APC Smart-UPS SRT UPS Systems

APC Smart-UPS SRT: the online double-conversion line for critical loads

The APC Smart-UPS SRT series is APC by Schneider Electric's premium online double-conversion UPS family. Unlike line-interactive models that switch to battery only when utility power fails, an online double-conversion UPS continuously rebuilds a clean pure sine wave output from rectified DC, regulated against sags, surges, frequency drift and noise. That makes the SRT line the right choice for servers, network closets, storage arrays, medical and lab equipment, and any load that cannot tolerate even a momentary transfer.

Within the APC lineup, SRT sits above the line-interactive Smart-UPS (SMT/SMX) and Back-UPS consumer tiers. It is built for IT and facilities buyers who need true online protection, hot-swappable batteries, scalable external runtime, and a network management slot for remote monitoring. The units in this collection range from 1000VA / 900W up to 10000VA / 10000W, in tower, convertible and rackmount (2U, 3U, 4U and 6U) chassis, with 120V, 208V and 230V output options to suit North American and international power.

Models in the SRT series

A representative selection from the range below. The full lineup includes 120V, 208V and 230V variants, IEC and L6-30 outlet configurations, and bundles with integrated step-down transformers: see the full range below.

Runtime figures are at the rated internal-battery configuration; all SRT units are extended-runtime capable with external battery packs. "Not listed" means the figure is not published for that model.

How to choose

• Size by watts, not just VA. Add up the real power draw (watts) of everything you will plug in, then add 20 to 25% headroom. Across the SRT line the watt rating runs close to the VA rating (power factor 0.9 to 1.0), so a 3000VA / 2700W unit safely supports roughly 2700W of load. Don't undersize against the VA number alone.
• Plan your runtime. Internal batteries give a few minutes: enough for a clean shutdown or a generator to start. If you need to ride through longer outages, every SRT model accepts external battery packs (extended-runtime capable), so choose a model whose battery family scales to the minutes you require.
• Topology. The entire SRT series is online double-conversion: the protection tier above line-interactive. If your equipment is sensitive to transfer time or dirty power, this is the line you want.
• Rack vs tower. Most SRT models ship in a convertible chassis that mounts in a rack (2U to 6U) or stands as a tower. Match the form factor and output voltage (120V / 208V / 230V) to your environment; 208V and step-down-transformer bundles are available for higher-density deployments.

Why the SRT series

• True online double-conversion with pure sine wave output: continuous regeneration of the output.
• Hot-swappable batteries and scalable external runtime across the range.
• Network-management options for remote monitoring and graceful shutdown.
• Wide capacity and voltage coverage: 1000VA to 10000VA, 120/208/230V, rack or tower.

Warranty, Canadian shipping & support

SRT units carry APC's standard manufacturer warranty: APC's data sheets give 3 years on the UPS and 2 years on the battery; confirm the term on each product page. Every unit in this collection ships from Canada.

Already own an SRT and just need cells? See our APC UPS replacement battery collection for compatible RBC replacement cartridges, and browse the full APC by Schneider Electric range for related models and accessories.

Frequently asked questions

What does "online double-conversion" mean, and why does the SRT use it?
The UPS continuously converts incoming AC to DC and back to a clean AC sine wave, so your equipment always runs on conditioned power with zero transfer time when utility power fails. It's the highest protection tier and the reason SRT is chosen for servers and other sensitive loads.

How do I size an SRT for my equipment?
Total the wattage of your connected gear and add 20 to 25% headroom, then pick a model whose watt rating meets or exceeds that figure. Because SRT watt and VA ratings are close, the VA number alone is a reasonable first cut, but always confirm against watts.

Can I get more runtime than the internal battery provides?
Yes. Every SRT model is extended-runtime capable and accepts external battery packs, letting you scale from a few minutes to much longer hold-up times.

Do these mount in a rack or sit on the floor?
Most SRT models use a convertible chassis that racks at 2U to 6U or stands as a tower, so you can deploy the same unit either way. Check the form factor on each product page.

Are these units new?
Yes: new APC units, unless the listing says refurbished, shipped from Canada with Canadian support.

UPSPLUSBATTERY is a Canadian supplier of APC by Schneider Electric UPS systems. Model names and trademarks belong to their respective owners.