31-121.0252, EAO Illuminated Push Button Switch for Use with Series 31

Illuminated Push Button Switch - EAO 31 Series

The EAO 31 series of illuminated push button switches are suitable for use in many Human Machine Interface (HMI) panel mounting applications including Process Control, Panel Building, Machinery and Instrumentation. The illuminated push button switches are available in a choice of round (18mm diameter), square (18x18mm) or rectangular (18x24mm) bezels with snap action or low level switching elements with momentary or maintained switching actions.
The snap action switching element is a self-cleaning, double-break, snap action system with solder terminals, while the low level switching element is designed for switching low power loads in electronic circuits ranging from 10μA at 100μV up to 100mA at 42Vac/dc, termination is via universal terminals that allow either direct soldering or PCB mounting.
Illumination for the EAO 31 series of push button switches is via a T1 midget groove filament lamp or single chip LED with a voltage of between 6 and 48V. For supply voltages above 48V, it is necessary to use an external series resistor.
All EAO 31 series of illuminated push button switches require a 16mm panel cut out and are suitable for panels with a thickness of between 1.5 and 6mm. They have a long life, short rebound time and a stable contact resistance.

Various configurations available including low level or snap action elements, momentary or maintained switching actions and normally closed or normally open contacts
Raised button profile
Self-extinguishing switch and actuator housing material
Class II compliant
Electric strength 2500Vac 50Hz for 1 minute between all terminals and earth, as per IEC 60512-2-11

Note

To make a complete illuminated switch you will need the switch, a lens and a filament lamp or LED.
For the EAO 31 series of indicators see stock number 248-5368 typically.
For the EAO 31 series of lenses see stock numbers 749-2611 or 248-5425 or 248-5374 typically.
For the EAO 31 series tool kit see stock number 248-5481.
For a suitable filament lamp see stock number 655-9211 typically.
For a suitable white single chip LED see stock number 225-997 typically.

Standards

EN 61058

EAO Illuminated Push Button Switch, Momentary Switch Operation, 250V AC Switching Voltage - 31 Series - 31-121.0252

Shine a light on your automated systems with this illuminated push button switch from EAO. Thanks to its momentary action, it only works while pressed to give you precise machine control at your fingertips. Its gold-plated silver contacts are highly conductive and resistant to corrosion to form efficient electrical connections. The product's maximum switching voltage of 250V AC means it's suitable for use in low-power applications. As it has space for an LED, the switch illuminates to stand out on crowded control panels.

• Contacts are self-cleaning, helping to stop clogging from dirt for low-maintenance switching
• IP40 rating indicates protection against solid objects and wires larger than 1mm in size
• Compact cutout diameter of 16mm means it's easy to mount on busy panels
• Solder terminals help secure electrical connections, limiting disruption from vibrations

Applications

• Automated doors
• Office buildings
• Agricultural equipment

Do I need any other components to use this push button switch?

Yes, you'll need to supply an LED and a lens cover (248-5396) to finish building this component before use.

Series 31 Switches and Indicators Data Sheet

EAO - Series 31 - HMI Human Machine Interface Data Sheet

DataSheet