Wherever safety, reliability and compliance with international standards are of utmost importance, high-quality HMIs are highly valued. For many years, EAO has stood for precisely these values with its Series 04 switching elements – whether in railway, industrial machinery or electrical control systems and automation equipment. EAO is now launching a revised version of the renowned and long-lasting Series 04 switching element, which combines advanced materials with innovative manufacturing processes.

The revised switching element has a new design – in addition to a new housing colour, the previously transparent side walls have been replaced by black side panels made of high-quality V0 plastic. In general, the proportion of V0 materials has been increased, further improving safety in terms of smoke and fire resistant (in accordance with EN 45545). In addition, care has been taken to ensure that the new materials used meet the latest environmental, social and corporate governance (ESG) criteria.
Typical applications:
- Railway
- Industrial machinery
- Electrical control systems
- Automation systems
New, modern design and a long lasting, ultrasonically welded housing, but the same proven switching mechanism: EAO’s characteristic click sound and tactile haptics remain unchanged in
the new version.

Advantages:
- Maximum safety thanks to high-quality materials and compliance with globally relevant
safety standards - Sustainable components with a long lifetime, responsible manufacturing and backward
compatibility with earlier product versions - Flexible installation options with five different connection types (screw terminal, screw for
ring cable lug, single and double plug connection, Push-in Terminal (PIT)) - Various contact materials and contact configurations enable a wide range of applications,
e.g. slow-make switching elements with positive opening action for emergency stop
switches - Snap-action switching elements with self-cleaning contacts and unique tactile feedback.

With this new version of the Series 04 switching element, we not only meet the current requirements in a wide range of but also enable our customers to be well equipped for future requirements – for greater safety, reliability and sustainability in vehicles or machines.
This article was originally published by EAO Group