Description 
  2.6 Possible uses and portfolio 
3VA27 molded case circuit breakers & 3WL10 air circuit breakers 
Manual, 10/2018, L1V30499596002-01 
21 
 
Possible uses and portfolio 
Possible uses 
The circuit breaker performs the different protection tasks and can be used in the following 
areas: 
 
Breaking capacity 3WL10: 42 to 66 kA / 3VA27: 55 to 110 kA 
Segments  Commercial buil-
dings 
Infrastructure  Industrial buildings  Functional  
enclosure 
Production/ 
process 
Examples  Office buildings, 
banks,  
hotels, cinemas, 
shopping malls, 
hospitals, universi-
ties,  
Airports,  
train stations,  
sports stadiums, 
ports, 
exhibition sites 
Industrial parks,  
warehouses,  
logistics centers 
Paper industry, 
computer centers, 
oil & gas industry, 
foodstuffs 
industry 
Presses, galvaniz-
ing lines, rolling 
mills, grinding mills, 
agitators and mix-
ers, production 
lines 
 
The circuit breaker is used for the following functions: 
●  Line protection 
●  Generator protection 
●  Motor protection 
●  High breaking capacity 
–  3WL10 air circuit breakers: Up to 66 kA 
–  3VA27 molded case circuit breakers: Up to 110 kA 
●  Selectivity, in particular, for high coordination requirements based on time, current, and 
energy discrimination. 
●  Communication 
●  As a version of a non-automatic air circuit breaker in accordance with IEC 60947-3