Double-level terminal block PTTB-2.5. 0.14 to 4 mm² cross section. 26 to 12 AWG. Push-in connection type. NS 35/7.5 and NS 35/15 mounting type. The push-in connection terminal blocks are characterized by the system features of the CLIPLINE complete system and by easy and tool-free wiring of conductors with ferrules or solid conductors. The 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. Tested for railway applications.