GCB (Gas Circuit Breaker) 72.5 kV LT GCB 145 kV LT GCB 252 kV LT GCB 420 kV LT GCB 550 kV LT GCB 800 kV LT GCB 69 kV 1200 A 25 kA GCB 161 kV 2000 A 50 kA GCB 345 kV 4000/6000 A 63 kA GCB 1 BACK
