About us

UPS Manufacturer for Critical Infrastructure in the UK

At DEWEN®, we develop and manufacture precision-engineered uninterruptible power supply (UPS) systems and industrial power conversion equipment designed for mission-critical environments. As a British-based manufacturer, we focus on creating robust, tailored solutions that deliver long-term performance, adaptability, and peace of mind.

Our product range includes:

  • Industrial-grade UPS systems
  • Rectifiers and inverters
  • Frequency and power converters

DEWEN systems are trusted in demanding sectors such as water and wastewatertelecommunicationshealthcareenergyoil and gas, and manufacturing. Each solution is engineered for operational resilience and seamless integration into complex environments—whether indoors, outdoors, or in harsh locations.


🔧 Compliance with Global Standards

Every DEWEN system is designed and tested in accordance with recognized international standards, ensuring safety, performance, and environmental protection:

  • BS EN 62040-1 – UPS Safety Requirements
  • BS EN 62040-2 – Electromagnetic Compatibility (EMC)
  • BS EN 62040-3 – UPS Performance Classification
  • BS EN 60529 – Ingress Protection Ratings (e.g., IP54, IP65)

In addition, our quality management system is certified to ISO 9001:2015, supporting continuous improvement and product consistency across all projects.


🌊 UPS Systems for Water and Wastewater Infrastructure

For the water and wastewater sector, DEWEN provides power systems that align with the WIMES 3.07 specification, ensuring compatibility with UK water industry requirements.

These solutions are built to support infrastructure such as:

  • Remote telemetry systems
  • Chemical dosing units
  • Pumping and booster stations
  • MCC and control panels

Our designs prioritize protection, ease of integration, and long-term dependability in both urban and remote environments.


⚙️ Tailored Power Systems for Complex Environments

No two applications are the same. That’s why DEWEN systems are:

  • Individually engineered for each environment and load type
  • Configurable for runtime, cooling, and enclosure protection
  • Compatible with SCADABMS, and industrial automation platforms

From design to deployment, we work closely with your engineering teams to ensure a seamless fit and operational efficiency.


🌱 Built with Sustainability in Mind

At DEWEN, sustainability is not an afterthought—it’s part of our engineering philosophy. Our systems:

  • Minimize energy waste
  • Maximize component lifecycle
  • Support low-maintenance, eco-conscious operation

This helps our clients meet performance goals while aligning with environmental standards and long-term carbon reduction strategies.


🏭 Powered by Engineering Excellence

As part of a legacy of technical innovation through KEMET LIMITED, DEWEN draws on decades of experience in industrial and infrastructure-focused power solutions. Our brand is built on precision, reliability, and an unrelenting commitment to quality at every level.


⚡ Choose DEWEN®

Choose DEWEN for high-integrity, UK-manufactured UPS systems that meet international standards, support sustainability goals, and adapt to the challenges of modern infrastructure.