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a box of electrical fuses or breakers, usually arranged in a single row
A consumer unit fitted with just fuses is often referred to as a "fuse box".
a household or other group considered to be an economic unit; an entity that makes spending decisions
Average annual expenditures per consumer unit, which is similar to a household, rose 2.6 percent in 2007 following an increase of 4.3 percent in 2006.
a department within a corporation or government agency concerned with consumer practices and affairs
He was hired to run the computer maker's new consumer unit.