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An (UPS) is an electrical apparatus composed of an inverter, rectifier and transformer that provides emergency power to a load when the input power source fails to provide power electrical systems, such as mains power. 

uninterruptible power supply

This is achieved by through interconversion of AC & DC power source from accompanied batteries, resulting in a clean power source preventing interruptions in power in the event of a loss of power and protecting against electrical damage to sensitive equipment from power sags and surges. Energy systems are liable to power outages/interruptions at any point and thus a UPS is characteristically used to protect electrical equipment where unexpected power disruption could cause severe data loss, business disruption or service failure and maintain safe and proper functionality of critical equipment.

UPSs can be divided into two categories:


  • Single-phase systems refer to the use of a single input source and a single output source (1:1) to electrical equipment, examples of which would include the supply of power from 230/240VAc three-pin UK sockets. Single-phase supplies are used to operate small power hardware such as rack-mounted servers, telecoms, network switches, computer systems or any device running from a standard three-pin UK plug.
  • A single-phase UPS is used to sites/businesses where power requirements are less than 20kVA. They are usually a practical and cost-effective solution to applications with low kVA requirements such as small businesses, homes and satellite offices.”


  • Three-phase systems refer to the use of all three phases which are generated from the National Grid. A three-phase electrical system refers to an electrical supply comprised of three individual sine waves installed as a three-wire configuration (or three-wire with a neutral) as input sources to the electrical equipment. The output tends to be three-phase (3:3) but can also be singular (3:1).
  • A three-phase UPS is used for applications with high kVA requirements due to their ability to distribute large quantities of power over a larger area/distance. Their uses are for sites such as data centres, large buildings, industrial facilities and medical or transport-affiliated services.

We supply a diverse range UPS catered for your individual, unique needs; such as for small businesses, large networks, data centres, transport networks and many more. These UPS can vary from power requirements and can range from:

  • Modular UPS
  • Rack-mounted UPS
  • Tower UPS
  • Extended Runtime UPS
  • High Efficiency ECO UPS

We also supply UPS batteries and battery services and UPS parts for UPS repair and refurbishment. These include (but are not limited to):

  • Inverters
  • Rectifiers
  • Transformers
  • Chargers
  • AC & DC Capacitors
  • UPS Fans

Paul Anton Ltd strives to provide top quality, safe power solutions tailored to suit all your power protection needs. To do this, we supply a diverse range of UPSs, from all ranges of kVA requirements and all modes of systems – be it single-conversion, double-conversion or multi-modal systems; and will endeavour to ensure your power is uninterrupted and protected.

Paul Anton Power Solutions
5 Finch Drive, Springwood Industrial Estate, Braintree, Essex, CM7 2SF