Middle Atlantic FWD-CBS-1.5KVA-B27 vs ATEN OL1500LV: Specification Comparison
The Middle Atlantic FWD-CBS-1.5KVA-B27 and the ATEN OL1500LV are both 1.5 KVA rack-mount uninterruptible power supplies intended to protect AV, security, and IT equipment in 19-inch rack enclosures. The Middle Atlantic unit is designed specifically for integration into Middle Atlantic BGR series racks, offering a forward-mount, infrastructure-integrated topology. The ATEN OL1500LV is a general-purpose online rack UPS with broader OS management support. This comparison evaluates power delivery and topology, physical fit and rack integration, and monitoring and management capabilities based solely on provided specifications.
In This Guide
- Which UPS delivers the right power topology and output for your load?
- How do the two units fit into a rack, and what are the physical trade-offs?
- Which unit offers stronger remote monitoring and management integration?
- Which should you choose: the FWD-CBS-1.5KVA-B27 or the OL1500LV?
- Side-by-Side Specs
- FAQ
Which UPS delivers the right power topology and output for your load?
The Middle Atlantic FWD-CBS-1.5KVA-B27 is rated at 1500 VA / 1350 W and operates on a Line Interactive topology with MOV-based surge protection. Its input is 120 VAC at 15 A (NEMA 5-15P plug), and it delivers both 110–127 VAC output and a 48 VDC output rail, the latter likely supporting DC-powered infrastructure within the BGR rack ecosystem. Transfer time is not specified in the provided data.
The ATEN OL1500LV carries a 1.5 KVA rating; its wattage is not stated in the provided specifications. Its topology is not explicitly named in the provided data, but a transfer time of 4 ms (inverter to bypass, ECO mode) is specified — a figure consistent with line-interactive or online double-conversion designs. Input and output voltage ratings are absent from the provided specs. The ATEN carries certifications including FCC Class A, VCCI, BSMI, and RoHS; Middle Atlantic certifications are not listed in the provided data.
How do the two units fit into a rack, and what are the physical trade-offs?
The Middle Atlantic FWD-CBS-1.5KVA-B27 occupies 2 rack units (2 RU) and measures 23 in wide × 7.42 in high × 27 in deep (68.6 cm), with a 6 ft (1.8 m) input cord. Its shipping weight is 145 lbs (65.8 kg), which reflects the integrated battery and rack-infrastructure design. It is explicitly rated to support a 1,100 lb (499 kg) weight capacity — a structural rack load figure, not a UPS output figure. Mounting hardware is included. The unit is designed specifically for Middle Atlantic BGR series racks in a forward-mount configuration.
The ATEN OL1500LV weighs 14.60 kg (32.16 lb) — substantially lighter than the Middle Atlantic unit — with a 6 ft power cord. Its rack unit height and chassis depth are not provided in the available specifications. The package includes a rack mounting kit, rail slide kit, RS-232 cable, USB Type-A-to-B cable, and a tower stand set, indicating it supports both rack and tower orientations. No specific rack series integration is implied.
Which unit offers stronger remote monitoring and management integration?
The Middle Atlantic FWD-CBS-1.5KVA-B27 supports network-enabled monitoring via an optional UPX-RLNK-CARD accessory. Without this card, network management capability is not specified. No operating system compatibility, shutdown software, or communication port types are listed in the provided data.
The ATEN OL1500LV supports SNMP and HTTP remote monitoring via an optional SNMP card. It ships with both an RS-232 cable and a USB Type-A-to-B cable for local management. Supported operating systems include Linux, Windows, and macOS, with ViewPower software available for Linux and macOS and a ShutdownWizard for Windows. This gives the ATEN a broader documented software ecosystem based on provided specifications.
Which should you choose: the FWD-CBS-1.5KVA-B27 or the OL1500LV?
Our take: The FWD-CBS-1.5KVA-B27 is the stronger choice when the installation is built around Middle Atlantic BGR series rack infrastructure and requires a structurally integrated, forward-mount UPS with both AC (110–127 VAC) and DC (48 VDC) output rails at 1500 VA / 1350 W. Three concrete spec deltas define the decision: the Middle Atlantic unit delivers a stated 1350 W real power output versus no wattage figure provided for the ATEN; the Middle Atlantic chassis weighs approximately 65.8 kg versus the ATEN's 14.60 kg, reflecting a larger integrated battery plant; and the ATEN specifies a 4 ms transfer time and multi-OS management software (Linux, Windows, macOS) where the Middle Atlantic provides neither figure. Buyers outside the BGR rack ecosystem, or those prioritizing documented OS-level shutdown management and a lighter, orientation-flexible unit, should evaluate the ATEN OL1500LV instead.
