The button can be classified according to the operation mode, protection mode, types and features of the common button:
Open type: suitable for embedded and fixed in the switch board, control cabinet or console panel. Codenamed K.
Type: protection with protective shell, can prevent the internal button parts of mechanical damage or touch live parts, codenamed H.
Waterproof type: with sealed shell, can prevent water intrusion. Codenamed S.
Antiseptic: can prevent the intrusion of chemical corrosive gas. Codenamed F.
Explosion proof type: can be used for containing explosive gas and dust in the place without causing detonation, such as coal mines and other places. Codenamed B.
Knob type: the rotation of the operating point of the hand, there are two positions on the broken, the general installation of the panel. Code named X.
Key: insert the rotation with the key to operate, can prevent misuse or for someone to operate. Code named Y.
Emergency type: red mushroom with a button head protruding from the outside, to cut off the power supply in case of emergency. Code named J or M.
Self-sustaining button: the button is provided with a self-sustaining electromagnetic mechanism. It is mainly used for power plant and substation or test equipment, operation personnel exchange signal and issued a directive, into the operator panel. Code named Z.
Ribbon lamp button: the button is provided with a signal lamp, in addition to publish operation command, doubles as a signal instructions, used for control cabinet, console panel. Codenamed D.
Combination type: multiple button combination. Codenamed E.
Interlock type: multiple contact interlock with each other. Codenamed C.
Classification by purpose and structure:
1, open button
2, a normally closed button
3, composite button