Explosion proof starter or shut off switch , ABS waterproof control box
Description:
There are many types of button switches, which can be divided into ordinary button type, mushroom head type, self-locking type, self-resetting type, rotary handle type, with indicator type, lighted symbol type and key type, etc., with single button and double. Buttons, multiple buttons and different combinations. Generally, it adopts a water-storage structure, which consists of a button cap, a return spring, a static contact, a moving contact and a casing. It is usually made into a composite type, and has a pair of normally closed contacts and normally open contacts, and some products can pass. The series connection of multiple components increases the number of contact pairs. There is also a self-contained button that automatically holds the closed position when pressed and can only be turned on after a power failure.
When the button is not pressed, the movable contact is connected to the upper static contact, and the pair of contacts is called a normally closed contact. At this time, the moving contact is disconnected from the lower static contact, and the pair of contacts are called normally open contacts: the button is pressed, the normally closed contact is opened, the normally open contact is closed; the release button is Restore the original working state under the action of the return spring
Classification of the button switch:
(1) Protective button: a button with a protective cover to prevent internal button parts from being mechanically damaged or touching the live part
(2) Break button: In the normal state, the switch contact is a button that is turned on.
(3) Move button: In the normal state, the switch contact is a kind of button that is open.
(4) Moving and closing button: In the normal state, the switch contact has both a button that is turned on and off.
(5) Illuminated button: The button is equipped with a signal light, in addition to the release of the operation command + also doubles as a signal indication
(6) Action click button: that is, the mouse clicks the button.
(7) Explosion-proof button: A button that can be used in places containing explosive gases and dust without causing explosion
(8) Anti-corrosion button: can prevent the intrusion of chemical corrosive gases
(9) Waterproof button: sealed enclosure to prevent rainwater intrusion
(10) Emergency button: There is a large red mushroom button protruding from the outside, which can be used as a button for cutting off the power supply in an emergency.
(11) Open button: A button that can be used to embed a panel attached to a switch board, control cabinet or console
(12) Chain button: a button with multiple contacts interlocking with each other
(13) Knob button: Rotate the operating contact by hand. There is a switch-on position, usually a panel-mounted button
(14) Key button: A button that is inserted and rotated to prevent misoperation or for a person to operate.
(15) Self-holding button: A button for the self-sustaining electromagnetic mechanism is installed in the button
(16) Combined button: A button with multiple button combinations
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