Delta Online RT 3kVA Rack/Tower UPS


Delta · UPS · Online double-conversion
True online double-conversion UPS in a 2U rack/tower form factor — zero transfer time and 0.9 output power factor for servers and network equipment.
- Capacity: 3 kVA / 2.7 kW
- Outlets: 4 × IEC C13 + 1 × IEC C19
- Backup time: 3.5 min @ 100% · 6.9 min @ 70% load
- Online double-conversion, zero transfer time
- Output power factor 0.9 · input PF ≥ 0.99
- Wide input range 120–300 Vac (load-dependent)
Supplied in Israel by Somet Integration — local stock, installation, battery replacement and service from our lab in Lod.
Delta Online RT 3kVA Rack/Tower UPS
The Delta Amplon RT series (Gen3) is a true online double-conversion UPS that provides clean, continuously regulated power with zero transfer time to battery. Its convertible 2U rack/tower design fits 19″ racks or stands upright, and the rotatable LCD adapts to either orientation. With an output power factor of 0.9, high efficiency and optional SNMP, Modbus and relay cards, it is ideal for servers, storage, network and telecom equipment.
Key features
- Online double-conversion, zero transfer time
- Output power factor 0.9 · input PF ≥ 0.99
- Wide input range 120–300 Vac (load-dependent)
- ECO mode for higher efficiency
- Convertible 2U rack/tower with rotatable LCD
- USB, RS-232 and Mini Slot (SNMP IPv6, Modbus, Relay I/O cards)
- Internal hot-swappable VRLA batteries
- Operating up to 50°C (derated above 40°C)
| Model | RT-3K |
| Capacity | 3 kVA / 2.7 kW |
| Outlets | 4 × IEC C13 + 1 × IEC C19 |
| Efficiency | ECO 95% |
| Battery | 72 Vdc, 6 × VRLA |
| Backup time | 3.5 min @ 100% · 6.9 min @ 70% load |
| Dimensions (W×D×H) | 438 × 630 × 86 mm (2U) |
| Net weight | 26.6 kg |
| Topology | Online double-conversion |
| Input voltage range | 180–280 Vac (100% load); 120–300 Vac (50–100% load) |
| Input frequency | 40–70 Hz |
| Input power factor | ≥ 0.99 (100% load) |
| Output voltage | 208/220/230/240 Vac, 1P2W+PE |
| Output regulation | ±1% |
| Output THDv | < 3% (linear load) |
| Output power factor | 0.9 |
| Crest factor | 3:1 |
| Overload | 105–110%: 10 min · 110–130%: 30 s · 130–150%: 3 s |
| Transfer time | Zero to battery mode |
| Recharge | 4 hours to 90% |
| Display | Rotatable LCD with LED indicators |
| Communication | USB, RS-232, Mini Slot (optional SNMP IPv6 / Modbus / Relay I/O) |
| Form factor | Rack/tower convertible, 2U |
| Operating temperature | 0–50°C (40–50°C derated to 70% load) |
| Audible noise | ≤ 50 dBA |
Specifications per manufacturer data and may change without notice. Contact us to confirm configuration and battery runtime for your load.
- Servers and storage in 19″ racks
- Network and telecom equipment
- Branch offices and edge computing
- Medical, lab and industrial control equipment
Buy online: this model is available in our online store — view on SometShop.
Projects & quantities: for project pricing, sizing (load and runtime calculation), installation and maintenance contracts, request a quote or call 1-700-700-193.
Service: Somet Integration provides UPS installation, preventive maintenance and battery replacement at our lab in Lod and on site.
Request a quote
Get local pricing, availability, sizing and installation for the Delta Online RT 3kVA Rack/Tower UPS from Somet Integration.
Prefer to talk? Call 1-700-700-193, email somet@sometltd.com or message us on WhatsApp.









