There are other devices able to break a circuit during a surge or short circuit each with its own limitations.
Magnetic circuit breaker.
Small circuit breakers typically have a manual control lever to switch off the load or reset a tripped breaker while larger units use solenoids to trip the mechanism and electric motors to restore.
This is done when the current passes through the solenoid magnetism develops in it due to changing magnetic flux and a magnetic field is created around the solenoid.
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Thermal magnetic circuit breaker definition.
The function of the solenoid or the trip unit is to generate a magnetic field.
So in case of a magnetic circuit breaker a solenoid or an electromagnet is attached to the trip unit.
These are circuit breakers which utilize two components to detect electrical faults.
In american homes today thermal magnetic circuit breakers are the most common type.
Circuit breakers may also use the higher current caused by the fault to separate the contacts such as thermal expansion or a magnetic field.
The first component is an electromagnet that is sensitive to large surges in electrical currents.
A magnetic circuit breaker is a safety device designed to cut an electrical current in the event of a power surge thus protecting electrical equipment and circuitry from damage.
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Explanation of magnetic circuit breaker.