The MS T630C09 from MS Power is a Silicon Controlled Rectifier with Breakover Voltage 900 V, Breakover Current 8000 to 9000 A, Gate Trigger Voltage 3.0 V, Gate Trigger Current 150 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Disc. More details for MS T630C09 can be seen below.