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As shown, a typical monostable mode timing circuit is formed by the 555 time base circuit and RP, R1, C1, and the like. Press the AN button, the trigger terminal 3 foot ground potential, then the 555 circuit is set, the output terminal 3 is high, the relay K is turned on, and the load power is turned on. When the AN is pressed, the timing starts. At the same time, because 555 is set, 7 feet is open, then C1 is charged by RP, R1. When the voltage of 6 feet exceeds the threshold level 2/3Vdd, the 555 circuit is reset, and the 3 feet are low level, then the timing ends. , K release, power off. The delay time td=1.1(RP-R1)C4, the timing length can be changed by adjusting the potentiometer RP, and the capacitor C1 should select the capacitor with small leakage current and high withstand voltage to ensure the time precision.
KNBL1-32 Residual Current Circuit Breaker With Over Load Protection
KNBL1-32 TWO FUNCTION : MCB AND RCCB FUNCTIONS
leakage breaker is suitable for the leakage protection of the line of AC 50/60Hz, rated voltage single phase 240V, rated current up to 63A. When there is human electricity shock or if the leakage current of the line exceeds the prescribed value, it will automatically cut off the power within 0.1s to protect human safety and prevent the accident due to the current leakage.
leakage breaker can protect against overload and short-circuit. It can be used to protect the line from being overloaded and short-circuited as wellas infrequent changeover of the line in normal situation. It complies with standard of IEC/EN61009-1 and GB16917.1.
KNBL1-32 Residual Current Circuit Breaker,Residual Current Circuit Breaker with Over Load Protection 1p,Residual Current Circuit Breaker with Over Load Protection 2p
Wenzhou Korlen Electric Appliances Co., Ltd. , https://www.zjmoldedcasecircuitbreaker.com