Thermal Magnetic Circuit Breaker Diagram

The majority of circuit breakers are thermal magnetic which means they accomplish electrical protection by combining two mechanisms that respond to heat and magnetic fields respectively.

Thermal magnetic circuit breaker diagram.

An mccb provides protection by combining a temperature sensitive device with a current sensitive electromagnetic device. Two mechanisms are used simultaneously to offer an end result that combines the response characteristics of each but the goal of both is the same. Type lt or mt with thermal magnetic trip functions described in this instruction leaflet or type les electronic seltronic trip. Both these devices act mechanically on the trip mechanism.

Protecting the conductors and equipment connected to the. Circuit breakers may also use the higher current caused by the fault to separate the contacts such as thermal expansion or a magnetic field. These are circuit breakers which utilize two components to detect electrical faults. Thermal magnetic circuit breaker definition.

The bimetal serves as a means of handling overcurrents. 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. Thermal magnetic circuit breakers contain two different switching mechanisms a bimetal switch and an electromagnet. 1 1 are available in two types.

Electrical surges can cause short. 1 1 l frame and mdl frame series c circuit breaker thermal magnetic trip unit type lt general information trip units for l frame and mdl frame series c circuit breakers fig.