AIR CIRCUIT BREAKERS: Supply & erection of air circuit-breaker on the existing industrial panel having Ics=Icu=Icw (1 Sec)=50KA and above, microprocessor based , Overload,Short Circuit,Earth Fault protection with 100 % neutral With display and spreader links, including bonding to the existing earth with suitable glands and making necessary connections with suitable size of thimbles as required by the Engineer-in-Charge at site and as per PWD General Specifiactions (Make: L&T-U Power OMEGA, ABB-E Max, Seimens-3WL, Schneider-MVS ):- Air circuit-breaker electrically operated (electrical draw-out type), 4 pole, 800amp. 415 volts complete.