Also found in: Acronyms, Encyclopedia, Wikipedia.


 (kŏn′tăk′tər, kən-tăk′-)
An electrical relay used to control the flow of power in a circuit.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Electronics) a type of switch for repeatedly opening and closing an electric circuit. Its operation can be mechanical, electromagnetic, or pneumatic
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈkɒn tæk tər, kənˈtæk tər)

a switch for continuously establishing and interrupting an electric power circuit.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
KILOVAC contactors are highly specialized for use in critical applications with high current systems.
Cohu Inc (NASDAQ:COHU) unveiled on Tuesday the new cDragon contactor for testing a range of RF devices used in mobile and IoT (Internet of Things) applications.
All the models of the Solicon DRC3 Series combine the benefits and advantages of a solid state contactor with the functionality and simplicity of use of an electromechanical contactor thanks to the proprietary thermal management technology (Patented) and complete electrical insulation (no grounding required); the embedded auxiliary contacts, normally open and/or normally closed are intended to be used at 18-280Vac.
Taking into account the fact that the efficiency of the contactor decreases considerably as water diffuses into the pores of the membrane, the previous researches had mainly focused on hydrophobic membranes.
With the premium system, maintenance is easier through initiation and control of the bypass power contactor via door-mounted controls.
This strategic expansion will increase the production capacity of hollow fiber membrane array and membrane contactors to keep up with growing markets.
(Watlow previously did not supply the current transformer or mechanical contactor.) These six components (not to mention the heater and sensor) had to be wired together and frequently required long runs of multiple wires from the control cabinet to the processing machine.
The YieldPro contactor is very short electrically, which expands its use to 18 GHz and dramatically reduces parasitic inductance and capacitance that degrade measurement performance.
The proposal suggests use of flocculation, settling, slow sand filtration, and limestone contactors. Although the processes of flocculation, settling, and slow sand filtration are well known, there appears to be little practical engineering information available on the design of limestone contactors.
The contactor is a stamped spring pin with 31 gram actuation force per ball and cycle life of 125,000 insertions.