The linear pin-type polymer insulator type TF 20P is designed for the insulation and support of conductors in overhead power lines, communication lines, and radio broadcasting networks with voltages up to 0.4 kV and frequencies up to 100 Hz, operating in ambient temperatures ranging from -60 °C to +50 °C.

The climatic version and placement category comply with UHL 1 according to GOST 15150. The insulator is manufactured according to TU 3494-039-51165501-2006. Installation is performed on standard pins using caps of types K-5 and KP-18.