APC by Schneider Electric SUA500PDR-S Line-Interactive Hard Wire UPS 500VA
Overview
The APC by Schneider Electric SUA500PDR-S is a 500VA / 320W line-interactive uninterruptible power supply engineered for hardwired 3-wire installations — the configuration you reach for when standard plug-and-play UPS units are not appropriate for the installation environment. Whether you're powering a small surveillance head-end, a network closet access controller, or a permanently mounted edge device, the SUA500PDR-S delivers regulated AC output with battery backup across a wide 75–154V input window. It is part of the broader APC by Schneider Electric power protection line, which covers everything from desktop units to three-phase data center infrastructure.
The SUA500PDR-S (often searched as SUA500PDR S) is particularly well-suited for installations where a cord-and-plug connection would be a code violation or a project specification specifically calls for a hardwired feed. That distinction alone eliminates most UPS alternatives from consideration on certain commercial and industrial jobs.
Key Features
- 500VA / 320W Output Capacity: At 320W continuous output, this unit handles small-to-medium surveillance workloads — a compact NVR plus a PoE switch drawing under 300W total, for example — without riding close to the rated ceiling where battery runtime collapses. Staying below 80% load keeps your runtime predictions meaningful.
- Line-Interactive Topology: Line-interactive regulation corrects voltage sags and swells without switching to battery — a meaningful advantage in environments with chronic utility fluctuations. Battery cycles are preserved for genuine outages, extending overall battery life compared to online double-conversion designs that run the battery continuously.
- Wide Input Voltage Window (75–154V): The 75V lower threshold means the SUA500PDR-S will ride through brown-out conditions that would force a narrower unit onto battery. At 154V upper tolerance, high-voltage spikes are corrected before they reach connected equipment. For a line-interactive UPS in a commercial building with variable utility quality, this range matters.
- 540J Surge Energy Rating: Transient spikes are absorbed at 540 joules — adequate for typical utility-line surges reaching connected electronics. Note that the hard-wire input configuration still provides this protection on the output side to connected equipment.
- 7.4-Minute Full-Load / 21-Minute Half-Load Runtime: At 320W (full load), you get approximately 7.4 minutes of runtime — enough to execute a clean shutdown sequence for an NVR or edge server. At half load (~160W), runtime extends to 21 minutes, giving operators meaningful response time during an outage. Plan your load profile accordingly when sizing for runtime-critical applications.
- 2-Hour Battery Recharge Time: The sealed lead-acid VRLA battery recharges in approximately 2 hours from a fully depleted state. For sites with repeated short outages, this fast recovery means the unit is back to full protection capacity well within a standard shift.
- 94% Efficiency: At 94% operating efficiency, heat generation and power draw overhead are kept low — relevant in closets and cabinets with limited thermal headroom. A less efficient unit running 24/7 compounds heat and electricity costs over time.
- 3 AC Outlets: Three protected AC output receptacles provide flexibility for powering multiple devices from a single unit — typical for a head-end with an NVR, a managed switch, and a secondary device. For larger outlet counts, review higher-capacity models in the APC Smart-UPS family.
- LED Status Display: On-board LED indicators give instant visual confirmation of operating mode, battery status, and fault conditions — no software required for basic health monitoring in the field.
- Operating Range 0–40°C / 0–95% RH: Standard commercial operating envelope. The unit is not rated for outdoor or uncontrolled environments — deploy in a conditioned equipment room or cabinet. Storage is rated down to -15°C, which covers most warehouse and staging scenarios.
- Input Frequency Tolerance 47–63Hz: The broad frequency acceptance handles both 50Hz and 60Hz utility feeds, making the SUA500PDR-S deployable internationally or in facilities with generator power that drifts slightly off nominal frequency.
Integration & Compatibility
The hard-wire 3-wire input configuration requires licensed electrical installation — this is not a self-install unit. Output is standard AC at 120V, so connected equipment requires no special consideration. The unit is compatible with APC's PowerChute software family for managed shutdown integration, though specific software compatibility should be verified against your OS and version. For network video recorders and surveillance edge devices requiring power protection with managed shutdown capability, pair the SUA500PDR-S with a USB or serial management connection to the host device. Battery replacement uses APC's standard VRLA cartridge for this family — confirm the replacement part number against APC's documentation at service time.
