RM11E Online Rack/Tower UPS 1–10 kVA
True online double-conversion rack/tower UPS for servers, network switches, telecom, edge IT and critical single-phase loads. RM11E provides pure sine-wave output, 0 ms transfer in online mode, wide input voltage range by model, ECO mode, communication options and hot-swappable battery design on selected models. CE, EMC, LVD and IEC 62040 standards are available by series.
Engineered for Reliability
Online double-conversion topology, rack/tower flexibility, hot-swappable battery options and parallel-capable models for server rooms, telecom shelters and edge IT environments.
True Online Double-Conversion
VFI topology with DSP digital control, 0 ms transfer time and pure sine-wave output protects servers, network switches and edge IT loads from voltage sags, brownouts and blackouts.
Rack/Tower Convertible Design
Compact 2U chassis on 1-3 kVA models, with larger rack/tower chassis on 6-10 kVA models. Rotatable LCD supports rack or tower installation with clear front-facing operation.
Up to 94% Efficiency
Online-mode efficiency reaches up to 92% on 1-3 kVA models and up to 94% on 6-10 kVA models. ECO mode reaches up to 98% in stable utility conditions to reduce operating cost.
Hot-Swap Battery Options
Internal hot-swappable battery design on 1-3 kVA models supports battery service according to procedure. 6-10 kVA models extend runtime using external RC-series battery cabinets.
Parallel-Capable Models
Parallel-capable 6-10 kVA models support up to 4 units for capacity scaling or N+X redundancy, subject to model configuration and project design.
Scalable Battery Runtime
Internal 12V VRLA batteries are used on 1-3 kVA models. RC-series external battery cabinets extend runtime by model and configuration, sized according to load and backup-time target.
Expand Your System
Optional accessories for runtime extension, remote monitoring, rack installation and maintenance bypass support – available by model.
External Battery Cabinets
RC-series rack battery cabinets extend runtime for RM11E models by capacity group: RC04024E to RC08096E for 1-3 kVA, and RC20120N for 6-10 kVA.
SNMP Network Card
Optional TM220 intelligent-slot card for remote monitoring via SNMP, web interface and email alerts. Supports RM11E 1-10 kVA models.
Rack Rail Kit
Adjustable 19″ rack-mount rails, 700-760 mm depth, for secure RM11E installation in standard server racks.
Maintenance Bypass PDU
External maintenance bypass PDU for servicing or replacing the UPS while maintaining load supply, when installed according to procedure. RM11E-PDU1100E for 1-3 kVA; RM11E-PDU9300E for 6-10 kVA.
Technical Details
Complete specifications for the RM11E 1–10 kVA series.
1–3 kVA Models
| Specification | 1 kVA | 2 kVA | 3 kVA |
|---|---|---|---|
| Full Name | RM11E Rack/Tower Online UPS | ||
| Topology | Online Double-Conversion (VFI) | ||
| Phase | 1Ph–1Ph (Single Phase In / Single Phase Out) | ||
| Form Factor | 1U Rack / Tower Convertible | 2U Rack / Tower Convertible | |
| Capacity | 1000 VA / 900 W | 2000 VA / 1800 W | 3000 VA / 2700 W |
| Output Power Factor | 0.9 | ||
| Operating Modes | Online, ECO, Bypass, Battery | ||
| Standards | IEC/EN 62040-1, IEC/EN 62477-1, IEC/EN 62040-2 | ||
6–10 kVA Models
| Specification | 6 kVA | 10 kVA |
|---|---|---|
| Full Name | RM11E Rack/Tower Online UPS | |
| Topology | Online Double-Conversion (VFI) | |
| Phase | 1Ph–1Ph (Single Phase In / Single Phase Out) | |
| Form Factor | 2U Rack / Tower Convertible | |
| Capacity (PF 0.9) | 6000 VA / 5400 W | 10000 VA / 9000 W |
