gw3 series universal type circuit breaker-凯发一触即发
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
