Both these types comply with IS: 13947-3 specifications and are rated for AC-23A Duty.They have been type tested at CPRI.

Heavy duty fuse switch type FSC and CFS are specially designed to meet stringent requirements of various industrial applications. These switches are designed with castal interlock facility for use with suitable bolted type HRC fuses.

They are available in TP, TP&N, Four Pole versions. CFS is available upto 400A and FSC is made available upto 800A.