Magnetic Trip Circuit Breaker

Excessive electrical currents will heat the bimetallic strip enough to bend it towards a trip bar that turns the circuit off.

Magnetic trip circuit breaker.

Overloaded circuits loose or faulty wiring and lightning can cause the circuit breaker to trip. Electronic trip breakers are typically built as molded case circuit breakers mccb which means they require more space than a miniature plug in circuit breakers. The magnetic protection mechanism is calibrated to trip with high magnitude fault currents but does not respond to. The magnetic trip unit made up by an electromagnetic device with fixed fixed.

The high current induces a very strong magnetic field in a coil inside the circuit breaker. The bimetal serves as a means of handling overcurrents. The trip unit is the part of the circuit breaker that determines when the contacts will open automatically. Suitable for use in power tools household equipment power supply and chargers and industrial applications.

The magnetic field moves a switch tripping the breaker and clearing the fault. 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. A magnetic trip element circuit breaker uses an electromagnet in series with the circuit load as in figure 2 20. Thermal magnetic circuit breakers contain two different switching mechanisms a bimetal switch and an electromagnet.

The thermal trip unit made up by a bimetal thermal device which actuates the opening of a circuit breaker with a delay depending on the overcurrent value. The t11 is easy to install with snap in mount and quick connect terminals. Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume. With normal current the electromagnet will not have enough attraction to the trip bar to move it and the contacts will remain closed as shown in figure 2 20 view a.

The strength of the. In a thermal magnetic circuit breaker the trip unit includes elements designed to sense the heat resulting from an overload condition and the high current resulting from a short circuit. There are other devices able to break a circuit during a surge or short circuit each with its own limitations. Thermal magnetic tripping units the thermomagnetic trip unit consists of two parts.

Schurter t11 circuit breaker is a snap in 1 pole thermal circuit breaker that offers positively trip free release. This trip unit is intended for the protection against overloads.