DiamondPlus® 1100 Series

Three Phase UPS

Lower critical power loads, same high performance

120/208V / 10, 20, 30, 40, 50, 60, 70, and 80 kVA

With the DiamondPlus® 1100 Series of Uninterruptible Power Supplies, Mitsubishi Electric quality and reliability extends out beyond the facility's utility power room. Perfect for server rooms, network closets, and control rooms, Mitsubishi Electric's DiamondPlus® models provide high performance power protection for lower but still critical loads. Hot swappable power modules provide maximum flexibility for expansion as well as rapid maintenance and repair.

It's Time to Rethink your UPS

1100 Series Video

Perfect for server rooms, network closets, and control rooms, Mitsubishi Electric’s 1100 Series UPS models provide high performance power protection in a compact and expandable format.



Modular & Expandable

Both the 1100A (10-50 kVA) and the 1100B (50-80 kVA) have modular designs, allowing for additional power modules to be added at a later date. Each is upgradeable in 10 kVA increments.  

Hot Swappable

The DiamondPlus® 1100's power modules are hot swappable for maximum flexibility and rapid mean time to repair (MTTR).  This means that it is possible to switch out modules without needing to take the UPS offline, which will expedite the process of repairs and reduce your electrician costs. 


  • UL1778 (Underwriter Laboratories) Standard for UPS Equipment
  • CSA 22.2 (Canadian Standards Association - cUL Equipment)
  • IEC (International Electro-technical Commission), Semiconductor Converter Standards
  • FCC Title 47, Part 15, Subpart B
  • IEEE 587, ANSI C62.41 1991 Standard for Surge Withstand Ability
  • ISO 9001 Quality Assurance program
  • UL924 Listed

Other Features

  • True online double conversion
  • Fully-digital IGBT converter and inverter
  • Pulse Width Modulation (PWM) controls
  • Minimal footprint
  • Lightweight
  • Front access
  • Output power factor 0.9
  • Bottom or side cable entry
  • Internal batteries (10 & 20 kVA only)
  • Touchscreen interface
  • UL 924 certified





As UPS systems are often viewed as one of the biggest culprits regarding energy loss in power distribution, it makes sense to consider efficiency, along with reliability, as a primary factor in the selection of a UPS. 

Through its history of technological developments, Mitsubishi Electric has proven to be a leader in advancing efficiencies to unprecedented levels.  Beginning with the use of IGBTs for converters and inverters and 3 level topology and followed by the promotion of transformerless designs, Mitsubishi Electric has long been at the forefront of offering Uninterruptible Power Supplies with the highest efficiencies available coupled with unparalleled reliability.  Mitsubishi Electric's superior expertise in optimizing power device control is evident by the flatness of the resulting curve, demonstrating high efficiency across all load levels.  Please note that all efficiency curves published on this site are for the respective UPS operating in true online double conversion (aka VFI).

DC backup power Solutions


While the UPS is the most critical piece of infrastructure in a data center, the DC power backup storage system that supports the UPS is not far behind. 

We offer various DC power solutions, and provide information on VRLA battery cabinets in the Peripherals section below. 

For a deeper dive into all possible solutions, be sure to review our webpage entitled UPS Batteries and DC Power Storage Solutions or simply click here.


AC Output
Bypass Input
AC Input
DC Input
Qty 8 x 10 kVA Modules