Maintained Push Buttons

A maintained push button is a button that stays in the pressed position when pressed and keeps its contact in the changed state until it is pressed again. It is used to control loads that will stay on for a long time, such as lighting, fans or pumps, giving on and off commands without building a sealing circuit. The category includes EMAS-brand green and red models with a 22 mm mounting diameter, plastic housing and 1NO contact, available in IP50 and IP65 protection ratings. Select the button by color, contact type, series and IP rating, making sure it has the same mounting diameter as the other buttons in the panel. A maintained button is not a substitute for a spring-return button that returns when released; because its contact stays closed when power is cut and restored, the load may restart on its own.

Products

How to choose Maintained Push Buttons

A maintained push button is a button that stays in the pressed position when pressed and keeps its contact in the changed state until it is pressed again. It is used to control loads that will stay on for a long time, such as lighting, fans or pumps, giving on and off commands without building a sealing circuit.

  • Separate sensing, motion control, logic processing and operator interface requirements.
  • Select signal type, supply voltage, communication protocol and I/O count for the machine network.
  • Verify housing size, sensing distance and PNP/NPN output polarity against the PLC input card.

Frequently asked questions

What is Maintained Push Buttons and where is it used?

A maintained push button is a button that stays in the pressed position when pressed and keeps its contact in the changed state until it is pressed again. It is used to control loads that will stay on for a long time, such as lighting, fans or pumps, giving on and off commands without building a sealing circuit.

What should I compare when choosing Maintained Push Buttons?

Select the button by color, contact type, series and IP rating, making sure it has the same mounting diameter as the other buttons in the panel.

Where can I find technical details for Maintained Push Buttons products?

A maintained button is not a substitute for a spring-return button that returns when released; because its contact stays closed when power is cut and restored, the load may restart on its own.

Push Buttons Selection Guide: Technical Criteria and Engineering Practice