ZN28-12 series indoor high voltage vacuum circuit breaker

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1. Overview
- Series high-voltage vacuum circuit breakers Series vacuum circuit breakers are rated voltage, three-phase AC high-voltage indoor switching equipment. This product complies with the standards. The overall structure is that the switch body and the operating mechanism are integrated. It is suitable for various fixed switch cabinets, such as -, -, etc. This product can be equipped with type DC electromagnetic operating mechanism and type spring operating mechanism. 2. Environmental conditions for use:
) Altitude: and below (for plateau type)
) Ambient temperature: upper limit +℃, lower limit -℃ (storage and transportation allowed at ℃)
3) Relative humidity: The daily average value is not greater than the monthly average value of the water vapor pressure. The daily average value of the water vapor pressure is not greater than the monthly average value of the water vapor pressure. During high temperatures, condensation may occur when the temperature drops sharply
) around The air is not significantly polluted by dust, smoke, corrosive and flammable gases, steam or salt spray
) The earthquake intensity does not exceed