What is the difference between 2P and 1P+N of circuit breaker?

Time:2021-9-18 Category:Faqs

P represents the number of poles, N represents the zero line, 2P represents that both poles of the miniature circuit breaker have thermal and magnetic protection functions, and the width is 36mm;
And 1P+N, only the hot wire thermal magnetic protection function, the N pole has no thermal magnetic protection function, but it will be disconnected from the live wire at the same time, the width is 18mm;
Therefore, 1P+N is more economical than 2P, and it also has higher safety. It is suitable for applications with small current such as lighting circuits.

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