1, my company's industrial plug socket current divided into several?
 Answer: Industry Plug and socket current general regulation is: 16A, 32A, 63A, 125A several series.

2, The industrial plug and socket voltage is divided into several? 
Answer: Industry Plug and  socket voltage general regulation is: 110V, 220V, 380V a few kinds of series. The Standard 3pin industrial plug is 220V, the color of the shell is blue; 
4pin and 5pin  industrial plug is 380V, the color of the Shell is red.

3, Applicable range of industrial plug and socket?
Answer: The industrial plug and socket produced  are widely used in power supply, mechanical equipment, construction site,
 chemical industry, electronics, ports, mines, water supply and drainage and sewage treatment works.

4, Water-proof grade of industrial plug and socket? 
Answer: IndustryPlug and Socket Waterproof Grade General provision is: IP44, IP55, IP67 several kinds of series.

5、Connector rated current calculation rule?

6, Number of contact pairs per pair rated current drop?

7, the choice of the plug and socket: 

The socket matching with the industrial plug is divided into panel mount socket,surface mount socket and connector. 
The panel mount socket must be matched with the power box ,can not be used alone.

Surface mount socketcan be fixed to the floor, wall or production line, it must be fixed to choose it.

Connector equivalent to the moving socket, also known as connect socket, can not be fixed, the room with most of the wiring.

8, Industrial plug and  socket protection level:

Generally divided into IP44 and IP67 two kinds.

IP44 protection: can prevent more than 1mm of dust particles harm, but also prevent from all directions of the spray water harm. It's usually used indoors. 

IP67 protection: completely prevent the harm of dust, prevent the harm of high-pressure water spray in all directions, but also prevent 15 cm to 1m water immersion in half an hour of the harm. Outdoor use is safer and more reliable.

9, To be continued...