contactor

[kon-tak-ter, kuhn-tak-ter]

con·tac·tor

[kon-tak-ter, kuhn-tak-ter]
noun Electricity.
a mechanically operated switch for continuously establishing and interrupting an electric power circuit.

Origin:
1905–10; contact + -or2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Contactor is always a great word to know.
So is lollapalooza. Does it mean:
a gadget; dingus; thingumbob.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.
Collins
World English Dictionary
contactor (kɒnˈtæktə)
 
n
a type of switch for repeatedly opening and closing an electric circuit. Its operation can be mechanical, electromagnetic, or pneumatic

Collins English Dictionary - Complete & Unabridged 10th Edition
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