| Capacity (PF 1.0 model) | 6000 VA / 6000 W | 10000 VA / 10000 W |
| Output Power Factor | 0.9 standard (PF 1.0 available in RM11E Elite 6-10 kVA series) | |
| Operating Modes | Online, ECO, Bypass, Battery | |
| Parallel | Up to 4 units (optional parallel card) | |
| Standards | IEC/EN 62040-1, IEC/EN 62477-1, IEC/EN 62040-2 | |
1–3 kVA Models
| Specification | 1 kVA | 2 kVA | 3 kVA |
|---|---|---|---|
| Input Voltage Range | 110–300 Vac (full load: 176–264 Vac) | ||
| Input Power Factor | ≥ 0.99 | ||
| Input Frequency | 40–70 Hz, auto-sensing | ||
| Output Voltage | 208 / 220 / 230 / 240 Vac selectable, ±1% regulation | ||
| Output Power Factor | 0.9 | ||
| Output Frequency | ±0.5 Hz (inverter); tracks mains in bypass | ||
| Output Waveform | Pure Sine Wave | ||
| THDv (output) | ≤ 3% linear load / ≤ 5% non-linear load | ||
| Transfer Time | 0 ms (AC → Battery); 4 ms typical (Inverter → Bypass) | ||
| Crest Factor | 3:1 | ||
| Efficiency (Online / AC Mode) | 90.9% | 92% | 92.3% |
| Efficiency (ECO Mode) | Up to 96% | ||
6–10 kVA Models
| Specification | 6 kVA | 10 kVA |
|---|---|---|
| Input Voltage Range | 110–286 Vac | |
| Input Power Factor | ≥ 0.99 | |
| Input Frequency | 40–70 Hz, auto-sensing | |
| Input THDi | ≤ 3% (100% linear, input THDv ≤ 1%) / ≤ 5% (100% non-linear) | |
| Output Voltage | 208 / 220 / 230 / 240 Vac selectable, ±2% regulation | |
| Output Power Factor | 0.9 standard (PF 1.0 available in RM11E Elite 6-10 kVA series) | |
| Output Waveform | Pure Sine Wave | |
| THDv (output) | ≤ 2% linear load / ≤ 5% non-linear load | |
| Transfer Time | 0 ms (AC → Battery); 0 ms (Inverter → Bypass) | |
| Crest Factor | 3:1 | |
| Efficiency (Online / AC Mode) | Up to 94% | |
| Efficiency (ECO Mode) | Up to 98% | |
| Bypass Breaker | 40 A | 63 A |
| Bypass Load Limit | > 95% load: unit stays on bypass; cannot return to inverter-fed mode until load is reduced | |
1–3 kVA Battery
| Specification | 1 kVA | 2 kVA | 3 kVA |
|---|---|---|---|
| Battery Type | 12V 9Ah VRLA (ATN1209 replacement) | ||
| Chemistry | Sealed Lead-Acid, Maintenance-Free | ||
| Battery Configuration | 2 pcs (24 Vdc) or 3 pcs (36 Vdc) | 4 pcs (48 Vdc) or 6 pcs (72 Vdc) | 6 pcs (72 Vdc) or 8 pcs (96 Vdc) |
| Model Suffix Variants | xX9 (batteries pre-installed) / S (empty battery compartment) / L (no internal battery, requires external RC cabinet) | ||
| Charging Current | xX9 / S models: 1.4 A | L models: 6 A | ||
| Battery Life | 3–5 years at 25°C (typical VRLA design life) | ||
| Hot-Swap Support | Available on xX9 / S models (with internal battery compartment) | ||
6–10 kVA Battery
| Specification | 6 kVA | 10 kVA |
|---|---|---|
| Battery Type | 12V 9Ah VRLA (ATN1209 replacement) | |
| Chemistry | Sealed Lead-Acid, Maintenance-Free | |
| DC Bus Voltage | ±96 / ±108 / ±120 Vdc, settable via LCD (16 / 18 / 20 blocks of 12V 9Ah) | |
| Internal Battery | None – L-suffix only. Requires external RC20120N cabinet (20 batteries shipped) | |
| Recharge Time | 6–8 hours to 90% (per cabinet) | |
| Max Charging Current | 10 A, adjustable via LCD | |
| Battery Life | 3–5 years at 25°C (typical VRLA design life) | |
Compatible Battery Cabinets
1–3 kVA – RC Series (Rack Cabinets)
| Model | Capacity | Voltage | Dims (W×D×H) | Weight | For |
|---|---|---|---|---|---|
| RC04024E | 4 × 9 Ah | 24 Vdc | 440 × 430 × 86.5 mm | 17.4 kg | 1 kVA 24V models |
| RC06036E | 6 × 9 Ah | 36 Vdc | 440 × 430 × 86.5 mm | 22.5 kg | 1 kVA 36V models |
| RC08048E | 8 × 9 Ah | 48 Vdc | 440 × 550 × 86.5 mm | 31.5 kg | 2 kVA 48V models |
