Middle Atlantic OL1500R-2 vs ATEN OL1500LV: Specification Comparison
Both the Middle Atlantic UPX-RLNK-OL1500R-2 (Nexsys OL1500R-2) and the ATEN OL1500LV are 1.5 kVA rack-mount online (double-conversion) UPS units aimed at AV, IT, and physical-security rack installations. This comparison covers the three most decision-relevant axes for an online UPS at this power class: power architecture and output capacity, physical form factor and installation requirements, and management and integration capabilities.
In This Guide
- Which unit delivers more usable watt output and how does each handle power conversion?
- How do the two units compare in physical size, weight, and rack-installation requirements?
- What management, monitoring, and software integration options does each unit offer?
- Which should you choose: the OL1500R-2 or the OL1500LV?
- Side-by-Side Specs
- FAQ
Which unit delivers more usable watt output and how does each handle power conversion?
The Middle Atlantic OL1500R-2 is rated at 1500 VA / 1350 W, giving a power factor of 0.90. It operates as a true online double-conversion UPS, meaning the load is always powered from the inverter with no transfer-time gap during a utility failure. Input and output are specified at 110–127 VAC on a NEMA 5-15P/R plug-and-receptacle combination, and it provides 8 NEMA 5-15R outlets arranged in switchable banks for outlet-level load control.
The ATEN OL1500LV is also rated at 1500 VA, but its continuous watt rating is not stated in the provided specifications. ATEN does disclose a 4 ms transfer time labeled '(ECO),' which suggests the unit may operate in an ECO/line-interactive bypass mode under normal conditions rather than strict double-conversion, though this cannot be confirmed from the specs alone. Output receptacle type, plug type, and explicit wattage figures are absent from the provided ATEN spec set.
For buyers who require guaranteed zero-transfer online conversion and need to know the exact watt budget, the OL1500R-2 provides both — 1350 W confirmed and true online topology. The OL1500LV's watt output and exact topology remain unconfirmed from the data provided.
How do the two units compare in physical size, weight, and rack-installation requirements?
The Middle Atlantic OL1500R-2 measures 19 in W × 3.5 in H × 16 in D (48.3 × 8.9 × 40.6 cm) and weighs 44.7 lbs (20.3 kg), with a shipping weight of 51.85 lbs (23.5 kg). It requires 2U of rack space (3.5 in height) and specifies a mounting depth range of 22–34 in (55.9–86.4 cm), accommodating a wide variety of rack depths. It uses 4 mounting points.
The ATEN OL1500LV is listed as rack-mount and weighs 14.60 kg (32.16 lb). Its rack unit height, chassis depth, and mounting depth requirements are not stated in the provided specifications. The package includes a rack mounting kit and a rail slide kit, indicating tool-assisted rack installation, but dimensional constraints cannot be evaluated from the available data.
The OL1500R-2 is meaningfully heavier at 44.7 lbs vs. 32.16 lbs for the OL1500LV — a relevant consideration for upper-rack placement and structural loading. The OL1500R-2's stated 22–34 in mounting depth range also aids pre-installation planning; equivalent data is absent for the OL1500LV.
What management, monitoring, and software integration options does each unit offer?
The Middle Atlantic OL1500R-2 features bank-level outlet control ('Bank' outlet control type), enabling installers to sequence or shed load groups independently. Beyond outlet control, the specs do not list SNMP, HTTP, or software management interfaces. Certifications include cTUVus safety, Energy Star 2.0, FCC REACH, and the unit is noted as non-TAA-compliant.
The ATEN OL1500LV supports SNMP and HTTP remote monitoring via an optional SNMP card add-on. Software management spans Linux, Windows, and macOS through the ViewPower application, plus a Windows-only ShutdownWizard utility. An RS-232 cable and USB Type-A-to-B cable are included in the box for local connectivity. Certifications listed are VCCI, BSMI, FCC Class A, and RoHS.
For remote monitoring and cross-platform software management, the OL1500LV has a clear edge — SNMP card capability and ViewPower on all three major OSes are not matched by any equivalent listed feature on the OL1500R-2. The OL1500R-2 counters with bank-level outlet switching, which the OL1500LV does not document. Neither unit's SNMP or outlet-control features are available on the other.
