supply of triple pole (3p), switch disconnector fuse unit (sdf main switch)triple pole (3p), switch disconnector fuse unit (sdf main switch),triple pole (3p), switch disconnector fuse unit (sdf main switch) with neutral link, designated for industrial applications requiring reliable circui t protection, it typically operates at 415 volts ac 50hz and complies with is/iec:60947-1&3 standards. it is used for isolating and protecting electrical circuits. operating ac 23a application, current rating 320amps without enclosure and along with 315 amps tpn hbc fuse bs size b3 315a 32w rated conditional s/circ uit current -80ka, conforms to is:13947 (part-3). make: havells sdf model no: ihfstw4320 komapact ezo series. ] => limited