Technical data   
11.17 IP degrees of protection 
  3VL IEC molded case circuit breakers 
168  System Manual, 11/2013, 110 0110 - 02 DS 03 
The degree of protection in accordance with IEC 60529 is listed in the table below: 
Table 11- 46  Overview of degrees of protection 
Molded case circuit breaker 
Molded case circuit breaker  
Finger-proof  
Protected against solid foreign bodies with a diameter 
of 12.5 mm or larger. 
 
Molded case circuit breaker with terminal cover 
Protected against access to live parts with a tool. 
Protected against solid foreign bodies with a diameter 
of 2.5 mm or larger. 
 
Plug-in molded case circuit breaker 
Finger-proof protection against solid foreign bodies 
with a diameter of 12.5 mm or larger.  
 
1)
 
 
Molded case circuit breaker with masking frame and 
motorized operating mechanism 
Protected against access to live parts with a wire. 
Protected against solid foreign bodies with a diameter 
2)
 
 
Molded case circuit breaker with masking frame for 
door cutout 
Protected against access to live parts with a wire. 
Protected against solid foreign bodies with a diameter 
2)
 
 
Molded case circuit breaker with masking frame and 
front-operated rotary operating mechanism 
Protected against access to live parts with a wire. 
Protected against solid foreign bodies with a diameter 
2)
 
Molded case circuit breaker with door coupling rotary 
operating mechanism 
Protected against ingress of dust and water jets from 
any direction. 
2)
 
  If the molded case circuit breaker is installed and the supplied covers are mounted. 
2) 
  Depending on the degree of protection of the enclosure