The NRT4-U020B is the 2kVA model in Socomec's Netys RT4 family, the brand's latest generation of single-phase online UPS. Its true online double-conversion topology keeps the connected load running continuously on regenerated, voltage and frequency regulated power with zero transfer time when the mains fails, so it suits a rack of servers, a network core or any load that cannot tolerate even a momentary drop. At 2kVA it delivers a full 2000W thanks to a unity output power factor, so the entire nameplate rating is usable watts rather than headroom lost to a 0.8 or 0.9 factor.

It ships ready to rack or stand, with a supplied rail kit, internal batteries and Australian cords. A C19 outlet plus eight IEC C13 outlets (four of them programmable) let you stage shutdown or reboot groups, and USB plus RS232 MODBUS ports with an optional NET VISION SNMP card give you full monitoring and integration. Below is the complete specification, the wider Netys RT4 range for sizing up or down, where it fits, how it compares, and how Indigi supports it.

Why the Netys RT4 leads at 2kVA

NRT4-U020B specifications

The full Netys RT4 range

If 2kVA is not quite the right fit, the Netys RT4 family spans 1kVA to 10kVA on the same online double-conversion platform, so you can size up or down without changing UPS technology. Each model pairs with a matching battery expansion module for longer autonomy.

Runtime, batteries and monitoring

On its internal batteries the NRT4-U020B gives around 16 minutes of standard autonomy at 75% load per the Socomec datasheet, one of the longer internal runtimes in the range, which is ample to ride through short outages and shut connected servers down cleanly. Where a site needs longer autonomy, the matching NRT4-B030 battery expansion module extends runtime, and more than one module can be added so the UPS is sized to the actual ride-through target rather than a guess. Because runtime falls as load rises, the right number of modules depends on how many watts the rack actually draws, not on the UPS nameplate, which is why sizing is best confirmed against a measured or estimated load.

Monitoring is built in. The USB and RS232 MODBUS ports let the UPS signal a connected server to shut down automatically when the battery runs low, and the communication slot accepts a NET VISION SNMP card so the unit appears on the network for remote monitoring, alerting and integration with a building management system. LOCAL VIEW software covers Windows, Linux and macOS, and the SoLive app adds cloud monitoring from a phone, the kind of visibility that supports uptime commitments and audit requirements under frameworks such as APRA CPS 230 for regulated organisations.

Typical applications

A 2kVA online UPS like the NRT4-U020B suits a wide band of Australian critical loads. Common deployments include:

• A small rack of servers, storage and switches in a comms room or wiring closet
• Network core and edge cabinets where zero transfer time protects routing and voice
• Medical, imaging and laboratory equipment sensitive to power quality
• Point-of-sale, security, access-control and CCTV head-ends
• Industrial control cabinets and PLCs on a single-phase supply

Not sure whether 2kVA and the internal battery give you enough ride-through for your load? Our UPS runtime and battery sizing calculator returns an indicative figure in under a minute, and Indigi can confirm the sizing and whether an NRT4-B030 expansion module is worthwhile.

How the NRT4-U020B compares

The Netys RT4 2kVA competes with other 2kVA online rack/tower units such as the APC Smart-UPS SRT. The key practical difference is usable watts: the Netys RT4 delivers a full 2000W at unity power factor, where many competing 2kVA units are rated to a lower wattage.

Installation and maintenance

The NRT4-U020B plugs into a standard single-phase outlet, but rack integration and any hard-wired or switchboard work should be carried out by a licensed electrician to AS/NZS 3000. Indigi installs single-phase UPS from $850 for units up to 3kVA, and can rack, cable, commission and load-test the unit as part of the job. Once it is running, a preventative maintenance visit keeps the batteries healthy and the firmware current: a one-off Socomec service is $720 ex GST, or a standard annual plan is $1,940 per year ex GST covering inspection, battery testing and reporting. See single-phase UPS installation and commissioning and UPS maintenance plans for detail.

Frequently asked questions

What load can the Socomec NRT4-U020B support?

The NRT4-U020B is rated at 2000VA and 2000W. Because it has a unity power factor, it supports up to 2000 watts of real load, which suits a small rack of servers, storage and switching in a comms room or wiring closet.

How long will the NRT4-U020B run on battery?

On its internal batteries it gives around 16 minutes of standard autonomy at 75% load per the Socomec datasheet, one of the longer internal runtimes in the range. Adding an NRT4-B030 battery expansion module extends this further.

Is the NRT4-U020B a rack or a tower UPS?

Both. It is a convertible 2U rack and tower unit and ships with a rail kit, so you can mount it in a standard cabinet or stand it upright as a tower, whichever suits your site.

What warranty does it come with?

The NRT4-U020B carries a 2-year standard UPS warranty that can be extended up to 5 years. A preventative maintenance schedule protects battery life and reliability over its service life.

Can I monitor the UPS over the network?

Yes. USB and RS232 MODBUS ports are standard, and an optional NET VISION SNMP card fits the communication slot so the unit can be monitored over the network, with LOCAL VIEW software and the SoLive app for local and cloud monitoring.

Related products and services

• Browse the full Socomec UPS and Netys RT4 range
• Socomec UPS systems Australia guide
• Single-phase UPS installation and commissioning
• UPS maintenance services and maintenance plans
• UPS runtime and battery sizing calculator
• Compare with Eaton UPS systems

Need the NRT4-U020B supplied, racked and commissioned? Tell us your load and site location and Indigi will quote supply, install and maintenance under one contract. Indigenous and Veteran-owned, Supply Nation and ICN Gateway registered. Contact Indigi Power and Cooling