P&B’s heritage goes back to 1932. The company is regarded as one of the pioneers of the motor protection relay. We manufacture entirely at Manchester a range of motor, feeder and generator protection relays for the protection and control of industrial switchgear. End clients are often power-generating stations, oil and gas operators, petrochemical refineries, or industrial complexes and process plants.

Due to the nature of the industry we serve and our long history, we have been supplying to several countries around the world as well as within the UK. Normally the historic commonwealth countries are our larger markets, although we have large quantities of our relays installed in the far-east and middle-east, notably in Korea,…

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