IEC 60947-7-1, V0 UL94 flammability rating. UL, cUL, CSA, LR, DNV GL, cULus. PT Series Feed-Through Terminal Blocks. The PT series terminal blocks from Phoenix Contact are characterized by the features of the CLIPLINE complete system and by easy and tool-free wiring of conductors with ferrules or solid conductors. Features and Benefits. Push-in connection terminal blocks Easy, tool-free wiring of conductors with ferrules or solid conductors Compact design and front connection enable wiring in a confined space In addition to the testing facility in the double function shaft, all terminal blocks provide an additional test connection RoHS compliant