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Pushbutton Switches

Push Button Switches are manually operated switches that are available in many different types: Switches with round or square bodies for mounting in round or square holes, lighted and non-lighted Switches, Indicators, Selector Switches, and more.

Overview Features
Principles Classifications
Engineering Data Further Information

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Primary Contents

Terms for Configuration and Structure

A Pushbutton Switch is a switch designed so that its contacts are opened and closed by depressing and releasing a pushbutton on the Switch in the direction of its axis. Pushbutton Switches come in two categories: lighted and non-lighted. The structure of a typical Lighted Pushbutton Switch is shown below. Broadly speaking, Lighted Pushbutton Switches are made up of the 5 sections shown below.
Non-lighted Pushbutton Switches are made up of 4 sections, the 5 sections shown below less the light source.

Terms for Operating Action

OperationExplanation
Momentary operationThe pushbutton returns to its original position after it is released.
Alternate operationThe first time the pushbutton is pressed, an internal lock mechanism holds it in the same position. The next time
it is pressed, the lock is released and the pushbutton returns to its original position.
Push-pull operationWhen the pushbutton is pressed, an internal lock mechanism holds it in the same position. The pushbutton is
returned to its original position when the pushbutton is pulled to release the lock.
Push-lock,
turn-reset operation
When the pushbutton is pressed, an internal lock mechanism holds it in the same position. The pushbutton is
returned to its original position when the pushbutton is twisted to release the lock.