Industrial Switches target high-tech operator controls.

Press Release Summary:

Occupying 34 mm behind panel, including contact block, Series 51 includes illuminated pushbuttons, indicators, selector switches, and key switches in choice of sizes, shapes, and material. Up to 4 NO and 4 NC contacts can be mounted per switch. Depending on selected switch element, Series 51 can accommodate operating voltages from 10 µA/100 µV to 250 V/5 A. Units are suitable for touchscreen interfaces, wireless remote controls, and other space-restricted applications.

Original Press Release:

Space Saving Switches for Cutting Edge Control Panels

Milford, CT – EAO Corporation of Milford, CT USA, a premier global supplier of Human Machine Interface (HMI) Systems and Components, has developed a new range of space saving industrial switches suitable for high-tech operator controls. The new Series 51 switch range is designed to occupy less space behind the panel – just 34mm including the contact block for a pushbutton.  This allows for stacking of more contacts in the same behind-panel space which allows for added space for additional system components. This is a great advantage in flatpanel touchscreen interfaces, wireless remote controls, handheld pendant controls, or any piece of equipment where behind-panel space is restricted.

The range of HMI Components comprises expertly-designed illuminated pushbuttons, indicators, selector switches and key switches in a choice of sizes, shapes and materials – either hard-wearing plastic or durable aluminum for challenging application environments. Many different lens and bezel color combinations are possible to create your custom look and feel. 

Up to four normally-open (NO) and four normally-closed (NC) contacts can be mounted per switch. Depending on the selected switch element, the Series 51 can accommodate a wide range of operating voltages from 10µA/100µV up to 250V/5A. EAO offers a choice of terminals including solder, solder/plug-in and PCB.  With front protection to IP65, a mechanical lifetime guarantee for more than one million cycles, and compliance to all important national and international standards, EAO’s Series 51 are suitable for applications within machinery, process and automation control, heavy-duty lifting and moving equipment, transportation, and medical devices.

About EAO

EAO Corporation is a technology leader in Human Machine Interface (HMI) Systems and Components. Founded more than 60 years ago in Olten, Switzerland, EAO is a global manufacturer of a full line of HMI Components, including switches and keypads, as well as complete HMI Systems. For more information, visit our web site at or contact EAO at 98 Washington Street, Milford, CT  06460; Telephone: 203-877-4577; Fax: 203-877-3694. Send E-mail inquiries to

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