Pushbutton Switch Working Principle Introduction

March 02, 2022

Pushbutton Switch Working Principle Introduction

The 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.

The push button switch can perform basic control such as start, stop, forward and reverse, shifting, and interlocking. Usually each push button switch has two pairs of contacts. Each pair of contacts consists of a normally open contact and a normally closed contact. When the button 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 misoperation, the button caps are usually made into different colors to distinguish them, and the colors thereof 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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