PP11-2-2.00A-XX-V

Circuit Breakers

Circuit breakers are considered to be the most important switchgear equipment in an electrical system, and when an overload or short circuit occurs, it acts as the safety valve for the system. In order to meet the needs of the electrical system and different load requirements, several types of circuit breakers have been developed. One of them is PP11-2-2.00A-XX-V which has widely application in many industries and premise. This essay will mainly focus on the application fields and working principle of PP11-2-2.00A-XX-V circuit breakers.

Application Fields of PP11-2-2.00A-XX-V Circuit Breakers

PP11-2-2.00A-XX-V circuit breakers are mainly used in places where there is frequent change in load current, infrequent operation, and medium to high voltage systems with relatively low overvoltage protection. Generally speaking, these circuit breakers are suitable for protecting distribution circuits of power plants, high-rise buildings, and industrial and mining enterprises, as well as large-scale, medium and small motor circuits.

Additionally, these breakers can also be used outdoors and indoors, so they can be applied in exposed installations, such as power lines, petrochemical plants and roads, as well as places with damp and corrosive atmospheres, such as ships and chemical plants. Besides, the circuit breakers can also be equipped with a trip coil for mutual protection of parallel systems.

Working Principle of PP11-2-2.00A-XX-V Circuit Breakers

When an overload or short circuit occurs in an electrical system, the PP11-2-2.00A-XX-V circuit breaker is activated to cut off the circuit. In an ideal state, the action should be instantaneous, reliable, and sensitive. Then, the circuit breaker must be automatically reset so the system can return to normal operation without manual intervention.

The working principle of PP11-2-2.00A-XX-V circuit breakers can be explained in three steps. First, when the current in the power line increases, a coil inside the circuit breaker will be magnetized, boosting the current to a greater extent and causing a mechanical trip. Secondly, during the trip process, the tripping element—a rotating bar or a lifting rod—will be raised so that the arc, formed when disconnecting the live power line, can be quickly extinguished. Lastly, under the action of an outer shield or a bi-metal strip, the pressure on the contact line decreases and the contacts can reconnect the power system.

Conclusion

PP11-2-2.00A-XX-V circuit breakers, as one of the most important and widely used switchgear equipment, are mainly used in places with frequent change in load current, infrequent operation, and medium to high voltage systems with relatively low overvoltage protection. Furthermore, its working principle includes magnetizing a coil, tripping of a rotating bar or a lifting rod, and resetting of the contact line by an outer shield or a bi-metal strip.

Overall, due to the advantages of PP11-2-2.00A-XX-V circuit breakers, they have been used in a variety of applications and proved themselves to be an extremely effective safeguarding device.