R Series 1/2/3 kVA

Reliable power supply for small and medium enterprises

Delta’s Amplon R series is an online double-conversion rack-mountable UPS providing consistent sine-wave power to your critical equipment and reliable protection for IT equipment and data centers. The R series offers an output power factor of 0.9 and a best-in-class AC-AC efficiency of up to 93% for greater energy savings. The Amplon R series leads the industry in combining compact size, availability, flexibility, and low total cost of ownership.


Delta R series 1/2/3 kVA UPS - applications

Delta R 1/2/3 kVA UPS - LCD panel

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  • True online double-conversion topology provides zero transfer time to ensure maximum protection of the equipment
  • Watch-dog design of the DSP (Digital Signal Processor) increases reliability
  • Cold-start capability provides temporary battery power when the utility power is out
  • Operating temperature tolerance up to 50°C ensures critical loads’ continuity
  • The Maintenance Bypass Box offers load continuity during battery replacement or other upgrades


  • Compact dimensions meet the needs of different rack cabinets
  • Convertible rack and tower configuration in 2U size cabinet
  • Excellent local communications through rotatable LCD display
  • Intelligent management software connectivity via RS232, mini slot or USB port

Low Total Cost of Ownership

  • Wide input voltage range reduces the chance of using the battery and extends battery life
  • Intelligent battery management sustains battery life and performance
  • High output power factor of 0.9 provides more real power to critical loads
  • High input power factor (pf > 0.99) and low harmonic distortion (iTHD < 3%) save upstream investment
  • Up to 93% AC-AC efficiency and 96% efficiency in ECO mode results in marked energy cost savings
  • Fan speed control by load level and room temperature optimizes performance

Technical Specifications

Model R-1K / R-2K / R-3K
Power Rating [1K]: 1kVA/0.9kW
[2K]: 2kVA/1.8kW
[3K]: 3kVA/2.7kW
Nominal Voltage 200*/208*/220/230/240 Vac
Voltage Range 175 ~ 280 Vac (full load)
80 ~ 175 Vac (50% ~ 100% load)
Frequency 50/60 Hz ± 10 Hz
Power Factor > 0.99 (full load)
Current Harmonic Distortion < 3%
Power Factor 0.9
Nominal Voltage 200*/208*/220/230/240 Vac
Voltage Regulation ± 1% (linear load)
Frequency 50/60 Hz ± 0.05 Hz
Voltage Harmonic Distortion < 3% (linear load)
Overload Capability < 105%: continuous
105 ~ 125%: 1 minute
125 ~ 150%: 30 seconds
Receptacle [1K]: IEC C13 x 4
[2K]: IEC C13 x 6, IEC C19 x 1
[3K]: IEC C13 x 6, Terminal (EMEA model)
[3K]: IEC C13 x 6, IEC C19 x 1 (SEA model)
AC-AC [1K]: 91%
[2K/3K]: Up to 93%
ECO Mode [1K]: 95%
[2K/3K]: Up to 96%
Battery Voltage [1K]: 24 Vdc
[2K]: 48 Vdc
[3K]: 72 Vdc
Charge Current 4A (up to 8A with optional inbuilt charger)
Audible Noise [1K]: < 40 dB
[2K/3K]: < 43 dB
Display LCD display and LED indicators
Communication Interfaces
Standard Mini Slot x 1, RS-232 Port x 1, USB Port x 1
Safety CE
Dimensions (WxDxH) [1K]: 440 x 335 x 88 mm
[2K]: 440 x 430 x 88 mm
[3K]: 440 x 430 x 88 mm
Weight [1K]: 5.3 kg
[2K]: 9.0 kg
[3K]: 9.1 kg
Operating Temperature 0 ~ 50°C***
Relative Humidity 5 ~ 95% (non-condensing)


Rear Views

EMEA, SEA, India

Amplon R 1/2/3 kVA - rear views for EMEA, SEA, IndiaSouth America

Amplon R 1/2/3 kVA UPS rear views for South AmericaSouth Korea

Amplon R 1/2/3 kVA UPS rear views for South KoreaChina

Amplon R 1/2/3 kVA UPS rear views for China