We started out in 1964 as Power Development (PD) manufacturing Silicon Carbide (SiC) technology Surge Protection Devices (Transient Voltage Surge Suppressors). However, in 1976 the Surge Arrester world experienced a dramatic shift with the introduction of the first high voltage Metal Oxide Varistor (MOV) Surge Arrester.

This major increase in the protective capability of this technology made the MOV arrester an instant success. We used a combination blend of Zinc Oxide (ZnO) and other metal oxides and manufacturing techniques and became the only UK manufacturer of the MOV and we have been continually improving our technology over the years.

Having designed and manufactured many different solutions over those years for many different applications, we believe that we can help assist you with a product to combat your surge problem.

Our product range is continuously expanding across numerous markets including;

Building and Construction,  Rail and Tram Transport, Data Networks and Telecoms, Ministry of Defence, Renewable Energy, Electrical Power Generation, Electrical Power Distribution, Home and Office, CCTV, Fire and Burglar Alarms

As a leader in the design and manufacturing of Surge Protection Devices (SPD) we can also custom-design solutions to protect your electronics against damage from lightning and transient over-voltages for a specific application.