Many organisations today depend entirely on their ICT equipment's uninterrupted availability to stay in business. However, while demanding better protection than ever from their UPS systems, users face unprecedented constraints on their budgets as well as environmental pressure to "go green".
Modular UPS topology is becoming the answer for ICT operators facing these pressures and is currently the fastest-growing segment of the three-phase UPS market.

There are primarily three advantages why an organization would benefit from a modular 
UPS system: availability, scalability and efficiency.

The majority of modular three-phase UPS systems currently available are centralised systems. "Centralised" means that components are shared by the individual UPS modules within the system. UPS systems based on Decentralised Parallel Architecture (DPA) do not share any common components. DPA means that each UPS module contains all the hardware and software required for full system operation.