supply of spares for prabhu make starters , vaccum contactor 400 a , 3 . 3 kv - ht200 , vaccum interrupter for 400 a/ 3 . 3 kv vaccum contactor - ht202 , over current and short circuit relay with time lag ( short circuit setting 400-1600% ) - ht900a , isolator 400 a , 3 . 3 kv - ht100 , potential transformer 3 phase 3 . 3 kv/110v - ht350 , earth leakage relay - ht800 , core balance current transformer - ht500 , current transformer ( o/l ) - ht600 , current transformer ( ammeter ) - ht650 , 3 pole magnetic o/l relay - ht900 , thermal over load relay 4 . 5-7 . 5 a - ht900b , h . r . c . fuse 6 . 6 kv 50 a - ht1500 , copper busbar 25x6 ( 400a rating ) - ht1800 , single phasing preventer - ht2001 , terminal chamber box - ht046/1 , auxiliary switch for vaccum contactor 2 no + 2 nc - ht205 , push button with element - ht1300 , under voltage relay - ht2000