TGM1 Current Circuit Breaker Series 100A to 630A Current Circuit Breakers Main Picture: TGM1-630M/4300-630: Current-Circuit-Breaker IN=630A TGM1 – 100M/4300: IN=100A TGM1-630M/4300-400: IN=400A TGM1 – 225M/4300: IN=100A TGM1 – 225M/3300: IN = 225A TGM1 – 400L/3300: IN=225A TGM1 – 630L/3300: IN = 400A