| RC12072E | 12 × 9 Ah | 72 Vdc | 440 × 710 × 86.5 mm | 44 kg | 2–3 kVA 72V models |
| RC08096E | 8 × 9 Ah | 96 Vdc | 440 × 550 × 86.5 mm | 31.5 kg | 3 kVA 96V models |
6–10 kVA – RC20120N (Rack Cabinet)
| Model | Type | Capacity | Voltage | Dims (W×D×H) | Weight |
|---|---|---|---|---|---|
| RC20120N | 3U Rack | 20 × 9 Ah (2 banks of 10 in series) | ±120 Vdc | 440 × 680 × 131 mm | 63 kg |
1–3 kVA Models
| Specification | 1 kVA | 2 kVA | 3 kVA |
|---|---|---|---|
| Form Factor | 1U Rack / Tower Convertible | 2U Rack / Tower Convertible | |
| Dimensions (W×D×H) – xX9 model | 438 × 410 × 44 mm (24V) / 438 × 560 × 44 mm (36V) | 438 × 560 × 88 mm (48V) / 438 × 610 × 88 mm (72V) | 438 × 610 × 88 mm |
| Weight – xX9 model (with batteries) | 9 kg (24V) / 12.5 kg (36V) | 21 kg (48V) / 26.5 kg (72V) | 28.5 kg (72V) |
| Weight – S / L model (no batteries) | 4 kg (24V) / 6 kg (36V) | 9 kg (48V) / 10 kg (72V) | 10 kg |
| Noise | < 50 dB at 1 m | ||
| Colour | Black | ||
6–10 kVA Models
| Specification | 6 kVA | 10 kVA |
|---|---|---|
| Form Factor | 2U Rack / Tower Convertible (rotatable LCD panel) | |
| Dimensions (W×D×H) | 443 × 620 × 86.5 mm | |
| Weight (head unit, no batteries) | 16 kg | 18 kg |
| Noise | < 55 dB at 1 m | < 58 dB at 1 m |
| Rack Rail Kit Depth | Adjustable 700–760 mm (fits standard 19″ racks up to 760 mm deep) | |
| Colour | Black | |
1–3 kVA Communication
| Interface | Details |
|---|---|
| USB | Type-B USB port for monitoring software |
| RS-232 (DB9) | 2400 bps, 8N1; cannot be used simultaneously with USB |
| Intelligent Slot | Optional SNMP / relay card support by model |
| RJ45 Surge | Network / telephone line surge protection pass-through by model |
| EPO | Emergency Power Off connector |
| Optional Accessories | Relay card, SNMP card, maintenance bypass PDU by model |
6–10 kVA Communication
| Interface | Details |
|---|---|
| USB | Type-B USB port for monitoring software |
| RS-232 (DB9) | 2400 bps, 8N1; cannot be used simultaneously with USB |
| Intelligent Slot | Optional SNMP / relay card support by model |
| EPO | Emergency Power Off connector |
| Parallel Ports | Parallel communication ports; optional parallel card required |
| PDU Port | For compatible maintenance bypass PDU by model |
| Optional Accessories | Parallel card, relay card, SNMP card, maintenance bypass PDU, rack rail kit |
1–3 kVA – Overload Capacity (Line Mode, ambient < 35°C)
| Load Level | Duration | Action |
|---|---|---|
| ≤ 110% | 60 minutes | Sustained |
| ≤ 125% | 10 minutes | Transfer to bypass |
| ≤ 150% | 1 minute | Transfer to bypass |
| > 150% | Immediate | Transfer to bypass |
6–10 kVA – Overload Capacity (PF 0.9 Model, Line Mode)
| Load Level | Duration | Action |
|---|---|---|
| ≤ 110% | 60 minutes | Sustained |
| ≤ 125% | 10 minutes | Transfer to bypass |
| ≤ 150% | 1 minute | Transfer to bypass |
| > 150% | Immediate | Transfer to bypass |
6–10 kVA Elite / PF 1.0 Models – Overload Capacity (Line Mode – tighter thresholds; load in watts = VA)
| Load Level | Duration | Action |
|---|---|---|
| 105–110% | 10 minutes | Transfer to bypass |
| 110–130% | 1 minute | Transfer to bypass |
| > 130% | Immediate | Transfer to bypass |
Battery Mode (All Models)
| Load Level | Action |
|---|---|
| Any overload | Immediate shutdown (no overload allowance on battery) |
| Parameter | Specification |
|---|---|
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | −25°C to 55°C |
| Humidity | 0–95% RH @ 0–40°C (non-condensing) |
