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PUSHBUTTON

A push-button (also spelled pushbutton) or simply button is a simple switch mechanism to control some aspect of a machine or a process. Buttons are typically made out of hard material, usually plastic or metal. The surface is usually flat or shaped to accommodate the human finger or hand, so as to be easily depressed or pushed. Buttons are most often biased switches, although many un-biased buttons (due to their physical nature) still require a spring to return to their un-pushed state. Terms for the “pushing” of a button include pressing, depressing, mashing, slapping, hitting, and punching.

PRODUCT RANGE
  • Voltage Rating: 24/48, 110/120, 220/240, 480, 600 AC/DC 50/60 Hz
  • Orientation: Horizontal/Vertical
  • Standard: UL508, CCC
TYPES

SPST

SPST stands for “single pole single throw”. This is probably the most common type of push buttons which is also known as a simple on-off switch. SPST buttons can either stay in on position when pushedor return to the off position once they are released.

SPDT

As you might probably guess on your own, SPDT stands for “single pole double throw”. The most popular term for this type of push button is a three-way switch. Its most useful feature is that it can bein on and off position at the same time. These push buttons are usually used in pairs and the switch canturn on different devices in each of its positions. Such a button can be used to turn on a green light and a red light when it’s in two different positions. Some buttons can be used to turn off both lights in their third position.

DPST

The double pole single throw switch usually has 4 terminals. This push button is actually a pair of regularon-off switches that operate together. These switches can isolate both neutral and live connectionswhen used to switch electricity.

DPDT

This is the most complex switch of the ones mentioned so far. It usually has six terminals and can befound in both maintained and momentary contact versions. This push button can be used reversingswitch for a motor for example.

APPLICATIONS

Push Button specifically for commercial and industrial usage, the buttons can connect through mechanical linkage, which means that pushing one button can actually cause another button to release.

In many cases, the buttons will have specific coloration to help denote their actions. This ensures that the chance of someone pushing the button by mistake is lower. Red will usually indicate stopping, while green generally indicates starting a machine. Emergency stop buttons, which tend to be large push buttons, are generally red, and they typically have larger heads for easier use.

MATERIALS
  • Thermoplastic Polyester (Fiberglass Reinforced)
  • Transparent Amorphous Nylon
  • Mineral Filled Nylon
  • Thermoplastic Polyester
  • Nitrile (Synthetic Rubber)
  • Glass Filled Crystalline Nylon

Source : Wikipedia, Academia, Uk.rs-Online

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