1P+N leakage circuit breaker is:
Monopole two wire, that is, a single piece of air switch, and a leakage protection module combined with the switch, the fire line, zero line together in and out of the combination switch, when the leakage occurs when the leakage module drives the air switch trip, only the fire line and the external network disconnected, and the zero line is constantly open.
2P leakage circuit breaker is:
Two – wire leakage protector, a 2 – piece air switch plus a leakage module. When leakage occurs, leakage module drives the air switch to trip! Fire line, zero line and external network electricity all disconnected. Safer!