Is this an air switch or a leak protector?
The second with overload protection. Short circuit protection and leakage protection of the RCD. Also known as leakage circuit breaker.
The first is not overloaded. Short circuit protection. Only leakage protection RCD. Also known as leakage switch.
The working principle is simple to say that any electrical appliances will be hot at work and the degree of heat and power into Proportional.
