contactor

/ˈkänˌtaktə(r), kənˈt-, känˈt-/ (ame, mw)

contactor — noun

1. an electrically controlled switch used to open and close a power circuit many ti

1.名詞C2
釋義

an electrically controlled switch used to open and close a power circuit many times during regular operation

例句

Cole replaced the worn contactor in the factory's main control panel.

replace a contactor in a control panel

When the contactor clicked, the water pump started moving again.

the contactor clicks before a motor starts

同義詞
  • relay

    similar in function, but a relay usually controls a smaller load or signal

  • switch

    a much broader everyday term that often means the part a person touches

  • starter

    broader electrical equipment that may include a contactor as one part

文法句型

replace a contactor

the contactor clicks

faulty contactor

main contactor

用法筆記

Usually refers to a component inside electrical equipment, not a small switch that a person touches directly. It is common in discussions of motors, pumps, lifts, heaters, and air-conditioning systems.

常見錯誤

❌The light switch on the wall is a contactor.
✅The wall switch controls a contactor inside the panel.
💡A contactor is the internal power-control part, not the hand-operated switch itself.