Which should you choose: the OL1500R-2 or the OL1500LV?
Our take: The OL1500R-2 is the stronger choice when confirmed online double-conversion topology, precise watt capacity, outlet-level bank switching, and deep-rack installation flexibility are the primary requirements. It delivers a documented 1350 W (vs. unstated watts for the OL1500LV), operates at a confirmed 0.90 power factor with zero transfer time, and supports mounting in racks from 22 to 34 in deep. The OL1500LV holds the advantage in remote management: its optional SNMP card and ViewPower software cover Linux, Windows, and macOS — capabilities absent from the OL1500R-2's provided spec set — and it is lighter at 32.16 lbs vs. 44.7 lbs. Choose the OL1500R-2 for AV and physical-security rack builds where guaranteed clean online power and bank-level load control are non-negotiable; choose the OL1500LV where cross-platform software monitoring and lighter weight outweigh the need for a confirmed watt rating.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Middle Atlantic OL1500R-2 | ATEN OL1500LV |
|---|---|---|
| VA Rating | 1500 VA | 1500 VA |
| Watt Output | 1350 W | — |
| Power Factor | 0.90 | — |
| Topology | Online (double-conversion) | — |
| Transfer Time | — | 4 ms (ECO mode) |
| Outlet Count | 8 × NEMA 5-15R | — |
| Outlet Control | Bank switching | — |
| Input Plug | NEMA 5-15P | — |
| AC Voltage Output | 110–127 VAC | — |
| Power Cord Length | 6 ft (1.8 m) | 6 ft |
| Weight | 44.7 lbs (20.3 kg) | 32.16 lbs (14.60 kg) |
| Dimensions (W × H × D) | 19 × 3.5 × 16 in | — |
| Mounting Depth Range | 22–34 in (55.9–86.4 cm) | — |
| Rack Mount | Yes | Yes |
| SNMP / HTTP Monitoring | — | Yes – optional SNMP card |
| Management Software OS Support | — | Windows, Linux, macOS |
| Operating Temperature | 32°–104°F (0°–40°C) | — |
| Certifications | cTUVus, Energy Star 2.0, FCC REACH | VCCI, BSMI, FCC Class A, RoHS |
| TAA Compliant | No | — |
Frequently Asked Questions
Which should you choose: the OL1500R-2 or the OL1500LV?
The OL1500R-2 is the stronger choice when confirmed online double-conversion topology, precise watt capacity, outlet-level bank switching, and deep-rack installation flexibility are the primary requirements. It delivers a documented 1350 W (vs. unstated watts for the OL1500LV), operates at a confirmed 0.90 power factor with zero transfer time, and supports mounting in racks from 22 to 34 in deep. The OL1500LV holds the advantage in remote management: its optional SNMP card and ViewPower software cover Linux, Windows, and macOS — capabilities absent from the OL1500R-2's provided spec set — and it is lighter at 32.16 lbs vs. 44.7 lbs. Choose the OL1500R-2 for AV and physical-security rack builds where guaranteed clean online power and bank-level load control are non-negotiable; choose the OL1500LV where cross-platform software monitoring and lighter weight outweigh the need for a confirmed watt rating.
Does the OL1500R-2 or OL1500LV support remote SNMP monitoring out of the box?
Neither unit ships with SNMP active out of the box. The ATEN OL1500LV supports SNMP and HTTP remote monitoring via an optional SNMP card add-on, and its specs confirm this capability. The Middle Atlantic OL1500R-2's provided specifications do not list any SNMP or HTTP management interface.
Which UPS is easier to fit into a shallow or non-standard rack depth?
The Middle Atlantic OL1500R-2 specifies a mounting depth range of 22–34 in (55.9–86.4 cm), giving clear guidance for rack planning. The ATEN OL1500LV's chassis depth and required mounting depth are not stated in the provided specifications, so its rack-depth compatibility cannot be evaluated from available data.
Can I control individual outlet groups on either of these units?
The Middle Atlantic OL1500R-2 provides bank-level outlet control across its 8 NEMA 5-15R receptacles, allowing load groups to be switched or sequenced independently. The ATEN OL1500LV's provided specifications do not document per-outlet or bank-level switching capability.
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