As shown in the figure, the circuit uses a dual time base circuit 556 to form a monostable delay circuit with 1/2 of 556 and each of R and C, and to perform a pole connection, thereby forming a program trigger and a long delay circuit. According to the program needs to design the delay time of each level, each stage delay Td = 1.1RC. If R1 = R2 = R3 = R4 = R5, C1 = C2 = C3 = C4 = C5, then the total delay time T4-4Td =4.4RC. If there are n levels, then Ta = 1.1nRC.
KNB2-63 Miniature Circuit Breaker
KNB2-63 Mini Circuit breakers, also named as the air switch which have a short for arc extinguishing device. It is a switch role, and also is a automatic protection of low-voltage electrical distribution. Its role is equivalent to the combination of switch. Fuse. Thermal Relay and other electrical components. It mainly used for short circuit and overload protection. Generally, According to the poles, mini Circuit breaker can be divided into 1P , 1P+N , 2P, 3P and 4P.
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