The MS T250S03UK from MS Power is a Silicon Controlled Rectifier with Breakover Voltage 300 V, Breakover Current 6000 to 7000 A, Gate Trigger Voltage 3.0 V, Gate Trigger Current 200 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Stud Mount. More details for MS T250S03UK can be seen below.