The NRT4-U100-CK is the 10kVA flagship of 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, and at 10kVA it delivers a full 10000W thanks to a unity output power factor. Like the other 5kVA and above models, it connects through a terminal block for input and output, so it is hard-wired by a licensed electrician into your distribution board. The CK kit ships with one matching NRT4-B100 battery expansion module for usable standby runtime out of the box.

At 10kVA the Netys RT4 also supports parallel operation of up to three units for N+1 redundancy or additional capacity, and reaches up to 95.6% efficiency in online mode to keep running cost and heat rejection down, which matters at this power level. 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 10kVA

NRT4-U100-CK specifications

The full Netys RT4 range

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. The 1kVA to 3kVA models are plug-in with IEC outlets; the 5kVA and above, including this 10kVA, are terminal-block connected and supplied with a matching battery module.

Runtime, batteries and parallel operation

The NRT4-U100-CK gives around 11 minutes of standard autonomy at 75% load with its supplied NRT4-B100 battery module, per the Socomec datasheet, which is enough to ride through short outages and shut a rack of servers down cleanly, or bridge to a generator. Because the batteries are external, runtime scales cleanly: add further battery modules and the UPS is sized to the actual ride-through target rather than a guess. Runtime falls as load rises, so the number of modules depends on how many watts the load actually draws, which Indigi confirms against a measured or estimated load.

For sites that cannot tolerate a single point of failure, up to three NRT4-U100 units can be paralleled for N+1 redundancy, so one unit can be taken offline for service without dropping the load, or for up to 30kVA of capacity. Monitoring is built in: USB and RS232 MODBUS ports signal connected servers to shut down automatically, a NET VISION SNMP card puts the UPS on the network, and the SoLive app adds cloud visibility, the kind of oversight that supports uptime commitments and audit requirements under frameworks such as APRA CPS 230 for regulated organisations.

Power and cooling planning

At 10kW the heat rejected by the protected IT load becomes a first-order design factor. Almost all of the power the racks draw ends up as heat the room must remove, and a load of this size is well beyond what comfort air conditioning can hold reliably, so it is normally paired with dedicated close-control or precision cooling. As a precision power and cooling specialist, Indigi designs both sides of the room together, sizing the UPS, its battery autonomy and any parallel redundancy alongside the matching cooling so the space stays within the recommended temperature band under full load and during a mains event. See server room cooling for how the cooling side is scoped.

Typical applications

A 10kVA online UPS like the NRT4-U100-CK suits larger single-phase Australian critical loads. Common deployments include:

• Multiple racks of servers, storage and switching in a server room or data room
• Edge compute and small data-centre sites needing redundancy on a single-phase supply
• Medical, imaging and diagnostic suites sensitive to power quality
• Industrial control, automation and process plant on single-phase
• Security, communications and building-services infrastructure

Not sure how much battery runtime your load needs, or whether to parallel two units? Our UPS runtime and battery sizing calculator returns an indicative figure in under a minute, and Indigi can confirm the sizing and redundancy design.

Installation and maintenance

The NRT4-U100-CK connects through a terminal block, so it must be hard-wired into your distribution board by a licensed electrician to AS/NZS 3000. Indigi installs single-phase UPS from $1,250 in the 3 to 10kVA band, and can rack, wire, commission and load-test the unit and its battery module as part of the job. Once 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-U100-CK support?

It is rated at 10000VA and 10000W. Because it has a unity power factor, it supports up to 10000 watts of real load, which suits multiple racks of servers, storage and switching in a server room or data room on a single-phase supply.

Does the NRT4-U100-CK need to be hard-wired?

Yes. The 10kVA connects through a terminal block for input and output, so it must be hard-wired into your distribution board by a licensed electrician to AS/NZS 3000. Indigi provides this installation and commissioning.

Does the kit include a battery module?

Yes. The CK kit ships with one matching NRT4-B100 battery expansion module, giving around 11 minutes of standard autonomy at 75% load. Further modules can be added to extend runtime.

Can I parallel units for redundancy or more capacity?

Yes. The Netys RT4 10kVA supports parallel operation of up to three units, so you can build N+1 redundancy or scale to as much as 30kVA. A parallel port is included.

How efficient is the NRT4-U100-CK?

It reaches up to 95.6% efficiency in online double-conversion mode, which at 10kW meaningfully lowers running cost and the heat rejected into your server room compared with less efficient online UPS.

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-U100-CK supplied, wired 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