oil switch

oil switch

[′ȯil ‚swich]
(electricity)
A switch whose contacts are immersed in oil in order to suppress the arc and prevent the contacts from being damaged.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

oil-immersed switch

A switch which is immersed in a special insulating fluid, usually oil.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
* If you're not getting fuel or the smoke generator Stops when you hit the fog oil switch, check the supply line inside the fuel can.
"I winched it onto the back of my truck immediately," he recalls, chucking because even then he suspected the tractor wasn't really "dead." Bob knew Wheel Horses came equipped with a low oil switch, which prevents the operator from turning the tractor on if the oil is low.