INTERNATIONAL ELECTROTECHNICAL COMMISSION <br/><br/>
IEC: 947- 2 (Ed-2.1) - 1998; Low-voltage switchgear and controlgear Part 2;Circuit breakers 

 - 2.1 
 - Geneva  IEC  1998 
 - 273 
<br/><br/> Tr. to HV. 
<br/><br/><label>Universal Decimal Class. No.: </label> /