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When the metal button switch is pressed, the two pairs of contacts act simultaneously, the normally closed contact opens, and the normally open contact closes. In order to indicate the function of each button and avoid misuse, the button caps are usually made in different colors to show the difference. The colors are red, green, black, yellow, blue, and white. The button switch can complete basic control such as start, stop, forward and reverse, speed change and interlock. The main parameters, type, mounting hole size, number of contacts and current capacity of the button switch are specified in the product copy. For example, red indicates a stop button, green indicates a start button, etc. Each button switch usually has two pairs of contacts. Each pair of contacts consists of a normally open contact and a normally closed contact. Topshahll specializes in the production and sales of button switches, waterproof water button switches, metal button switches and other products. Welcome to contact us for inquiries.


Metal push button switch


Common button categories and features:


Open type: suitable for embedded and fixed on the switch board,


On the panel of the control cabinet or console. The code name is K.


Protective type: With protective shell, it can prevent the internal button parts from being damaged by machinery or people touching the live parts.


Waterproof: With a sealed shell, it can prevent the intrusion of rainwater. Code-named S.


Anti-corrosion type: it can prevent the intrusion of chemical corrosive gas. Code-named F.


Explosion-proof type: Can be used in places containing explosive gas and dust without causing explosion, such as coal mines and other places Code-named B.


Knob type: Rotate the operating contact by hand, there are two positions for on and off, generally panel-mounted. The code name is X.


Key type: Use the key to insert and rotate to operate, which can prevent misoperation or for special person to operate. The code is Y.


Emergency: There is a big red mushroom button protruding from the outside


Safe waterproof system for waterproof push button switch


1. It is used to isolate the power supply and disconnect the high-voltage maintenance equipment from the live equipment so that there is an obvious visible disconnection point between them.


2. The waterproof metal switch cooperates with the circuit breaker to perform the trip operation according to the needs of the system operation mode to change the system operation wiring mode.


3. When operating the waterproof metal switch, it should be noted that when the line is powered on, the waterproof metal switch on the busbar side is first turned on, then the waterproof metal switch on the line side, and then the circuit breaker. When the line is powered off, the circuit breaker should be opened first, and then the waterproof metal switch should be opened. Do not pull and close high-pressure waterproof metal switches with load.


4. Used to connect or disconnect small current circuits. The waterproof metal switch can perform the following operations: it can pull and close the bypass current of the closed circuit switch; pull and close the ground wire of the transformer neutral point, but when the arc suppression coil is connected to the neutral point, only when the system is not faulty Operable; pull and close the voltage transformer and lightning arrester; pull and close the bus and the capacitor current of the device directly connected to the bus; pull and close the current of the capacitor with no more than 5 amps; the triple waterproof metal switch can pull and close the voltage Loads below 10 kV and below, current below 15 A, etc.


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