Thermal Magnetic Circuit Breaker Schematic

Thermal magnetic circuit breakers contain two different switching mechanisms a bimetal switch and an electromagnet.

Thermal magnetic circuit breaker schematic.

The bimetal serves as a means of handling overcurrents. These circuit breakers are ideal for extreme ambient conditions feature fast breaking time and superior shock and vibration resistance. Designed for panel or plug in mounting. When there is an overload the increased current flow heats the bimetal causing it to bend.

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. These are circuit breakers which utilize two components to detect electrical faults. 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.

In american homes today thermal magnetic circuit breakers are the most common type. Thermal magnetic circuit breaker 2210 s2. Thermal magnetic circuit breaker definition. Magnetic circuit breakers have slightly higher interrupt capacity when running dc loads and some are also rated for either ac or dc currents.

The thermal trip unit protects against a continuous overload.