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W7NL Residual Current Breaker Overload

Application
W7NL residual curretn breaker overload are mainly applied to the AC 50Hz/60Hz circuit rated
240V and 32A or below. They have the elctric leakage (electric shock), overload, short circuit
and so on protection function. The over voltage protection function can also be provided upon
requirements. They are mainly used to protect the building illumination and power distribution
system.

Type and meaning
W7 NL - 40
Rated current of frame
Derive code (Electron earth leakage circuit breaker)
Earth leakage circuit breaker

Main technical parameters
Rated Rated I△n I△no Breaking times (S) I△mA
voltage (V) cuttent (A) (mA) (mA) I△n 2I△n 0.25A 500A (A)
240 16,10,16,20,25,32 10,30,100,300 15,50 0.1 0.05 0.04 0.04 3000,4500,6000

Normal opeation conditions
■ Ambient air temperature:ambient air temperature reanges form-5℃~+40℃, not exceeding 35℃
averagely in 24 hous;
■ Location:installation location can not exceed 2000 meters above sea level;
■ Air conditions:relative humidity in the installation place can not execeed 50% when the air
reaches the highest temperature +40℃, the averate minmum temperature when it is the wettest
can not exceed 25℃, relative humidity not exceeding 90%;
■ Installation conditions:installation is divded into grade II, grade III;
■ Installationpollution grage:installationpollution grade is grade ii;
■ Installationconditions:magnetic field outside the instation place can not exceed 5times of the site
of terrestrial magnetism in all direction. Normally speaking, RCBO should be mounted vertically.
the operation handle puts through power source upward, there should be no notable impact and
vibration in the installatin place.
Notice

■ Leakage protection function of RCBO is tested and adjusted by the manufacture, users can not
open the products at random during usage;
■ After using RCBO for a certain time (normally one month), test button should be pressed once in
a state of making the circuit to check whether the fuction of RCBO is normal and reliable (press
test button once, the RCBO can break off once). If abnormal, it should be unloaded and sent to
the manufacture for rpair.
■ RCBO must not be wetted or soaked by rain, snow or water during the couse of transportation,
stroage and usage.
Residual Current Breaker Overload
Dimensions

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