procurement of spares for ece make ocb 3 . 3 kv/400amps , hop-5 from oem/opm/oes . , item description , fixed contact assembly ( 400a ) , arc control pot ( separator ) , barrier , insulated bolt ( big ) , insulated bolt ( small ) , carriage assembly complete with operating mechanism ( 400/630a ) , moving contact assembly , jaw contact assembly set , auxiliary plug & socket assembly complete set , guide pin ( big ) , guide pin ( small ) , lead screw assembly , operating mechanism complete set , rod holder assembly , shunt trip coil assembly , isolating spout assembly with nylon shroud , elr core balance current transformer , power pack unit 110v dc , instrument chamber box complete with internal wiring including selector switches , indication lamps , voltmeter , ampere meter , fuse base etc . , epoxy resin cast current transformer ratio 400/200/5/5a , epoxy resin cast current transformer ratio 200/100/5/5a , potential transformer 3 . 3kv/110v , p . t . connector ( copper ) , operating shutter assembly , bushbar connection r/y/b , copper connection complete set ( consisting of 03 pcs . in phase ) r/y/b , trolley complete with all accessories , epoxy ocb bushing 3/4 ( 400/630a ) , earthing jaw contact , partition plate assembly , epoxy resin cast current transformer ratio 50/25/5/5a , ocb tank partition , earthing bar contact