1) rated current

    According to GB/T 11919-2001, the domestic series I, namely 16, 32, 63, 125A.

2) Rated voltage

    The voltage specifications are divided into two categories (voltage levels are displayed in the shell color):

    (1) ≤ 50V: 20 ~ 25V (purple), 40 ~ 50V (white);

    (2) >50V: 100 to 130V (yellow), 200 to 250V (blue), 380 to 480V (red), and 500 to 690V (black).

    The domestic power grid generally uses AC 220V and 380V.

3) Rated frequency

    50 and 60, 100 to 300, >300 to 500 Hz. Domestic power grids are generally used at 50 Hz.

4) Ground contact position

    The rated voltage is greater than 50V, and the ground position is 1~12 o'clock, which is determined by the rated voltage and frequency.

    Generally, the pole position is usually 6 o'clock.

5) pole number

   (1) When the rated voltage is less than or equal to 50V, there are 2 poles (2P) and 3 poles (3P)

   (2) When the rated voltage is greater than 50V, the number of poles of single-phase and three-phase power supply is different, so the number of poles or sockets of the socket is divided into 3 poles (2P+E), 4 poles (3P+E) and 5 poles (3P). +N+E).

6) Description of protection level

     Generally divided into: IP44, IP67

     (1) IP44: It can prevent the water spray in all directions and the danger of solids above 1mmm. The common industries include automatic production equipment, packaging equipment, injection molding machines, stage lighting and sound, construction machinery, generator sets, power distribution cabinets, etc. Wait.

     (2) IP67: It can prevent immersion below 15cm (soaking time for 30 minutes) and completely prevent dust from being affected. Commonly used industries are: mining machinery, outdoor sports field transmission and distribution equipment and so on.

Industrial plugs and sockets and connectors have entered various industries, such as power, construction, port terminals, machinery industry and modern large buildings.