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The Gold's relay is regarded by many as probably the finest Electro-mechanical Motor protection relay ever made

 

Golds' Relay Mn5A, designed 1944
PBSI Ltd
PBSI Ltd was formed in 1987 to acquire the businesses of P&B Engineering Company Limited and W.M. Shakeshaft Limited. The former was incorporated in 1932, the latter in 1951. P&B Weir Electrical was acquired in 1992.

The Group now has two factory bases at Manchester and Corsham. The Head office and administration is at Manchester.

The main activities are the design and manufacture of electrical and electronic equipment, used mainly within the industrial sector.

Principal product lines are Medium Voltage Switchgear and Retrofits, Protection Relays and Controllers, Portable Earthing Equipment, Buchholz Relays, Maximum Demand Indicators and other instruments.

Customers include Power Stations, Regional Electrical Companies, Oil and Petrochemical Complexes, Offshore Oil & Gas Platforms and Terminals, Wind Generation and co-generation schemes, Railway Maintenance, Water Industry, Shipping and Support Vessels and Cement Plants.

Our services include Test and Commissioning of Switchgear, Grading Studies and Protection Training Seminars.