Circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time.
Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage is relatively fuzzy.
Generally, those above 3kV are called high-voltage electrical appliances. In addition, the classification of circuit breakers can also be divided according to the number of poles: single-pole, two-pole, three-pole and four-pole, etc.; according to the installation method: there are plug-in type, fixed type and drawer type, etc.
Post time: Sep-26-2021
