Product Description
The ST-20 is a classic porcelain pin insulator for overhead distribution lines up to about 22 kV. It screws onto a steel or wooden pin fixed vertically on the pole top or cross-arm, carries the conductor and keeps it insulated from the structure.
High-grade glazed porcelain gives long service life, stable electrical performance in rain and dust and good resistance to UV and temperature changes. Every unit is inspected before delivery.
