1.Divided according to the rated current Ie：32A、63A、100A；
2.Divided according to the pole numbers：Single pole, two poles, three poles, four poles.

3.Main technical parameters
3.1 Rated operational voltage Ue：230V(one phase)、400V(three-phase).
3.2 Rated operational current Ie：32A、63A、100A.
3.3 Rated short-time enduring current：12Ie，electrifying time 1s；
3.4 Rated short circuit engaging capacity：20Ie, electrifying time  0.1s;
3.5 Rated engaging and breaking capacity：3Ie，1.05Ue，COSф=0.65；
3.6 Operation performance：Empty load 8500 times, with load 1500 times, total 10000 times.
      COSф=O.8，Operation frequency 120times/h.

Application environment conditions
3.1 Ambient air temperature-5℃～+40℃，average temperature not exceeding+35℃.
3.2 Height above sea level does not exceed 2000m.
3.3 Relative humidity of the atmosphere at +40℃ not exceeding 50％, the most humid month 90％。
3.4 Pollution level: Level 2
3.5 Service class AC-22A
3.6 Installation class Ⅱ, Ш。
3.7 Installation form adopts TH35-7.5 profiled bar installation rail, and the pitch of its installation face to the vertical plane cannot exceed 5°.

Structure characteristics:
The contactor system of this switch adopts double breaking points bolt structure and for big current selecting two groups parallel contactors parallel connection, which both increases the capacity of the current and put the electric kinetic power compensation into full play. At the same time, the handle operational organ can realize fast on-off using the stored energy of the spring. This overcomes the influence of the slow operation speed of man and greatly enhances the reliability of the work. The open and close state of the contactors is shown by the eye catching color marks, which can prevent from operation errors so increase the safety.