Electronic Electrical Devices | Electronic Electrical Components
The purpose of a circuit breaker is to break the circuit and stop the current flow when the current
exceeds a predetermined value without causing damage to the circuit or the circuit breaker.
Circuit breakers are commonly used in place of fuses and sometimes eliminate the need for a
switch. A circuit breaker differs
from a fuse in that it "trips" to break the circuit and may be reset, while a
fuse melts and must be replaced.
Air circuit breakers (ACBs) are
breakers where the interruption of
the breaker contacts takes place in an
air environment. Oil circuit breakers
(OCBs) use oil to quench the arc
when the breaker contacts open.