LEJBX1-1-63-20.0-F-M3-T

Circuit Breakers operate by opening and closing electrical circuits to protect devices and power systems from surges, overloads, and short circuits. LEJBX1-1-63-20.0-F-M3-T is a typical example of a circuit breaker used for industrial, commercial and residential applications. It is a manually-actuated thermal-magnetic trip system circuit breaker, designed for protecting low voltage distribution networks from the hazards of over current.

1. Application Field of the LEJBX1-1-63-20.0-F-M3-T Circuit Breaker

The LEJBX1-1-63-20.0-F-M3-T Circuit Breaker is suitable for protecting circuits used in industrial or commercial applications, such as distribution systems with voltage below 690V AC and 50/60Hz. It is used in a variety of applications, including general industry, energy systems, commercial power distribution, and more. It is also suitable for protection of motors, capacitors, transformers, and other equipment. The device is designed to handle circuit loads up to 63A.

2. Working Principle of the LEJBX1-1-63-20.0-F-M3-T Circuit Breaker

The LEJBX1-1-63-20.0-F-M3-T Circuit Breaker consists of two independent current-sensing elements: a thermal element, which is a metal bimetallic strip, and a magnetic element, which is an electromagnet. In normal operation, the contactor is kept closed by the return spring. If the current passing through the circuit exceeds the rated value, the bimetallic strip will be heated by the Joule effect and deflect. This will cause the contactor to open, breaking the circuit. At the same time, the electromagnet will absorb excess energy to further open the contactor, thus preventing it from closing until the current falls below the threshold value. Other mechanisms such as auxiliary switches and shunt trips can also be used to control the breaker\'s operation. After the trip, the circuit breaker can be reset manually or automatically, depending on the configuration.

Conclusion

The LEJBX1-1-63-20.0-F-M3-T Circuit Breaker is a general purpose protection device for low voltage distribution systems. Its thermal-magnetic trip system provides reliable protection from overcurrents. With its manual or automatic reset options, it is suitable for commercial, industrial, and residential applications.