Development Path of the A26 Replacement Polymeric Insulator for the West Coast Main Line Project

In 1999, TE’s Raychem team began to work with a railway maintenance company on the development of a polymeric replacement for the A26 porcelain insulator and electrification of the new WCML project, (West Coast Main Line). The interest in polymeric insulators was initiated from the market trend towards the employment of polymeric insulators used by the railway industry worldwide. The reason for this trend is because of the superior mechanical and electrical properties of the polymeric insulator.