In fact, the leakage circuit breaker is a common circuit breaker, adding an annex. At present, most of the accessories on the market have been installed at the factory. Users can also purchase attachments for installation.
This leakage protector attachment provides a function - leakage protection. When an electric leakage accident occurs in the circuit, the device can automatically trip and cut off the power.
The leakage switch can not replace the air switch. Although the leakage switch than air switch has a protective function, but in the process of operation because of the possibility of leakage often exist and often appear the phenomenon of the trip, often lead to load power outages, effects of electrical equipment for the continuous and normal operation. Therefore, usually only in the construction site temporary electricity or industrial and civil building socket circuit used. Leakage switch can also be said to be a kind of air switch, mechanical action, arc extinguishing methods are similar. But because the leakage switch protects mainly the human body, the general action value is Ma level.
Leakage circuit breaker with air switch detection in different ways: the leakage switch with the residual current protection device, it is detected by the residual current, the algebra and the protected circuit line and neutral line current instantaneous value (including three-phase unbalanced current in the neutral harmonic current). For this reason, the current of its operation only needs to escape from the normal leakage current value (MA level), so the grounding fault can be cut off very sensitively, and the direct contact with the electric shock can be avoided. The air switch is a purely over current trip. The circuit breaker is used to prevent the overload or short circuit of the circuit and to cut off the power supply when the line is maintained
Leakage circuit breaker is emphasized strictly within the specified time, if it occurs beyond the specified current, mechanical structure of the buckle
From the point of view of use, the circuit breaker is used to protect the equipment and the safety of the circuit. The leakage protector emphasizes the protection of the human body and the prevention of fire