Frequently Asked Questions
Q: What is the difference between the SUA500PDR-S and a standard plug-in APC UPS at the same VA rating?
A: The SUA500PDR-S uses a hard wire 3-wire input connection rather than a standard AC plug. This makes it appropriate for permanent commercial installations where electrical code or project specifications require hardwired power feeds. A licensed electrician is required for installation.
Q: How long will the SUA500PDR-S run at full load during an outage?
A: At full load (320W), runtime is approximately 7.4 minutes. At half load (approximately 160W), runtime extends to about 21 minutes. Actual runtime depends on the connected load — keeping load below 80% of rated capacity improves both runtime and battery longevity.
Q: What input voltage range does the SUA500PDR-S accept?
A: The unit accepts input voltages from 75V to 154V without switching to battery, making it tolerant of brown-out conditions and high-voltage fluctuations common in commercial utility feeds. Input frequency is accepted from 47 to 63Hz.
Q: How long does the battery take to recharge after a full discharge?
A: The sealed lead-acid VRLA battery recharges in approximately 2 hours from a fully depleted state under normal operating conditions.
Q: What are the operating environment requirements for the SUA500PDR-S?
A: The unit is rated for operating temperatures of 0–40°C (32–104°F) and relative humidity of 0–95% non-condensing. It is designed for indoor, conditioned environments such as equipment rooms and communications cabinets — not for outdoor or uncontrolled installations.
Q: How many devices can the SUA500PDR-S power simultaneously?
A: The unit provides 3 AC output receptacles. Total connected load must not exceed 320W (500VA). Distribute load across all three outlets as needed, but always verify the combined wattage of connected equipment before commissioning.
The SUA500PDR-S sits in a narrow but important product niche: it is one of the few sub-1kVA line-interactive units with hardwired 3-wire input, and that single feature changes the installation conversation entirely on commercial and institutional jobs. When a spec sheet or an AHJ requires hardwired UPS feeds — common in healthcare corridors, government facilities, and industrial spaces — this is the unit to pull. The 500VA / 320W rating and 94% efficiency make it a practical fit for a single-NVR surveillance head-end or a small comms closet, not a multi-recorder enterprise rack.
Technical Highlights:
- 75–154V Input Window: That 79-volt span from low to high tolerance means the SUA500PDR-S corrects without switching to battery across a wide range of utility conditions — sites with known brown-out issues or generator-backed feeds that drift off nominal benefit directly from this tolerance band.
- 7.4-Min Full-Load / 21-Min Half-Load Runtime: Roughly 7 minutes at 320W is enough for a scripted NVR shutdown. If your managed shutdown sequence runs longer than 5 minutes, plan to load the unit below 80% capacity — that alone buys you the half-load 21-minute window and reduces battery wear in daily cycling.
- 540J Surge Rating + Line-Interactive Topology: The combination of 540J surge absorption and active voltage regulation without online conversion means battery cycles are reserved for genuine outages rather than routine fluctuation correction — a meaningful factor for VRLA battery longevity in a 24/7 always-on installation.
Deployment Considerations:
- Hard-wire input is not field-configurable — this unit requires a licensed electrician for rough-in. Verify with your EC that the 3-wire feed and disconnect are spec'd before equipment arrives on site.
- Operating temperature ceiling is 40°C. In tight wall-mount or surface-mount enclosures without active cooling, verify ambient temperature at the UPS location — not just room temperature — before commissioning. Enclosed cabinets with multiple active devices regularly run 8–12°C above room ambient.
Position the SUA500PDR-S in permanent commercial installations where hardwired power feed is a code or spec requirement and the connected load fits within 320W — a single-NVR surveillance closet, a small access control head-end, or a remotely located network comms cabinet where a plug-in unit is not an option.
