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circuit breaker

circuit breaker

8 3.9
A device that automatically stops electric current to prevent overloads
  • noun
  • /ˈsɜrkɪt ˈbreɪkər/
  • Specialized
translation icon : disyuntor
  • The technician explained how a circuit breaker prevents electrical fires by stopping current flow during an overload.
  • circuit breaker tripped
  • flip the circuit breaker
  • circuit breaker is blown

Now, all of these tools have a tendency to trip the circuit breaker in our basement, so I got cordless versions of all of those.

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Examples

  • Where's your circuit breaker?

  • Where's the circuit breaker?

  • Do you know where the circuit breaker is?

  • Where are the circuit breakers, Doctor?

  • Know where the circuit breaker is for the room you are working in.

    Blog text (25)
  • Just flip the red circuit breaker, the biggest one in the box.

    Fiction book (1993)
  • I need you to go to the circuit breaker and check switches six through twelve.

    Fiction book (2000)
  • You don't know where your circuit breaker is?

  • Wait in the foyer while I go look for the main circuit breaker.

  • The lights trip off as the circuit breaker is blown, leaving everything in semi-darkness.

    Fiction book (1996)

Synonyms

fuse
vscircuit breaker
  • Specialized
54 4.4

A safety wire that melts to stop electricity when current is too high

stops current by automatic switching rather than melting to break the circuit
breaker
vscircuit breaker
  • Specialized
48 4.3

A switch that stops electricity when too much flows in a circuit

includes protection against short circuits as well as overloads
interrupter
vscircuit breaker
  • Specialized
1 5.8

A device that stops an electric current to protect a circuit

is focused on safety interrupting specifically for overloads or short circuits
cutout
vscircuit breaker
  • Specialized
1 6.9

A device that stops electrical current when there is an overload

is defined for overloads and short circuits rather than focusing on switch form
safety fuse
vscircuit breaker
  • Specialized
1 4.1

A small device in an electrical circuit that stops the electric current when it becomes too strong

focuses on overloads and short circuits rather than just exceeding a safe level
electrical fuse
vscircuit breaker
  • Specialized
3.0

A small part with a thin wire that melts to stop dangerous electric current

uses automatic interruption instead of melting to protect against overloads

How Protective

circuit breaker
  • Specialized
8 3.9
fuse
  • Specialized
54 4.4
spike arrester
  • Specialized
7.2
spike suppressor
  • Specialized
6.3

Surface Forms

Morphology

circuit + breaker

The term borrows a concrete electrical device image: 'circuit' + 'breaker' literally describes a switch that interrupts current. Learners who know both words can plausibly infer a device (or mechanism) that interrupts a flow to prevent harm, but the technical software-specific behavior (detecting failures and temporarily blocking calls) is a metaphorical extension requiring domain knowledge, so the relation is only partially transparent.

Etymology

Circuit breaker comes from the picture of a loop of electricity: the circuit is broken by the breaker, so the current stops to keep things safe. That's why it means 'stop the flow of electricity' when there is too much power.