gw3 series universal type circuit breaker-ag凯发k8国际
model and meaning
model and meaning
applicable environment and installation condition
● ambient air temperature is not more than 55 ℃ and no less than 40 ℃。
● the altitude does not exceed 2000 m installation site。
● when the highest temperature is around 40 ℃,air relative humidity is not more than 50%;at low temperatures,can have a higher relative humidity,for example 20 ℃ at 90%,due to temperature change occasionally produce condensation special measures should be taken。
● circuit breaker shall be installed in accordance with the requirements of this manual installation。the vertical slope of the circuit breaker is not more than 5 °,circuit breaker main circuit and undervoltage trip coils、power transformer for the installation of the primary coil category iv,the rest of the auxiliary circuit、control circuit for ⅲ installation category。
● pollution levels for level 3。
● circuit breaker generally adopt open installation,can achieve ip30 protection grade;circuit breaker installed in the cabinet put oneself in another's little room,with the door frame,can achieve ip40 protection grade;installed in the cabinet put oneself in another's small indoor and mounted to the frame and transparent cover,protection grade can reach ip54。
parameter selection table quickly