Ubiquiti UPS-2U-US UniFi 1.44kVA/1000W Rackmount UPS
Overview
The Ubiquiti UPS-2U-US is a UniFi-managed rackmount uninterruptible power supply designed to protect critical network and storage equipment during power outages, voltage sags, and surges. With a 1,440VA/1,000W capacity and line-interactive topology, it provides reliable battery backup for UniFi gateways, switches, network video recorders, and NAS devices. The 2U rackmount form factor integrates into standard equipment racks, making it suitable for data closets, server rooms, and professional network installations [citation:5][citation:15].
Power and Runtime
The UPS delivers 1,000W of active power with a simulated sine wave output in battery mode. Runtime is 2.3 minutes at full load (1,000W) and 8 minutes at half load (500W), sufficient to ride through brief outages or allow graceful shutdown of connected equipment [citation:5][citation:15]. Transfer time from AC to battery is 6 ms typical (10 ms maximum), minimizing interruption to sensitive electronics [citation:14].
The unit includes automatic voltage regulation that stabilizes minor voltage fluctuations without switching to battery, maintaining output within the 89–145V AC input range [citation:5][citation:15].
Outlets and Protection
The UPS-2U-US provides 8 total outlets: 4 NEMA 5-15R outlets with battery backup and surge protection, and 4 NEMA 5-15R outlets with surge protection only [citation:5][citation:14]. The input connection is a NEMA 5-15P plug with a 1.8 m (5.9 ft) non-removable power cord [citation:15]. Overload protection is rated at 110% for 5 minutes before fault, and 120% for immediate fault [citation:15].
Two RJ45 GbE ports provide surge in/out protection for network data lines [citation:14].
UniFi Management and Graceful Shutdown
The UPS features a 10/100 Mbps Ethernet management port for integration with the UniFi platform. Once adopted, it enables remote monitoring of battery status, load, and runtime through UniFi software. The UPS supports Graceful Shutdown for UNVR and UNAS devices, and includes NUT (Network UPS Tools) compatibility for third-party devices [citation:2][citation:8][citation:15].
For Graceful Shutdown functionality, UniFi OS version 4.4.3 or higher is required [citation:2][citation:10].
Battery
The UPS uses two 12V, 9Ah lead-acid batteries (216Wh total capacity) that are field-replaceable and hot-swappable, allowing replacement without powering down connected equipment [citation:5][citation:14][citation:15]. Recharge time is 6–8 hours to 90% capacity. The front-panel LED indicators show battery charge and operational status [citation:15].
Key Features
- 1,440VA/1,000W line-interactive UPS with simulated sine wave output
- 4 battery backup outlets and 4 surge-only outlets (NEMA 5-15R)
- Hot-swappable, field-replaceable 216Wh lead-acid battery
- UniFi management via 10/100 Mbps Ethernet port with Graceful Shutdown for UNVR and UNAS
- NUT compatibility for third-party device shutdown
Applications
The UPS-2U-US is suited for protecting UniFi networking equipment in data closets, server rooms, and professional installations. It is designed for use with UniFi gateways, switches, and Protect NVRs, as well as UniFi NAS products. The mix of battery-backed and surge-only outlets allows critical devices to receive battery backup while less critical equipment receives surge protection without consuming battery runtime [citation:14].
The 2U rackmount form factor and galvanized steel construction support permanent installation in standard equipment racks [citation:15].
DC Supplies Product Note
Graceful Shutdown requires UniFi OS version 4.4.3 or higher. The UPS functions as a NUT server, reporting status to connected NUT clients for third-party device shutdown. Verify compatibility with your specific UniFi OS version and device models before deployment. The US version includes a NEMA 5-15P input plug and is rated for 120V AC operation [citation:5][citation:15].
Specifications
| Brand | Ubiquiti |
| Part Number / MPN | UPS-2U-US |
| Product Type | Rackmount Uninterruptible Power Supply |
| Capacity | 1,440VA / 1,000W |
| UPS Topology | Line interactive |
| Waveform | Simulated sine wave (Battery mode) |
| Transfer Time | 6 ms typical; 10 ms max |
| Input Voltage Range | 89–145V AC |
| Nominal Input Voltage | 120V AC |
| Output Voltage | 120V AC |
| Frequency Range | AC mode: 50/60 Hz ±5 Hz; Battery mode: 60 Hz ±1 Hz |
| Runtime (Full Load) | 2.3 minutes |
| Runtime (Half Load) | 8 minutes |
| Battery Type | Lead Acid 12V, 9Ah (2 units) |
| Battery Capacity | 216 Wh |
| Battery Recharge Time | 6–8 hours to 90% |
| Hot-Swappable Battery | Yes |
| Field Replaceable Battery | Yes |
| Outlets | 4 × NEMA 5-15R (Battery + Surge); 4 × NEMA 5-15R (Surge only) |
| Input Connector | NEMA 5-15P |
| Management Interface | (1) 100/10 MbE port |
| Surge Ports | (2) GbE ports for surge in/out |
| Operating Temperature | 0 to 40°C (32 to 104°F) |
| Storage Temperature | -20 to 50°C (-4 to 122°F) |
| Operating Humidity | 0 to 95% noncondensing |
| Dimensions | 442.4 × 300 × 87.4 mm (17.4 × 11.8 × 3.4") |
| Weight | 14 kg (30.9 lb) |
| Enclosure Material | Galvanized steel |
| Form Factor | Rack mount (2U) |
| Weatherproofing | IP20 |
| Certifications | FCC, IC, UL 1778, CSA C22.2 No. 107.3 |
| NDAA Compliant | Yes |
| UPC | 810177161899 |
FAQs
Does the UPS-2U-US require UniFi OS 4.4.3 for Graceful Shutdown?
Yes. Graceful Shutdown functionality for UNVR and UNAS requires UniFi OS version 4.4.3 or higher [citation:2][citation:10].
Can the battery be replaced without shutting down connected equipment?
Yes. The batteries are hot-swappable and field-replaceable, allowing replacement without powering down the UPS or connected devices [citation:14][citation:15].
What is the difference between the battery backup and surge-only outlets?
The 4 battery backup outlets provide both surge protection and battery power during an outage. The 4 surge-only outlets protect against voltage spikes but do not provide battery backup, allowing you to reserve runtime for critical equipment [citation:14].
Does the UPS support third-party equipment shutdown?
Yes. The UPS includes NUT (Network UPS Tools) server compatibility, allowing it to report status to NUT clients for managing shutdown of non-UniFi devices such as Synology or Ugreen NAS systems [citation:8][citation:11].
