I. General:
Automatic switch is mainly used in such sites as high-rise building, post & communication, coal mines, vessels, military establishments, industrial streamlines which need the uninterrupted power. It mainly use in the circuit of AC400V 50Hz, and rated current up to 800V. Under the inevitable trend of dramatic increasing demand for municipal power, they can more satisfy the higher requirements for the power utilization reliability.
They are designed in a whole compact body, and the electrical-mechanical interlocking ensures that the main backup power supplies cannot be closed simultaneously. The position of both power supplies is in switch-off state designed with the isolation function.

II. Standard: IEC6094-6-1, GB14048.11
III. Operation Environment:
1. Height above sea level does not exceed 2, 000m;
2. Ambient temperature is not higher than 40 and not lower than below 5;
3. Relative humidity is not larger than 90%;
4. No explosive dangerous medium environment;
5. No rain and snow attack environment;
(Note: If the load isolation switch is expected to be used in the condition that the ambient temperature is higher than +40 or is lower than -5 - 45, customers should inform to the manufactory. )