APC SMX2KR2UNCX145 1920VA Rack/Tower Line-Interactive UPS
Overview
The APC SMX2KR2UNCX145 is a line-interactive uninterruptible power supply designed to provide battery-backed power protection and voltage stabilization for rack-based IT systems. It is typically deployed by infrastructure teams protecting servers, network switches, storage appliances, and edge infrastructure from outages, brownouts, and electrical disturbances. The system maintains stable AC output and provides sufficient runtime to allow controlled shutdown procedures during extended utility interruptions.
The unit provides 1920VA / 1800W output capacity with pure sine wave output suitable for modern IT power supplies using active power factor correction. Its line-interactive architecture incorporates Automatic Voltage Regulation to correct high- and low-voltage conditions without switching to battery operation, helping extend battery life and maintain efficient operation during normal utility fluctuations. The UPS operates in 120V environments and connects to facility power through a NEMA L5-20P input connector.
Power distribution is delivered through a combination of seven output receptacles, including NEMA 5-15R, NEMA 5-20R, and L5-20R connections. These outlets support mixed loads commonly found in rack environments, including servers, switches, and rack power distribution units. The UPS maintains sine wave output with minimal distortion and a typical transfer time of approximately 4 ms when switching to battery operation during power disturbances.
The system supports rack or tower installation, allowing flexible deployment within standard 19-inch racks or equipment rooms where vertical placement is preferred. In rack configurations the unit occupies 2U of rack space, enabling installation within network closets, branch infrastructure racks, or small data center cabinets where moderate power capacity is required without consuming excessive rack height.
Management capabilities include USB and serial communication interfaces along with a SmartSlot expansion interface. The unit is bundled with a network management card that enables remote monitoring, alerting, and automated shutdown integration across server infrastructure and virtualization environments. Administrators can monitor load conditions, battery status, and power events through centralized management systems or network-based monitoring tools.
A typical deployment includes a rack containing multiple rack servers, firewall appliances, and aggregation switches. In this configuration, the UPS maintains stable power delivery while providing runtime for automated shutdown or workload failover procedures when upstream utility power becomes unavailable.
Key Features
• 1920VA / 1800W line-interactive UPS capacity
• Rack or tower convertible chassis for flexible deployment
• Pure sine wave output for modern server power supplies
• Mixed NEMA outlet configuration for diverse rack loads
• Preinstalled network management card for remote monitoring
Technical Specifications
| Specification | Details |
|---|
| Brand | APC |
| Part Number | SMX2KR2UNCX145 |
| Product Type | Rack/Tower Line-Interactive UPS |
| UPS Topology | Line-Interactive |
| Power Capacity | 1920VA / 1800W |
| Nominal Input Voltage | 120V AC |
| Input Voltage Range | 70-153V AC |
| Nominal Output Voltage | 120V AC |
| Input Connector | NEMA L5-20P |
| Output Receptacles | 3 × NEMA 5-15R, 3 × NEMA 5-20R, 1 × NEMA L5-20R |
| Output Waveform | Pure Sine Wave |
| Transfer Time | ~4 ms |
| Surge Energy Rating | 540 Joules |
| Battery Type | Sealed Lead-Acid |
| Typical Recharge Time | ~3 hours |
| Form Factor | Rackmount / Tower Convertible |
| Rack Height | 2U |
| Dimensions (H × W × D) | 3.36 × 17.0 × 26.26 in |
| Weight | 84.6 lb |
| Operating Temperature | 32-104 °F (0-40 °C) |
