Thermal Magnetic Circuit Breaker Diagram

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

Thermal magnetic circuit breaker diagram.

In american homes today thermal magnetic circuit breakers are the most common type. 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. The traditional molded case circuit breaker uses electromechanical thermal magnetic trip units that may be fixed or interchangeable. Thermal magnetic circuit breakers contain two different switching mechanisms a bimetal switch and an electromagnet.

1 1 are available in two types. The bimetal serves as a means of handling overcurrents. 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. Protecting the conductors and equipment connected to the.

Type lt or mt with thermal magnetic trip functions described in this instruction leaflet or type les electronic seltronic trip. Electrical surges can cause short. 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. 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.

An mccb provides protection by combining a temperature sensitive device with a current sensitive electromagnetic device. Circuit breakers may also use the higher current caused by the fault to separate the contacts such as thermal expansion or a magnetic field.