What are the classifications of button switches
1. Normally closed button 2. Normally open button 3. Compound button 2. Button switches can be classified according to operation mode and protection mode. Common button types and characteristics: 1. Waterproof mode: sealed shell to prevent rainwater intrusion. Code 2, S anti-corrosion form: can prevent the intrusion of chemical corrosive gases. The code is F. 3. Explosion-proof form: it can be used in places containing explosive gas and dust without causing explosion, such as coal mines and other places. The code name is B. . 4. Spiral type: manually align the rotation operation, with two positions on and off, generally panel-mounted. The code name is X. 5. Key type: use the key to insert and rotate to operate, which can prevent misoperation or provide for special personnel. 6. Opening method: suitable for embedded installation and fixed on the switch board, control cabinet or console panel. The code name is K. 7. Protection mode: With protective casing, which can prevent the internal button parts from being affected by the machine. 8. Emergency mode: There is a red mushroom button head protruding outside to cut off the power supply in an emergency. The code name is J or M. 9. Self-sustaining button: The electromagnetic mechanism for self-sustaining short-circuit inside the button is mainly used in power plants, substations or test equipment. Operators exchange signals and issue instructions, etc., generally panel operation. The code name is Z. 10. Button with light: insert a signal light into the button, in addition to issuing operation commands, it also serves as a signal indicator, and is mostly used on the panel of the control cabinet and console. The code name is D. 11. Combination: multiple button combination. The code name is E. 12. Interlocking type: multiple interlocking. The code name is C.
