Trusted World Leaders in Voltage Stabilisation and Power Conditioners

About Us

With over 70 years of continuous manufacturing in the UK, and tens of thousands of products worldwide, it’s easy to see why Watford Control are the world’s leading brand of voltage stabilisers and voltage management systems.

Our electromechanical stabilisers have been in operation for over 60 years and our first solid state stabiliser was patented in 1972, many of which are still in operation today and still sets the benchmark for today’s modern products.

We are also ISO 9001 and ISO 14001 accredited.


Despite the passage of time, the general principle of stabilising AC voltages in factories, hospitals, military installations airports or wherever you may need us, remains largely unchanged and that’s why over the last 70 years, Watford Control are still the #1 brand around the world.

Our continuous improvements in technology and manufacturing processes have enabled us to offer integrated PFC to all our stabilisers (at a significant cost advantage over separate systems) and new Solid State stabilisers up to 4mVA in capacity.

We take the lead when it comes to designing products and we come up with unique solutions to your voltage stabilisation and optimisation needs, many of which are patented to us. Our EM/EMS turbo range, BE solid-state stabilisers and new Powersaver range of voltage optimisers are just a few examples of the power conditioning technology which benefits our customers every day.


Our systems offer surge-free operation and unrivalled reliability. Whether you want the convenience of a ready-made system, IP00 for your own product range or a bespoke device, we’ve got the solution to your national and international power supply requirements.


Our Timeline


Stephen Brod, Chairman and founder of the company introduces a range of precision timers for X-ray and photographic equipment


Introduction of EM range of Servo Mechanical AC Voltage Stabilisers


Move from Kilburn north London to new factory in Watford.


True solid-state, low distortion AC Voltage stabilisers introduced. Still the basis of the very latest ‘solid state’ stabilisers made today


Stabilisers supplied to the CERN project in Genéve.


Major contact awarded to supply over 500 stabilisers for unmanned television transmitters


Company moved to Corby, Northants.


EM range extended by the addition of the EM21 Series, providing 50% more kVA for the same frame and size.


EM21 design technology introduced to entire stabiliser range up to 8000 kVA


Econostab energy saving stabilisers introduced


Powersaver Voltage Optimiser range introduced.


Compact range of single phase PSC Powersavers aimed at the smaller commercial premises such as small retail outlets, offices, medical practitioners and public houses.


Remote Monitoring Ethernet communication module to allow remote monitoring of Voltage, Current, Frequency and Power levels.


Business acquired by Envirovolt and JMS Transformers. Move to new manufacturing centre August 2016.


Watford Control progress to the finalist stage of the Northamptonshire Business Awards for the Exporter of the Year Award

We’re Here To Help
Highly experienced team with over 70 years in the industry.
Mark Massetti


Mark Massetti
Managing Director

Scott Clinton


Scott Clinton
Customer & Technical Services Director

Ed Hudson


Ed Hudson
Sales Director

Whatever your needs or application, our friendly technical sales staff at
Watford Control can help you to get the right product.
Simply fill out our online Fast Track Enquiry Form or call us on +44 (0) 333 210–2–240.

Over 10,000+ Products Shipped Worldwide
Unrivalled Voltage Correction Range of ± 40%
Solid State or Electro Mechanical Operation
Independent 3 Phase Control
Large Range of Models From 1kVA to 4mVA Single or Three Phase
Fully Customisable to Unique Customer Requirements