I have two new isolators in enclosures bought from a nationwide wholesaler. The isolators are not marked as to manufacturer or for nominal current. Apart from the statement on the cardboard box, their are no other markings. The installing contractor tells me that the only difference between the 32A and the 63A is the colour of the plastic on the spindle. Does anyone know if this is an acceptable means for a manufacturer to identify the nominal current rating of their product?
