Skip to content
All Countries Free Shipping

Blogs

The Principle of Push Button Switch

by Huyu 05 Apr 2022 0 Comments

A hand switch / Pushbutton switch is exactly what the name implies: an electrical switch actuated by a person’s hand motion. These may take the form of toggle, pushbutton, rotary, pull-chain, etc.

A common form of industrial pushbutton switch looks something like this:

The threaded neck inserts through a hole cut into a metal or plastic panel, with a matching nut to hold it in place. Thus, the button faces the human operator(s) while the switch contacts reside on the other side of the panel.

When pressed, the downward motion of the actuator breaks the electrical bridge between the two NC contacts, forming a new bridge between the NO contacts:

The schematic diagram symbol for this type of switch looks much like the real thing, with the normally-closed contact set on top and the normally-open contact set below:

Connecting two of the terminals together makes this form of switch electrically identical to a Form C:

This switch contact arrangement is sometimes referred to as a form-C contact set, since it incorporates both a form-A contact (normally-open) as well as a form-B contact (normally-closed).

Most industrial hand switches are available in modular form, where sets of switch contact blocks may be “stacked” together to be actuated by the same pushbutton or rotary knob. This allows an almost unlimited number of switch contacts to be simultaneously actuated by a single actuating mechanism.

Different actuator types such as pushbuttons, rotary selectors, knobs, and key switches may also be interchanged with contact modules for maximum flexibility:

930 x 520px

SPRING SUMMER LOOKBOOK

Sample Block Quote

Praesent vestibulum congue tellus at fringilla. Curabitur vitae semper sem, eu convallis est. Cras felis nunc commodo eu convallis vitae interdum non nisl. Maecenas ac est sit amet augue pharetra convallis.

Sample Paragraph Text

Praesent vestibulum congue tellus at fringilla. Curabitur vitae semper sem, eu convallis est. Cras felis nunc commodo eu convallis vitae interdum non nisl. Maecenas ac est sit amet augue pharetra convallis nec danos dui. Cras suscipit quam et turpis eleifend vitae malesuada magna congue. Damus id ullamcorper neque. Sed vitae mi a mi pretium aliquet ac sed elitos. Pellentesque nulla eros accumsan quis justo at tincidunt lobortis deli denimes, suspendisse vestibulum lectus in lectus volutpate.
Prev Post
Next Post

Leave a comment

Please note, comments need to be approved before they are published.

Someone recently bought a
[time] minutes ago, from [location]

Thanks for subscribing!

This email has been registered!

Shop the look

Choose Options

Recently Viewed

Close
Edit Option
Close
Have Questions?
this is just a warning
Login Close
Close
Shopping Cart
0 items