| Altitude Derating | < 1000 m: 100% rated load | 2000 m: 90% | 2500 m: 85% | 3000 m: 80% |
| Max Operating Altitude | 3000 m |
| Protection Class | IP20 |
| Safety Standards | IEC/EN 62040-1, IEC/EN 62477-1 |
| EMC Standards | IEC/EN 62040-2, IEC 61000 series |
| Cooling | Forced air (fan) |
Heat Dissipation (6–10 kVA, Online VFI Mode, PF 0.9)
| Model | 50% Load | 100% Load |
|---|---|---|
| 6 kVA | ≈ 179 W | ≈ 357 W |
| 10 kVA | ≈ 281 W | ≈ 563 W |
Approx. heat dissipation, calculated from 94% efficiency. Final project ventilation should follow actual model efficiency, load level and site conditions.
Typical Minimum Cable Cross-Section – 6–10 kVA
| Conductor | 6 kVA | 10 kVA |
|---|---|---|
| AC Input | 6 mm² | 10 mm² |
| AC Output | 6 mm² | 10 mm² |
| DC Battery | 6 mm² | 10 mm² |
| Ground (PE) | 6 mm² | 10 mm² |
Final cable and breaker sizing must be verified by the installer according to local electrical code, cable length, installation method and site conditions. N (neutral) and PE (earth) must remain separate; run a dedicated PE conductor to the earth terminal independently, and do not reverse input L and N.
Ideal For
Designed for rack-based IT, telecom, edge, security and industrial environments where zero-transfer online power and scalable runtime are required.
Server Rooms & IT Racks
Online double-conversion protection for rack servers, switches, storage arrays, firewalls and edge IT loads in server rooms and IT racks.
Network & Telecom
Clean online power for routers, switches, telecom shelter electronics, access equipment and 5G network cabinets in server rooms and edge sites.
Healthcare Facility IT
Online UPS protection for healthcare facility IT, laboratory instruments, imaging support loads and monitoring infrastructure – subject to project electrical requirements.
Industrial Automation
Stable online power for PLCs, SCADA workstations, industrial PCs, automation controllers and control-network equipment.
Banking & Finance IT
Mission-critical UPS for ATM networks, branch banking IT, payment systems, trading-floor workstations and network infrastructure.
Security & Surveillance Racks
Online UPS protection for IP CCTV, NVRs, access-control panels, alarm systems and security network racks in commercial and edge installations.
Need Higher PF, Lithium or Tower UPS?
Compare RM11E with related ATENCO online UPS series – RM11E Elite for PF 1.0 rack applications, RM11E PRO for LiFePO4 lithium systems and TM11E for tower installations.
Frequently Asked Questions
Answers to common RM11E rack/tower online UPS questions.
What is the RM11E rack UPS used for?
Can RM11E be installed as both rack and tower?
What capacity range does RM11E cover?
Does RM11E provide pure sine-wave output?
What is the RM11E output power factor?
Can RM11E support external battery cabinets?
Are the RM11E batteries hot-swappable?
Does RM11E support SNMP monitoring?
Can RM11E be used with a generator?
Can RM11E units work in parallel?
What is the difference between RM11E and RM11E Elite?
Does RM11E support lithium (LiFePO4) batteries?
Specifications and accessories vary by model. Final configuration should be confirmed according to load, runtime, installation and monitoring requirements.
Specify Your RM11E Rack UPS in
Two Steps
Send us your load, runtime target, rack space and site voltage. ATENCO will recommend the suitable RM11E 1–10 kVA model, battery configuration and rack accessories, including SNMP monitoring or maintenance bypass options when required, and provide a project quotation through our certified distributor network.