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Push Button Switches Have Two Pairs of Contacts

2018-11-21

Push Button Switches Have Two Pairs of Contacts


The Pushbutton Switches can perform basic control such as start, stop, forward and reverse, shifting, and interlocking. Usually each On Off Push Button Switches has two pairs of contacts. Each pair of contacts of Momentary Push Button Switches consists of a normally open contact and a normally closed contact. When the button is pressed, the two pairs of contacts act simultaneously, the two pairs of normally closed contacts are first disconnected, and then the two pairs are normally open and closed.

There are many types of Waterproof Push Button Switch, which can be divided into ordinary button type, mushroom head type, self-locking type, self-resetting type, rotary handle type, with indicator light type, illuminated symbol type and key type, etc. Buttons, three buttons and different combinations are generally made up of modular structures, consisting of button caps, return springs, bridge contacts and housings. They are usually made into a composite type with a pair of normally closed contacts and normally open contacts. Some products can increase the number of contact pairs by connecting multiple components in series. There is also a self-sustaining button that automatically maintains the closed position when pressed, Dongguan touch switch, can be turned on after power off.

Key Switches Illuminated Push Button Switch is a main electric appliance with a simple structure and a wide application. In the electrical automatic control circuit, it is used to manually send out control signals to control contactors, relays, electromagnetic starters, and the like.

Also: Tact Switches, Toggle Switches, ball switch, vibration switch, blade switch, dial switch, etc.

In order to indicate the function of each button and avoid misoperation, the button caps are usually made into different colors to distinguish them, and the colors are red, green, black, yellow, blue, white, and the like. For example, red indicates a stop button, green indicates a start button, and the like. The main parameters, type, mounting hole size, number of contacts and current capacity of the push button switch are described in detail in the product manual

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