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Riello Sentinel Rack SER ER 3000VA Online 2U Rack Extended Runtime UPS

SKU: SER 3000 ER
Prices from £1,156.00 including VAT or £1,387.20 ex. VAT
Prices from £1,387.20 inc. VAT
Prices from £1,156.00 ex. VAT

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The Riello Sentinel SER 3000VA/27000W is a compact 2U high double-conversion online uninterruptible power supply with a built-in automatic bypass for rack mount installation. The UPS has a short depth of 380mm and requires at least one external battery extension pack (see table below). The SER ER model has a high capacity charger and can be installed with several battery extension packs to provide runtimes up to several hours.

The Sentinel SER has three operating modes including Online, Eco mode (up to 98% energy efficient) and Smart Active where the UPS automatically selects the best operating mode dependent upon the mains power supply quality. The UPS has a 0.9 output power factor and a wide input voltage range to reduce battery usage.

The front panel backlit LCD display provides operating status information including load and battery levels, and alarm information.

Riello Sentinel SER 3kVA UPS Features

  • Rack mount installation
  • Built-in automatic battery testing enhances reliability
  • Up to 98% operational efficiency in Eco mode to reduce energy waste
  • When the load is switched off, it automatically goes into bypass and battery charge mode
  • Low noise level (less than 40dBA)
  • Output voltage can be selected via software (220/230/240Vac)
  • Use as a frequency converter 50/60 or 60/50Hz
  • Auto-restart when mains power is restored (programmable via software)
  • Backlit LCD display shows UPS status, load, and battery level
  • Built-in automatic battery testing
  • Easy to maintain with hot-swappable batteries
  • Compatible with PowerShield3 supervision and shutdown software for Windows operating systems 11, 10, 8, Server 2022, 2019, 2016 and previous versions, Windows Server Virtualization Hyper-V, macOS, Linux, Citrix XenServer and other Unix operating systems

Riello SER 3000 Runtimes

Runtime Qty External Battery Extension Pack(s)
3m 1 BTC SER 72V BB A5
11m 2
19m 3
29m 4
42m 5


  • Servers and storage systems
  • VoIP telephony equipment
  • Computer networks
  • Medical systems
  • Automation and Industrial process systems

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