| slovo | definícia |
contact breaker
(gcide) | circuit breaker \cir"cuit break"er\, n. (Elec.)
A device contained within an electrical circuit designed to
interrupt the circuit when the current exceeds a preset
value; it is sometimes called a contact breaker. Its
function is to prevent fire or damage to the circuit or the
devices on the circuit which could be caused by excess
current, such as that caused by a short-circuit. It differs
from a fuse in not having a conducting element which melts
(see 2nd fuse, n.). Circuit breakers are designed to be
easily reset, i. e. to reclose the circuit after it has been
opened by the circuit breaker; this is usually accomplished
by simply moving a switch back and forth. They are commonly
used in buildings to protect individual electrical lines, and
are often contained in groups within a box called a circuit
breaker panel, which divides the current from a main
electrical line into multiple circuits each protected by a
separate circuit breaker. Less commonly they may be found on
individual devices.
[PJC] |
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