The MS T285S08UK from MS Power is a Silicon Controlled Rectifier with Breakover Voltage 800 V, Breakover Current 7850 to 8500 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 T285S08UK can be seen below.