Line pin-type polymer insulators are designed for insulating and securing conductors, including insulated ones, on overhead power lines (OPL) and in distribution devices of power plants and substations for alternating current with voltages of 10–20 kV and frequencies up to 100 Hz. They are effective at ambient air temperatures ranging from -60°C to +50°C and correspond to climatic design UHL, placement category 1 according to GOST 15150.

The insulator's construction includes a fiberglass rod providing mechanical strength and a protective sheath made of silicone rubber, which shields the rod from atmospheric effects and increases the leakage path length. Metal end fittings ensure the connection of the insulator with conductors and OPL support elements.

Insulators are classified by the following parameters:

• Design type: pin-type line (ШП).
• Protective coating material: silicone rubber (К).
• Nominal voltage: 10 or 20 kV.
• Pollution level: from 1 to 4 according to PUE, 7th edition, ch. 1.9, STO 56947007-29.240.068-2011.
• Climatic design: UHL, placement category 1.

Example of designation: ШП 10-4 УХЛ1, where:

• ШП — pin-type polymer insulator.
• 10 — nominal voltage in kV.
• 4 — pollution level.
• УХЛ1 — climatic design UHL, placement category 1.

Insulators are produced in various modifications, including options with a groove for conductor stringing, and are equipped with a bushing for fixing the conductor in the groove and a polyethylene cap.