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Industrial Push Button Switches: Types and Application

by Huyu 18 Apr 2023 0 Comments

Push buttons are just the power switches for an appliance or machine. In most cases, the switches are made of thermoplastic or metal and are placed where the user can reach them easily. Electrical circuits aim to ensure that current can flow freely and unimpeded between all of the connected devices and wires. Always-on circuits are less useful than those that power up just when needed.

Hidden in equipment or connected via a cord, push buttons activate various functions. They are accessible for regular people to see and utilize. Both temporary and permanent push button switches are commonly used.

Electronic and mechanical gadgets in the home or workplace often have these switches, including calculators, kitchen appliances, push-button telephones, magnetic locks, and many more.


Types of Push Button Switches


You can find push-to-talk switches in either a normally open (NO) or usually closed (NC) configuration (NC). When activated, typically closed switches (those in the "ON" position) break the circuit, whereas normally open switches (those in the "OFF" position) complete it. Push-button switches fall within this category, and their switching circuit can further describe their functioning.

Single-pole single-throw (SPST), single-pole double-throw (SPDT), double-pole single-throw (DPST), and double-pole double-throw (DPDT) are typical types of push buttons. 

The single-pole, single-throw (SPST) switch can only open or close one circuit because it only has two terminals. You could use it to control a motor's on/off status, for instance. A three-terminal SPDT can operate in two independent circuits.

As a result, it can be used to toggle the power to two individual LEDs or to wake up a piece of machinery. A DPST or DPDT switch configuration allows for the independent operation of two separate circuits simultaneously. For instance, one may have a high voltage while the other has a low voltage.

19mm silver push button 5 color

Normally open


A typical electrical switch is a normally open device. When a usually open switch isn't crushed, it remains in the off position. The internal electrical connections are to blame for this. The contacts of a typical switching device are open when the switch is disabled. It means the power has been turned off and the connection has been cut.

When the typically closed switch's contacts are not squeezed, the switch is activated because of the connection between the switch and the contacts. There are two types of typically open switches: momentary and latching.


Normally Closed


Without input from the user, a usually closed contact will remain in its closed position. The normally closed contact will remain closed unless a force, mechanical or electrical, is applied. The provided power causes the switch's actuating force to be generated, which opens the normally closed contact.


Single Pole, Single Throw


There is only one input and output on a single pole, single throw switch. An input is connected directly to an output of the same type. The ON/OFF functionality of the switch is important to its utility in controlling the circuit.

Switches in electrical circuits are said to be "ON" when closed and "OFF" when they are open. This switch is used in the 25KV DC power system for railroads and household light switches.


Single Pole, Double Throw Switch


This switch has the unique ability to operate two separate circuits from a single input. You can use a magnet or an electromagnetic coil to flip this switch on and off either automatically or manually. You may see a single pole or double throw switch at the ACS 550 or 800 VFD's output terminal relays. As such, the relay switch can have a single input and two separate outputs set up.


Uses for Push-Button Switches


Push button switches are widely used and may be found in many devices, from calculators and phones to toys and even cars. You could control the device's on/off status via a switch. A calculator is an example of a device that uses this kind of input to do a certain task.

The buttons' colors often denote what functions they perform. Red is typically associated with a stop function, while green is associated with a start function. Most emergency buttons are bright red and have extra-large heads for convenience. By doing so, accidental button presses are reduced.

push button

Additionally, push buttons can be used for:

  • Reset switches are typically tiny and can be toggled on and off with a dedicated instrument.
  • In an emergency, it is possible to halt the functioning of industrial machinery by flipping a special switch located on or near the machine.
  • For use in arcade games, these buttons are often round.

Buttons have other use as well, such as:

  • The water in the toilet flushes.
  • Aspects of Showers
  • Dimmer switches


Take away

It's important to be careful while selecting a button since badly made ones might cause malfunctions in the connected circuits and even fires. A poorly designed push-button control is not worth the risk to your life. In addition, you can all benefit from your expertise in this area. We're crossing our fingers that these stick in your brain.

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