Tumbler Switch

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Tumbler Switch


a small two-position or three-position switch operated by an arm-and-spring mechanism. Tumbler switches are mainly used for switching the control circuits (less frequently, the power-supply circuits) of electrical apparatus, instruments, and devices and electronic apparatus. They are usually mounted on control panels, switchboards, or consoles. The maximum permissible voltage for a tumbler switch is 380 volts, and the maximum current is 3 amperes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

tumbler switch

In electric wiring, a lever-actuated snap switch.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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Where there was once a variable resistor of which only the knob was visible on the column, you now have a standard lamp with a tumbler switch, complete with fingerprints.