Drip-protected enclosure (or machine)
Alternative term: Drip-proof enclosure (or machine)
An enclosure (or machine) designed to prevent the ingress of liquids and solid particles falling on it vertically or nearly vertically.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
International Association of Marine Aids to Navigation and Lighthouse Authorities - AISM