Riello UPS NextEnergy NXE 300kVA

Product Description

The NextEnergy NXE 300 from Specialist Power Systems is a three-phase UPS utilising the latest double conversion online technology which protects against blackouts along with the power fluctuations generated by non-linear loads.

Delivering unity power factor and capable of operating efficiency up to 97%, this tower-style uninterruptible power supply combines high performance with low running costs. Its Efficiency Control System optimises efficiency depending on the power absorbed by the load to ensure prime performance even with partial loads.

Easy to install with top and bottom cable entry as standard, front to top ventilation – which eliminates rear clearance, enabling back-to-back install – and complete front access for all maintenance and servicing, up to eight NXEs can operate in parallel to increase capacity or build-in redundancy. 

The NextEnergy NXE does not require a neutral connection, which potentially reduces the cost of the power distribution system. Hot System Expansion (HSE) functionality makes it easy to add extra UPS into an existing system without the need to either switch units off or transfer to bypass.

Select from various UPS operating modes to improve energy efficiency and enhance performance:

  • Online Mode: maximum load protection and output voltage quality
  • Eco Mode: maximum efficiency up to 98% as the load is powered by the mains only
  • Smart Active Mode: UPS automatically decides what mode to run depending on the stability of the incoming supply
  • Standby Off Mode: for loads such as emergency lighting, which don’t need power until the mains supply fails
  • Frequency Converter Mode: enables the output frequency to be different to the UPS input frequency

In addition, the NextEnergy introduces a new mode of operation called Active Eco that guarantees lower energy consumption while avoiding the need for any power factor correction. It enables the load to be fed from at very high efficiency from the bypass line, but at the same time also working as an active filter to reduce the current harmonics produced by the users, increasing the power factor towards the entrance network. 

Specially designed, superior components can perform at high temperatures up to 40oC, with the UPS design incorporating forced ventilation that effectively extracts heat generated by internal components. 

The NextEnergy range employ the latest battery management features to prolong life and enhance reliability, while its 7-inch interactive touchscreen display clearly shows voltage, UPS status, battery levels, and other key measurements.

Fully compatible with the complete range of Riello UPS communications software, including the advanced PowerShield3 system which allows for the safe shutdown and monitoring of every connected device.

The entire NextEnergy family qualifies for the Energy Technology List (ETL), a government-supported scheme promoting ‘best in class’ energy efficient products. 

Specialist Power Systems are an approved sales partner to Riello UPS in the UK with expert technical knowledge. Call us on 01234 851155 to discuss your requirements and how we can help you find the right product and support.

Product Specification

Part No

NXE 300

Capacity (VA / kVA)

300 kVA

Maximum Output (Watts)

300000 Watts

Form Factor




Run Time


Warranty Length

3 Years

Battery Type

VRLA AGM / GEL, NiCd, Supercaps, Li-ion, Flywheels









3 years

Optional Accessories

Here at Specialist Power Systems we offer a wide range of manufacturer specific accessories from a UPS Network Card through to an External Maintenance Bypass Switch. Please get in touch so we can ensure you get exactly what you need to stay protected.

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For more information, please call us on +44 (0) 1234 851155 or send us a message below.

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