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                The meaning of protection degree code
                


                


                

                
Protection degree for nonego
                

                
  

                


                


                Character No.
                		


                Character sign
                		


                Brief description
                		


                Type Number Nomenclature
                

                
×


                 Exempt from testing
                		


                 While omitting and don't mark the protection charater 
                

                
○


                 Exempt from protection
                		


                 Without special protection
                

                


                1
                		


                		


                 Protected against 
                 solid bodies whose
                 Dia.less than 50mm
                		
 It can protect against solid boies that Dia less than 50mm from
                 coming into shell. And protect parts of person, which is large
                 area (for example hand), from touching the electriferous or 
                 working elements inside of the shell by accident. It can't 
                 prevent from approaching the machine on purpose. 
                

                


                2
                		


                		


                 Protected against 
                 solid bodies whose 
                 Dia. not less than 
                 12.5mm
                		
 It can protect against the solid bodies whose Dia. is more than
                 12mm and length is less than 80mm from coming into shell, and
                 prevent the fingers from  touching the electriferous or working
                 elements inside of the shell.
                

                


                3
                		


                		


                 Protected against 
                 solid bodies whose 
                 Dia. not less than 
                 2.5mm
                		
 It can protect against the solid bodies that Dia is more than
                 2.5mm from coming into shell, and prevent tools and metal lines
                 that the thickness or dia. are more than 2.5mm from touching the
                 electriferous or working elements inside of the shell.
                

                


                4
                		


                		


                 Protected solid bodies 
                 whose Dia. not 
                 less than 1mm
                		
 It can protect against the solid bodies that Dia or thickness
                 are  more than 1mm from coming into shell, and prevent tools
                 and metal lines that the thickness or dia.are more than 1mm
                 from touching the electriferous or working
                 elements inside of the shell.
                

                


                5
                		


                		


                 Protected against dust
                		
 Can't downright avoid dust coming into shell, but the inlet dust can't  affect the machine working 
                

                


                6
                		


                		


                 Completely protected against dust
                		


                 Without dirt coming into the shell
                ??1 2 ??
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