Knob type: use the hand to rotate the operation contact, there are on and off two positions, generally for the panel installation type. Code name is X.
Key type: the key is inserted and rotated for operation to prevent misoperation or special operation. Code Y.
Emergency type: big red mushroom knob protruding out
