The importance of types of electrical switches
Although there is a plethora of electrical
switches available, but the most uncommon among them are changeover switches
and push-button switch. They aren’t uncommon because they are of less usage,
they are uncommon because we are unaware of the importance these devices hold
in the smooth functioning of electrical current.
A push button switch is made of a simple electric switch mechanism which controls
portions of a machine or a process. The buttons are typically made of hard
material such as plastic or metal. Its surface is usually shaped to accommodate
the human finger or hand, so that the electronic switch can be pushed or
de-pressed with ease. These switches are also known as a biased switch or a
momentary switch where the user pushes for turning it on and push off to turn
it down. This type of mechanism is also known as a push-to-make or
push-to-break mechanism. The ones with the push-to-make mechanism are a type of
push-button switch that operates by the switch making contact with the
electronic system when the button is pressed and breaks the electricity flow
when released. For example, a keyboard button. On the other hand, a
push-to-break electronic switch breaks contact when the button is pressed and
makes contact when it is released.
Image Source: amazon
A changeover switch is a contrast to push-over buttons. They are designed to transfer
a domestic or industrial electricity from the commercial power grid to a local
generator in times of outage. They are also known as ‘transfer switches’ as
they connect directly to the generator, commercial power supply or line and the
domestic line. Thus, when there is a power outage, the homeowner or business
owner can switch over to the generator via a changeover switch. Although changeover switches too come in a variety, but mostly they are subdivided into
two categories: automatic or manual. An automatic changeover switch automatically switches over during an outage,
without the need for manual switching. However, the manual model requires the
homeowner to flip the switch to redirect the power drawn from the commercial
grid to the generator.
image source: amazon
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