Circuit breaker models are generally composed of text symbols and numbers in the following manner according to the provisions of national technical standards:

—Product letter code, represented by the following letters: S—Low oil circuit breaker D—Oil circuit breaker; K—Air circuit breaker;

L—Sulfur hexafluoride circuit breaker; Z—Vacuum circuit breaker; Q—Gas production circuit breaker; C—Magnetic blow circuit breaker .

②—Installation location code; N—indoor, W—outdoor.

③—Design series sequence number; represented by numbers 1, 2, 3...

④—Rated voltage, KV.

⑤—Other supplementary operating characteristics signs, G—improved type, F—split-phase operation.

⑥—Rated current, A.

⑦—Rated breaking current, KA.

⑧—Special environment code. Like DZ47-63 refers to the open circuit. If DZ47LE-63 has leakage current.

C16: refers to the current of 16A. Generally, households use C10-16, and projects use C32 or above.