Low-voltage switchgear and controlgear - Part 5: Control circuit devices and switching elements - Se...
Applies to separable contacts used in the utilisation area
considered such as switching element for control circuits. Two
rated voltages are taken into consideration: above (and
including) 10 V (typically 24 V) where contacts are used for
switching loads with possible electrical erosion, such as
programmable controller inputs, and below 10 V (typically 5 V)
with neglible erosion, such as…