■Ambient air temperature: -5℃~+40℃, and the daily average temperature does not exceed +35℃.
■Altitude does not exceed 2000m.
■Atmospheric relative humidity at ambient air temperature of + 40℃ is not more than 50%, in the low temperature can have higher relative humidity. For example, + 20℃for 90% .Consider the temperature changes in product on the surface of the gel and take appropriate measures.
■Pollution level is 2.
■Electromagnetic environment is the environment B.
■ The external magnetic field in the vicinity of the circuit breaker installation site does not exceed 5 times of the geomagnetic field in any direction.
■It is installed in distribution box, power distribution cabinet or box with standard rail (TH35-7.5).
■Installation is vertical installation generally, the inclination of the installation plane and the vertical plane is not more than ± 5°, handle-up means power-on.
■Installation site without significant impact and vibration, and hazardous (explosive) media and invasion of rain and snow.
■Installation categories: Ⅱ, Ⅲ level.

Rated residual operating current: 30mA; Rated residual non-operating current: 15mA; Rated residual making and breaking capacity: 2000A; Leakage action time: ≤ 0.1s; Withstand impulse voltage: Uimp = 4kV; Delay action characteristics: (see the table)

the electric leakage circuit breaker is current action electronic leakage circuit breaker. It is an integrative miniature leakage protection circuit breaker designed for single-phase circuit, has large capacity and small size, to save resources and space for the user installation.
the electric leakage circuit breaker is mainly composed of contact, case, operating mechanism, electromagnetic system, tripping device, arc extinguishing device, zero-sequence transformer, electronic discriminating control circuit and tripping indication and other parts. The earth leakage switch has protection functions of overload, short circuit and leakage.
The working principle of the earth leakage switch
Overload protection: when the overload occurs, the bimetal promotes the lock, to make the circuit breaker trip to protect the circuit;
Short-circuit protection: When the short-circuit fault occurs, the electromagnetic coils create a strong magnetic field, the core promotes the lock quickly, to make the circuit breaker trip (cut off the power supply within 0.1s) and action protection;
Leakage protection: When leakage fault occurs in the protection circuit, current vector sum of the zero-sequence current transformer is not equal to zero, the transformer secondary output generates voltage, to make the SCR breakover, electromagnetic tripping system act, to make the trip with rod promoting circuit breaker trip, and cut off the power supply within 0.1s, which play a leakage protection.