TL series single conductor T-clamp is a kind of T-clamp used to connect branch conductor to the trunk conductor, including: T-shaped substrate, with trunk groove in the transverse part, with wire holes in the longitudinal part, metal linings are set on the inner wall of trunk groove and branch hole, and the two metal linings are connected as a whole, and the upper surface of the longitudinal part of the substrate is threaded with branch conductor compression screws; Trunk slot cover is inserted with trunk slot, and its upper surface is screwed with dry conductor compression screw; The T-shaped upper cover is buckled with the T-shaped base.