Surge/EFT compliance for Arduino

I have designed a control system using Arduino and mu customer came up with the requirement for EMC compliance. I have just looked at the severity levels and I have to comply for 1kV level of Surge and EFT. How do I begin. Googling gives lot of options but not to the point. I need to protect only power lines , ie.. +5V from the Transient voltages. I seek expert advice

you may thale this schematic, more or less just opy it: https://www.ta.co.at/download/datei/17871799-manual-can-ues2/

The link provided does not give the part numbers of the component used

Sure it doesn't :slight_smile: But you can get the parts from mouser, farnel ..., just use the search field.