The elevation must not be above 2000m
Surrounding medium temperature limit to + 40 ℃, the lower limit of 25 ℃;
Installation site of air relative humidity when the highest temperature is + 40 ℃ not more than 50%, at a lower temperature can have higher relative humidity, such as 20 ℃ at 90%.Due to temperature change occasionally produce condensation special measures should be taken
Installation site pollution level 2;
Installation category main circuit for Ⅲ;
| Pole | Use category | Rated insulation voltage Ui/V | Rated operating voltage Ue/V | Rated operating current Ie/A | Rated making breaking capacity /A | Rated short-time withstand current /A | Rated short-time making capacity /A |
| 1 | AC-23A | 690 | 230 | 32、40、50、
63、80、100、125 |
3000 | 2000A/1s | 3000 |
| 2,3,4 | 400 |
