IS:04064 - 1967 (with Amendment No.3 & 4); Specification for Normal Duty Air-Break Switches and Composite Units of Air-Break Switches and Fuse for Voltages not Exceeding 1000 Volts 

 - New Delhi  BIS  1967 
 - 21p+3p 
<br/><br/><label>Universal Decimal Class. No.: </label> /