Side-by-Side Comparison
Spec-for-spec, from manufacturer data.
| Specification | Middle Atlantic FWD-CBS-1.5KVA-B27 | ATEN OL1500LV |
|---|---|---|
| VA Rating | 1500 VA | 1.5 KVA |
| Watt Rating | 1350 W | — |
| Topology | Line Interactive | — |
| Input Voltage | 120 VAC | — |
| Input Plug | NEMA 5-15P | — |
| Input Amperage | 15 A | — |
| AC Output Voltage | 110–127 VAC | — |
| DC Output Voltage | 48 VDC | — |
| Transfer Time | — | 4 ms (ECO, inverter to bypass) |
| Mount Type | Rack (BGR forward-mount) | Rack / Tower |
| Rack Units | 2 RU | — |
| Depth | 27 in (68.6 cm) | — |
| Weight | 145 lb / 65.8 kg (shipping) | 14.60 kg / 32.16 lb |
| Power Cord Length | 6 ft (1.8 m) | 6 ft |
| Network Monitoring | Optional (UPX-RLNK-CARD) | Optional SNMP Card; SNMP + HTTP |
| Management Software / OS | — | ViewPower (Linux, macOS); ShutdownWizard (Windows) |
| Surge Protection | MOV | — |
| Certifications | — | FCC Class A, VCCI, BSMI, RoHS |
| Operating Temperature | 32°–104°F (0°–40°C) | — |
| Included Cables | — | RS-232, USB Type-A to B |
| Rack Mounting Hardware Included | Yes | Yes (rack kit + rail slide kit) |
Frequently Asked Questions
Which should you choose: the FWD-CBS-1.5KVA-B27 or the OL1500LV?
The FWD-CBS-1.5KVA-B27 is the stronger choice when the installation is built around Middle Atlantic BGR series rack infrastructure and requires a structurally integrated, forward-mount UPS with both AC (110–127 VAC) and DC (48 VDC) output rails at 1500 VA / 1350 W. Three concrete spec deltas define the decision: the Middle Atlantic unit delivers a stated 1350 W real power output versus no wattage figure provided for the ATEN; the Middle Atlantic chassis weighs approximately 65.8 kg versus the ATEN's 14.60 kg, reflecting a larger integrated battery plant; and the ATEN specifies a 4 ms transfer time and multi-OS management software (Linux, Windows, macOS) where the Middle Atlantic provides neither figure. Buyers outside the BGR rack ecosystem, or those prioritizing documented OS-level shutdown management and a lighter, orientation-flexible unit, should evaluate the ATEN OL1500LV instead.
Can either UPS be used outside a specific rack brand's ecosystem?
The ATEN OL1500LV includes both a rack mounting kit and a tower stand set, making it rack- and brand-agnostic. The Middle Atlantic FWD-CBS-1.5KVA-B27 is explicitly designed for Middle Atlantic BGR series racks in a forward-mount configuration; the provided specifications do not describe compatibility with third-party rack enclosures.
Which unit is easier to integrate with a network monitoring system?
Both units require an optional add-on card for network monitoring — the Middle Atlantic needs the UPX-RLNK-CARD and the ATEN needs an optional SNMP card. However, the ATEN's provided specs describe SNMP and HTTP support, OS-level shutdown software for Windows, Linux, and macOS, and include RS-232 and USB cables in the box. The Middle Atlantic's network management capabilities beyond the card itself are not detailed in the provided specifications.
Is the FWD-CBS-1.5KVA-B27 or OL1500LV better for space-constrained deployments?
The ATEN OL1500LV is substantially lighter at 14.60 kg (32.16 lb) versus the Middle Atlantic's 145 lb (65.8 kg) shipping weight, and its rack unit height and depth are not specified in the provided data, preventing a direct chassis-size comparison. The Middle Atlantic occupies 2 RU at a 27 in depth. For shallow or weight-sensitive racks outside the BGR ecosystem, the ATEN's physical profile warrants direct measurement verification before purchase.
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