MegaFlex UL – The best in power protection (ABB)

The MegaFlex UL uninterruptible power supply (UPS) is designed for critical high-density computing environments such large enterprises, colocation, hosting cloud and telecommunications data centers.

The MegaFlex UL UPS represents the latest technological innovation in the market delivering the best and most reliable power protection for large infrastructures. The UPS is a three-phase, 480V double conversion uninterruptible power supply. Its topology is monolithic based utilizing 400 kW power modules with power availability from 1,200 to 1,600 kW in one UPS cabinet configuration. MegaFlex UL is flexible system architecture ready and supports N+1, 2N, 2N+1, N+N, 3N/2, and catcher system configurations.

ABB MegaFlex UL UPS is based on ABB’s redundant parallel architecture™ (RPA) allowing the UPS to run in a parallel arrangement, eliminating any single point of failure with true redundancy. RPA reduces operating footprint and provides a scalable paralleling approach that increases system reliability. It also eliminates the need for external paralleling equipment or centralized bypass and master control.

Flexible approach

  • Single module capacity from 1,200 kW to 1,600 kW; core power blocks of 400 kW
  • Redundant parallel architecture with distributed static bypass
  • Multi-module ready offering: N+1, 2N, 2N+1, N+N, 3N/2, and a distributed redundant catcher design
  • Collaborative, customer-centered approach

Optimized efficiency

  • Minimized energy losses, heat dissipation and electricity cost in double conversion, up to 97%
  • High energy efficiency operations in eBoost mode, up to 99%

Reliable operations

  • RPA technology eliminates single points of failure in parallel systems
  • Ease of operation with local and remote real-time monitoring
  • Proven high-power transformerless technology

World-class innovation

  • Proven technology from world-leading R&D experts
  • Power conversion technology for high power density
  • eBoost (VFD) mode for premium efficiency

Simple installation and serviceability

  • Easy front and top service access
  • Modular sub-assemblies facilitate ease of service and lower MTTR
  • Fast consumable replacement -all accessories in one cabinet
  • Remote UPS monitoring
  • Consumable parts design life up to 15 years

Ultimate space and energy savings

  • Market leading maximization of power density
  • Up to 40% footprint savings inside high-density computing rooms
  • 25% reduced energy consumption kWh over the product life span
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General Data

System power rating 1200 kW / 1500 kW / 1600 kW
Core power rating 400 kW
Topology Online double conversion
Parallel system capacity Up to 4 UPS systems via RPA Decentralized Architecture
Static bypass inductor (standard) Up to 25% more flexibility on cable length in case of RPA system
Cable entry Top or bottom
Serviceability Front and top service access
HRG ready Yes
Input connections Single or dual feed
Short circuit withstand rating 100 kAIC
Static bypass 100% rated – continuous duty
Cabinet color RAL 9005 (black)


Nominal input voltage 480 VAC, 3-ph, 4 W + ground or 3 W + ground
Voltage tolerance -15% to +15%
Current distortion THDi <3.0% 100% load normal mode – linear
Frequency range 60 Hz +/-10%
Power factor 0.99


Rated output voltage 480 VAC, ph-ph / 277 VAC ph-N
Voltage tolerance Static  +/-1%
Dynamic (step load 0%-100%-0)   +/-3
Dynamic (step load 0%-50%-0)     +/-2
Voltage distortion THDu <3 @ 100% load, nominal mode – linear
<5 @ 100% load, nominal mode – non-linear
Frequency 60 Hz
Rated power factor 1.0


Double conversion (VFI) Up to 97%
eBoost mode (VFD) Up to 99%


Protection rating IP20
Storage temperature -13 to 131°F / -25 to 55°C
Operating temperature 32 to 104°F /  0 to 40°C
Altitude without de-rating Up to 1,000 m
Altitude with de-rating 1,500 m: -2.5% / 2,500 m: -2.5%
1,500 m: -2.5% / 1,500 m: -2.5%
Acoustic noise at 1 m <80 dBA


User interface System graphical touch screen
Communication ports RS232, SNMP & Modbus
Customer interface Remote shutdown, gen-set interface, external bypass contact


Type Lithium ion, VRLA, VLA, NiCd
Nominal battery bus 480V (240 Cell)


Safety ETL as tested to UL 1778 / EN 62040-1
Manufacturing ISO 9001:2015, ISO 14001:2015, OHSAS18001

Weights, dimensions

1200 kW
8,157 lbs / 3,700 kg
129.92 x 86.61 x 39.37 in / 3,300 x 2,200 x 1,000 mm

1500 kW
9,039 lbs / 4,100 kg
129.92 x 86.61 x 39.37 in / 3,300 x 2,200 x 1,000 mm

1600 kW
9,039 lbs / 4,100 kg
129.92 x 86.61 x 39.37 in / 3,300 x 2,200 x 1,000 mm

 Changes to specifications are reserved and subject to change.


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