Generally, it is better to install the air switch at the outlet end of the electricity meter, because the distance of the line is relatively far, if the leakage switch is installed, the failure rate will increase relatively, which may be caused by the wire.Leakage switch installed before the use of equipment is better.

The difference between air switch and leakage switch

Air switch is if exceed its rated current current action, and leakage switch is if exceed its rated current or leakage will trip, mainly used for home or office lighting, guarantee the safety.

1, the air switch is our common common, its correct name is called the air circuit breaker.Air circuit breakers are generally low-voltage, that is, rated working voltage of 1Kv.Air circuit breakers are switchgear with multiple protective functions that can cut and close circuits at rated voltage and rated operating current.The type and protection mode of its protection function are selected by users according to their needs.Such as short circuit protection, overcurrent protection, shunt control, undervoltage protection.The first two kinds of protection are the basic configuration of air circuit breaker, and the last two kinds are the optional function.So the air circuit breaker can also be in the fault state (load short circuit, load overcurrent, low voltage, etc.) to cut off the electrical circuit.

2, the correct name of the leakage switch is leakage protection circuit breaker, is a special protection function (leakage protection) of the air circuit breaker.In addition to the basic functions of air circuit breaker, it can also quickly break the switch in the case of load circuit leakage (the leakage current reaches the set value), so as to avoid the damage to personnel and adverse impact on electrical equipment in the case of load circuit leakage.

Can the leakage switch replace the air switch

Leakage switch cannot replace air switch.Although the leakage switch has a more protective function than the air switch, the phenomenon of frequent tripping will occur due to the possibility of leakage in the operation process, resulting in frequent power failure of the load, affecting the continuous and normal operation of electrical equipment.Therefore, it is generally only used in temporary power supply at the construction site or in the socket circuit of industrial and civil buildings.

The leakage switch

Leakage switch can also be said to be a kind of air switch, mechanical action, arc extinguishing mode are similar.However, as the main protection of the leakage switch is the person, the general action value is milliamperes.In addition, the operation detection method is different: the leakage switch USES residual current protection device, which detects the residual current, i.e. the algebraic sum of instantaneous values of phase line and neutral line current in the protected circuit (including the three-phase unbalanced current and harmonic current in the neutral line).For this reason, its action current only needs to avoid the normal leakage current value (milliamperes), so it can be very sensitive to cut off the grounding fault, and prevent direct contact with electric shock.The air switch is a pure overcurrent trip (amperage).

Air switch

Air switches are divided into: miniature circuit breakers and molded case circuit breakers, their basic functions are: 1.2. Short circuit protection.But the difference lies in the short circuit breaking ability is different, the specific value to see the air switch model and manufacturers.Leakage protection switch is mainly for leakage protection, general residential design leakage current is 30mA, the value of 30mA is combined with the human resistance and electric voltage calculation.When the human body is electrocuted, the current is directly introduced into the earth through the human body. At this time, a part of the current does not return to the grid through the zero line. When the leakage switch detects the lost current of this part, it is considered that there is leakage, and the switch will automatically trip, thus playing a protective role.

Air opening can only play overload, short circuit trip.The leakage switch is equipped with a set of anti-leakage device on the basis of air opening, which can play the role of leakage trip.To protect the safety of life and electrical equipment.Remember that the leakage switch is only used to protect the body when touching a single wire, if the body touches the zero line and the fire line at the same time, it will not protect the ~

Empty switch only on and off the current, long time beyond the set value will protect the jump, also with short circuit protection;Leakage protection is disconnected when the leakage current exceeds the set value.Some open air with leakage protection.

Press the test button when there is no power on the air switch, or the test button when there is no power on the leakage switch.