contactorn.

/kənˈtaktə/

Etymology: agent-noun in Latin form, < Latin contingĕre to contact v.

A device for making and breaking an electrical circuit. Also attributive.

ΘΚΠ

the world > matter > physics > electromagnetic radiation > electricity > circuit > circuit-breaker > [noun]

contact-breaker1838

cutout1874

safety fuse1882

break-circuita1884

fuse1884

contactor1910

oil circuit-breaker1916

tapping key1916

1910 Hawkins' Electr. Dict. 88/1 Contactors, in the multiple-unit system of electric railway control, the devices which serve to operate the various resistances, to make and break the main circuit between trolley and motors, and to change from series to parallel connection. They consist of movable arms tipped with copper for making contact with a corresponding fixed copper tip when actuated by current by the master controller.

1930 Engineering 31 Jan. 129/2 A push-button operated starter of the contactor type.

1937 Times 13 Apr. p. xvi/3 The first units to be made..with the contactor panel and resistances mounted at the rear of the chassis.

This entry has not yet been fully updated (first published 1972; most recently modified version published online September 2018).

单词	contactor
释义	contactorn. /kənˈtaktə/ Etymology: agent-noun in Latin form, < Latin contingĕre to contact v. A device for making and breaking an electrical circuit. Also attributive. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > circuit > circuit-breaker > [noun] contact-breaker1838 cutout1874 safety fuse1882 break-circuita1884 fuse1884 contactor1910 oil circuit-breaker1916 tapping key1916 1910 Hawkins' Electr. Dict. 88/1 Contactors, in the multiple-unit system of electric railway control, the devices which serve to operate the various resistances, to make and break the main circuit between trolley and motors, and to change from series to parallel connection. They consist of movable arms tipped with copper for making contact with a corresponding fixed copper tip when actuated by current by the master controller. 1930 Engineering 31 Jan. 129/2 A push-button operated starter of the contactor type. 1937 Times 13 Apr. p. xvi/3 The first units to be made..with the contactor panel and resistances mounted at the rear of the chassis. This entry has not yet been fully updated (first published 1972; most recently modified version published online September 2018). < n.1910
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