The WAP and Nilfisk-ALTO switch possibly for the WAP and ALTO SQ450 and the WAP and ALTO SQ550 and the Nilfisk-ALTO WAP SQ650 Wet and Dry industrial vacuum cleaner series industrial wet and dry vacuum cleaner 16 Ampere rotary cam switch.
It has at least 2 previous part numbers 302000443 and 107402643
It's the two position, four pole switch at 10.00 o'clock, and in the centre, but with a closed cam mechanism and four upward pointing spade terminals.
SAFETY WARNING! All electrical parts should ONLY be fitted by an electrically COMPETENT person.
At the moment, standard postage within Australia is capped at a maximum of $20! Maximise the saving on postage and buy some of the related parts below, such as the filters, or dustbags and a new floor tool, or other accessory.