Residual Current Circuit Breaker
RCCB named Residual Current Circuit Breaker. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, Residual current circuit breaker/RCCB(without over-current protection) will cut off the power rapidly to protect human safety and prevent the accident due to the current leakage. The rccb switch which made from Korlen electric can be used as infrequent changeover of the line in normal situation.
Korlen electric ---- the rccb switch manufacturer,produces types of Residual Current Circuit Breaker. It is applicable to industrial site, commercial site, tall building and civil house.
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Rated current: refers to the maximum safe current allowed to pass when the speed control switch is turned on. When this value is exceeded, the contact of the speed control switch will be burnt due to excessive current.
Insulation resistance: refers to the resistance value of the conductor part and the insulation part of the speed control switch, and the insulation resistance value should be above 100MΩ.
Contact resistance: refers to the resistance value between each pair of contacts when the speed control switch is turned on. Generally, it is required to be 0.1-0.5Ω or less. The smaller the value, the better.
Withstand voltage: refers to the highest voltage that the speed control switch can withstand between the conductor and the ground.
Lifetime: refers to the number of times the speed switch can be operated under normal working conditions. The general requirement is about 5000-35000 times.
Main parameters of the speed switch
Rated voltage: refers to the safe voltage allowed by the speed control switch during normal operation. The voltage applied across the speed control switch is greater than this value, which will cause fire breakdown between the two contacts.