mercury switch


Also found in: Dictionary, Thesaurus, Medical, Financial, Wikipedia.

mercury switch

[′mər·kyə·rē ‚swich]
(electricity)
A switch that is closed by making a large globule of mercury move up to the contacts and bridge them; the mercury is usually moved by tilting the entire switch.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

mercury-contact switch

A wall-mounted switch used in interior electric wiring; contains a sealed glass tube of mercury which provides a silent contact when the switch is turned on.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The costs associated with removing, storing and disposing of the mercury switches will be taken on by the vehicle manufacturers.
New Jersey enacts new Mercury Switch Removal law
The key part of that legislation is requiring producer responsibility from the automakers to help finance and recover the mercury switches that are out there in existing vehicles."
The mercury program: mercury's toxicity is prompting associations, environmental groups and communities across North America to address the recovery of this heavy metal from end-of-life automobiles. (Environmental Compliance)
Until November 1, simple depollution steps, including the removal of oil components, batteries and mercury switches, will satisfy legal requirements along with the customer selfcertifying it has been done.
Breakers saved from scrapheap
Unveiling the SSN DIN-rail mount for replacing low-amperage mercury switches. Also introducing the THV power controller and new MA900/901 series 1/4-DIN controller with up to eight channels.
Control & monitoring. (What to See at NPE 2003)
A few states have laws mandating that mercury switches be removed from cars before crushing them for landfill.
Mercury misdirection. (Waste Disposal)
He also points out that many state vehicles contain potentially hazardous mercury switches, and that a statewide effort is underway not only to stop buying cars with mercury in them, but to capture the toxic metal in the fleet now.
Buying green: harnessing the incredible procurement power of governments, hospitals, colleges and America's biggest corporations to protect the environment
The program's sponsors hope to replace 10,000 mercury switches. For no charge, the mercury switches will be replaced with a ball-bearing switch.
Switches using mercury can be replaced free
During the first few days of the WASO, numerous mercury switches began disappearing out of local condominiums.
Special event safety and security: protecting the world alpine Ski Championships
The collars had mercury switches that changed the signal from the collar if the deer was bedded or up and moving around.
Hot And Cold Tips For Success
Additionally, some of the older timers are said to contain mercury switches found to be a potential environmental hazard.
Tire press curing timer
Potential sources of elemental mercury in residential settings include mercury switches, mercury-containing devices (e.g., thermostats and thermometers), and mercury obtained from laboratories, dental offices, or other industrial sources.
Mercury exposure among residents of a building formerly used for industrial purposes - New Jersey, 1995
Staff who provide direct supervision carry two-way radios with built-in mercury switches that activate if the radio is placed in a horizontal position.
Youth center uses right blend of architecture and technology
Encyclopedia browser ?
Full browser ?