First, if you haven't already, consult the manufacturer. Maybe the contact material is not suitable for the voltage or the current in your application. Microswitches now rarely fail due to contamination.

Best wishes
John Woodgate OOO-Own Opinions Only
J M Woodgate and Associates www.woodjohn.uk
Rayleigh, Essex UK

On 2019-07-08 14:06, Amund Westin wrote:

A micro switch occasionally fails because it does not make contact during activation, and this is probably due to the contact surfaces being damaged or dust / debris on them.

Any suggestions on labs that may have this competence to do some work and analyze on such an issue?

Thanks!

Best regards

Amund

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