Dahua PFM3350-1500: your system stays online during a power failure
The Dahua PFM3350-1500 is a 1500 VA / 900 W line-interactive UPS. In the event of a power failure or brief interruption, it switches over to the built-in battery within a few milliseconds, so your cameras, NVR, switch or network simply keep running.
With a wide input voltage of 170 to 280 VAC, the UPS also works stably on a weak or fluctuating mains supply, and it corrects the voltage automatically. Four earthed sockets power your equipment; the plug-and-play design makes installation simple.
Why this UPS
Wide input voltage
Operates stably from 170 to 280 VAC and adapts to fluctuations in the mains supply.
Fast switchover
Switches over to the battery within 4 to 8 milliseconds, so connected equipment does not shut down.
Built-in battery
Two 7Ah lead-acid batteries bridge the power failure and recharge to 90% in 4 to 6 hours.
Four outputs
Four earthed sockets (EU) for, for example, an NVR, switch and camera power supply.
Protected
Protection against overload, short circuit, overcharging and deep discharge of the battery.
Quiet and stable
Runs quietly and keeps the output voltage digitally stable.
Technical specifications
| Power | |
| Capacity | 1500 VA / 900 W |
| Topology | Line-interactive |
| Input | |
| Input voltage | 170-280 VAC |
| Input current | 7,2 A |
| Frequency | 50/60 Hz |
| Output | |
| Output voltage | 230 VAC (standard) |
| Output current | 6.9 A |
| Transfer time | 4-8 ms |
| Waveform | Mains power: pure sine wave; battery: simulated sine wave |
| Battery | |
| Type | Built-in, lead-acid battery, 2x 7 Ah |
| Charging time | 4-6 hours to 90% |
| Connections | |
| Outputs | 4x earthed socket (EU) |
| Input plug | EU, cable 1.2 m |
| Protection | |
| Security | Overload, short circuit, overcharging, deep discharge |
| Housing | |
| Dimensions | 374,5 x 138,4 x 166,5 mm |
| Weight | 11.4 kg |
| Material / colour | Plastic front + metal body, black |
| Environment | |
| Operating temperature | 0 to 40 °C, 0-90% non-condensing |
| Certification | |
| Standards | CE (EN IEC 62040-1, EN 62040-2, EN 61000-3) |
Frequently asked questions
What do I use this UPS for?
To keep your camera system, NVR, switch or network online during a power failure or brief interruption. The UPS bridges the outage with the battery and protects against voltage spikes.
How long does the battery bridge a power failure?
That depends on how much power you connect (maximum 900 W). The lighter the load, the longer the bridging time. For an estimate for your setup, you can contact [email protected].
Are the batteries replaceable?
Yes, the UPS has built-in lead-acid batteries (2x 7 Ah) that can be replaced. The UPS gives a signal when the battery needs replacing.
Which plugs does it have?
One EU earthed input plug with a 1.2 metre cable and four EU earthed outputs.
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