The 3000PU480 from RIR Power Electronics is a Silicon Controlled Rectifier with Breakover Voltage 4800 V, Breakover Current 36000 A, Gate Trigger Voltage 3.0 V, Gate Trigger Current 300 mA, Temperature Operating Range -40 to 125 Degree C. Tags: Disc. More details for 3000PU480 can be seen below.