1. Generally, two pole (2P) air switch is used for main power protection in families, and single pole (1P) is used for branch protection; If the rated current of the air switch is selected too small, the air switch is easy to trip frequently, causing unnecessary power outages. If the rated current is selected too large, the expected protection effect will not be achieved. Therefore, it is important to correctly select the rated capacity and current of the air switch for home installation. 2. At present, DZ series air switches (miniature circuit breakers with leakage protection) are commonly used in families, and the following models/
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