What is the type of leakage protector?

1. Model parameters of 5SM leakage protector

Specification/model: 5SM; 

Scope of application: used in power distribution lines and electrical equipment, direct or indirect contact with charged bodies (including human or biological shock) caused by leakage of electricity, fire accidents and insulation damage and other faults protection;Wide range of use, rated operating current from 16 -- 80A, rated fault current from 10 -- 500mA.The shell of the leakage switch is made of thermosetting material, which has high heat resistance, impact resistance and insulation strength.The leakage switch is of standard modular structure in shape, small in size and light in weight. The installation parts are made of metal sheets and springs, which can be safely and firmly installed on the 35mm standard guide rail.

For the 5SM series leakage switch, the funnel-type combination terminal is used to make the connection simple and reliable, and the lower terminal can be connected to the busbar bar.In addition, an auxiliary switch can be added to its side.For the 5SU series leakage switch, it has not only the leakage protection function, but also the short circuit and overload protection function, and has a strong current limiting ability, the energy limit level is up to 3 (except 5SU3747).Series of products are electromagnetic tripping system, no need for auxiliary voltage, safer use, and not affected by voltage fluctuations and climate and environmental factors.

Rated working voltage: ac230/400v.Rated operating current: 16 -- 80A.Rated leakage current: 10 -- 500mA.Trip feature (for 5SU).B,C breaking ability (for 5SU).4.5ka, 6KA, 10KA, 20KA.Number of poles: 2P(1P+N), 4P(3P+N).Standard: IEC1008, IEC1009, DIN VDE 0664, etc.

Ii. Type of low-voltage leakage protector

Low voltage electrical leakage protector model has "DZL18-20 series leakage switch (polar), DZL31 leakage protector (poles), K series leakage protector (2, 3, 4), DBK2 series leakage protection switch, DZL43, FIN series leakage protection switch, leakage protector, F360 E4FL column series leakage protection switch, DZL29 series earth leakage circuit breaker etc series models.

Low voltage leakage protection device (switch) leakage action current is divided into 10, 20, 30, 100, 300, 500 milliamperes and other specifications, rated current is 10, 16, 20, 25, 32, 40, 63, 80, 100, 120, 150...Amperes, etc.

Although the national standard GB 50096-1999 "residential design specification" clearly defines that every household shall be installed, every unit shall be installed, and the whole building shall be installed with low-voltage leakage protector, but in fact there are great problems.Because as long as there is a little leakage of electricity will cause the whole house, the entire unit, the entire building of the trip power failure.Some electric industry departments do not even plan to use the three-phase air switch even the unit distribution box. The reason is that "one phase short-circuit will trip the whole unit together, expanding the scope of power failure".So now they are only following the "installation of low voltage leakage protectors (switches) in socket loops" specification.

General every household to install low-voltage leakage protection device (switch), can choose the leakage action current is 10, 20, 30 milliamperes, rated current 32A (less than 140 square meters), 60 amperes (more than 160 square meters), each unit to install, the whole building to install, you can multiply the total number of households by 20 amperes to choose the rated current of the switch.Choose leakage action current 100- 300 ma low voltage leakage protector (switch).

When the human body and the earth are not insulated, people touch the phase line on the ground called single-phase shock.In the low-voltage network, when the person occurs single-phase electric shock or the household electrical equipment to the earth leakage, can be automatically completed within the specified time to cut off the power supply of the device, known as leakage protector or leakage automatic switch.Household electricity is generally single-phase. In household electricity, installing single-phase leakage protector is one of the most important technical measures to prevent personal single-phase electric shock and protect the safe operation of household appliances.How to choose single-phase leakage protector for household life?Small make up think mainly from the following points to consider.