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relais

relais

9.9
A small machine that turns electricity on or off when it gets a signal
  • noun
  • /rɪˈleɪ/
  • UK
translation icon : rele
  • The engineer installed a new relais to control the lighting system in the building.

Examples

  • Technicians often test each relais to ensure the equipment operates safely.

  • A faulty relais can cause the entire circuit to stop working properly.

  • The relais controlled the lights in the building.

  • A faulty relais can cause electrical failures.

  • The engineer installed a new relais to control the lighting system in the building.

  • Technicians often test each relais to ensure the equipment operates safely.

  • A faulty relais can cause the entire circuit to stop working properly.

Synonyms

switch
vsrelais
  • Specialized
233 2.5

A small device that turns electrical power on or off

is activated by a signal rather than by manual or direct control
electrical relay
vsrelais
  • Specialized
1 4.5

A device that uses a small current to switch another circuit on or off

is triggered by any signal and can be electromechanical or electronic
1 2.8

A device that connects and cuts the flow of electricity to turn a light or machine on and off

is activated by a signal rather than by manual or direct control
electric switch
vsrelais
2.7

A small device on a wall that turns electricity on and off

is activated by a signal rather than by manual or direct control

How Powerful

contactor
  • Specialized
1 5.5
relais
  • UK
9.9
switch
  • Specialized
233 2.5

Surface Forms

relais singular
relais plural

Etymology

The word relais used for an electrical switch borrows the idea of 'passing on' from the English relay and the old French stopping places; like a relay race, a relais 'hands on' a signal to open or close a circuit.