1600 V phase control thyristor disc Phase Control Thyristor 1600 V, 3160 A with 111 mm diameter and a height of 26 mm assembled in high reliable, robust and hermetic sealed ceramic housings. The T2600N prime disc is specially optimized for UPS-Bypass applications and offers the highest current capability in the market. The T3800N16TOF prime disc is specially optimized for UPS-Bypass applications and offers the highest current capability in the market.