En 610101 Wikipedia ((better)) -

I believe you may be referring to , a series of safety standards for electrical equipment used for measurement, control, and laboratory use. The number "610101" does not exist in standard indexing; it is likely a typo or misreading of EN 61010-1 (the dash and the "-1" are essential).

The page is currently at: https://en.wikipedia.org/wiki/IEC_61010 en 610101 wikipedia