Product SKU: DH-PFM3350-600
Product Overview
The Dahua DH-PFM3350-600 is a compact 600VA/360W line-interactive UPS designed to provide short-term battery backup and voltage stabilisation for compatible CCTV, networking and computer equipment. Its wide 170–280VAC input range helps manage common mains fluctuations, while a typical 4–8ms transfer time switches supported loads to battery power during an outage. The built-in 12V 7Ah sealed lead-acid battery recharges to approximately 90% in 4–6 hours and powers a simulated sine-wave output when mains electricity is unavailable. Status lights and audible alarms identify mains operation, battery mode, low battery, overload, battery replacement and fault conditions. The unit is fanless and includes two European-standard output sockets, so plug compatibility and total equipment load must be confirmed before use.
Key Capabilities
600VA / 360W Backup Capacity
Supports compatible security, networking and computer equipment whose combined load remains within both the 600VA apparent-power rating and the 360W real-power limit.
Line-Interactive Voltage Regulation
The 170–280VAC input range and digital voltage stabilisation help the UPS manage common mains fluctuations before battery operation is required.
Fast 4–8ms Transfer
A typical transfer time of 4 to 8 milliseconds allows compatible connected devices to continue operating when the mains supply fails or moves outside the supported range.
Built-In 7Ah Battery
One sealed 12V 7Ah lead-acid battery provides short-term backup power and can recharge to approximately 90% in 4 to 6 hours under the specified conditions.
Status and Audible Warnings
Green, yellow and red indicators plus distinct alarm patterns communicate mains operation, battery use, low battery, overload, battery replacement and fault conditions.
Fanless Indoor Design
The UPS has no built-in fan, supporting quieter operation in offices, reception areas, network cupboards and other protected indoor locations with suitable ventilation.
Best For
- Small CCTV Recorders: Helps a compatible NVR or DVR remain operational through brief outages when the full system load is within the UPS capacity.
- Routers and Modems: Supports selected low-power network equipment to help maintain security-system connectivity during short power interruptions.
- Compact Security Workstations: Can protect a carefully sized combination of recorder, networking and control equipment without a noisy cooling fan.
- Sites with Mains Fluctuation: The 170–280VAC input range and digital voltage stabilisation help manage varying supply conditions.
- Short-Term Backup Requirements: Suits systems that need enough time to ride through brief outages or complete an orderly shutdown rather than long-duration operation.
Why Choose the DH-PFM3350-600
The DH-PFM3350-600 gives small security and network systems a practical layer of protection against brief outages, low or high mains voltage and battery-related power interruptions. Its 600VA/360W rating suits carefully selected loads, while the 170–280VAC input window helps reduce unnecessary battery use during common voltage fluctuations. The built-in 7Ah battery, 4–8ms transfer time and status alarms provide straightforward backup without the configuration demands of a large online UPS. Fanless operation is valuable in quiet offices and reception areas. Supplied by Security Wholesalers, this model is best chosen after checking both wattage and VA requirements, required runtime, battery-mode waveform and the European plug or socket arrangement.
Buyer Decision Tips
Load-Sizing Tip: Add the real wattage of every connected device and check the VA demand as well. Keep the design below both 360W and 600VA, with practical headroom for start-up demand and future battery ageing.
Runtime Tip: A UPS capacity rating does not state how many minutes it will operate. Runtime falls as the connected load increases and also changes with battery age, temperature and charge level.
Outlet Tip: Dahua lists a European input plug and two European output sockets. Confirm the supplied regional version and an approved local connection method before purchase; do not assume Australian socket compatibility.
Key Features & Technical Specifications
| Model |
DH-PFM3350-600 |
| Product Type |
European-standard 230V line-interactive uninterruptible power supply with built-in battery. |
| Capacity |
600VA / 360W. |
| Input Voltage Range |
170–280VAC. |
| Input Current |
2.9A. |
| Rated Input Frequency |
50/60Hz. |
| Power Factor |
≥0.6. |
| Default Output Voltage |
230VAC. |
| Output Current |
2.7A. |
| Output Capacity |
600VA / 360W. |
| Output Frequency |
50/60Hz. |
| Transfer Time |
Typically 4–8ms. |
| Output Waveform |
AC mode: pure sine wave; battery mode: simulated sine wave. |
| Built-In Battery |
Yes. |
| Battery Type |
Sealed lead-acid battery. |
| Battery Quantity and Capacity |
1 × 12V 7Ah battery. |
| Charging Current |
1A. |
| Limited Charge Voltage |
13.7V per battery. |
| Charging Time |
Approximately 4–6 hours to 90%. |
| Status Indicators |
Green for mains mode, flashing yellow for battery mode and solid red for fault mode. |
| Audible Alarms |
Battery mode, low battery, overload, battery replacement and continuous fault warning. |
| Protection |
Overload, short circuit, battery overcharge and battery over-discharge protection. |
| Overload Behaviour |
Timed or immediate shutdown depending on operating mode and overload level, with an overload fault indication. |
| Input Plug |
European standard. |
| Input Cable Length |
1.2m. |
| Output Sockets |
2 × European-standard sockets. |
| Built-In Fan |
No. |
| Casing |
Black plastic housing. |
| Product Dimensions |
298.4 × 101.5 × 142.2mm (L × W × H). |
| Packaging Dimensions |
342 × 142 × 223mm (L × W × H). |
| Net Weight |
4.4kg. |
| Gross Weight |
4.6kg. |
| Operating Temperature |
0 °C to +40 °C. |
| Operating Humidity |
0%–90% RH, non-condensing. |
| Storage Temperature |
–15 °C to +55 °C. |
| Storage Humidity |
0%–90% RH, non-condensing. |
| Package Contents |
UPS unit, user manual and legal or regulatory information. |
| Certifications |
CE LVD and CE EMC standards listed by Dahua. |
Ideal Use Cases
NVR or DVR Backup
Provides short-term power for a compatible recorder during brief outages, allowing footage recording and controlled shutdown where the total load is correctly sized.
Router and Modem Protection
Can help keep compatible network equipment operating through short interruptions so remote access and connected security services have a better chance of remaining available.
Small PoE Network Equipment
May support a modest PoE switch and connected devices when the measured combined load, start-up demand and required runtime remain within the UPS limits.
Reception and Office Systems
Fanless operation and compact dimensions suit protected indoor desks, counters and equipment areas where audible fan noise would be undesirable.
Access Control and Intercom Equipment
Can protect compatible low-power control and communication devices after their combined wattage, waveform requirements and plug arrangement are verified.
Voltage-Fluctuation Environments
The 170–280VAC input range and digital voltage stabilisation help manage common mains variations without immediately relying on the battery.
Choosing the Right Model
- Choose the DH-PFM3350-600 if: The total connected load is comfortably below 600VA/360W and only short-term backup is required.
- Choose a higher-capacity UPS if: The recorder, PoE switch, cameras, monitor and network equipment approach the stated load limits or require a longer runtime.
- Choose a pure-sine-wave UPS if: The connected equipment specifically requires pure sine-wave power while operating from battery.
- Choose an online UPS if: The equipment requires zero transfer time or more advanced power conditioning than a line-interactive model provides.
- Do not use for unsuitable loads: The manual warns against laser printers, scanners, medical or life-support equipment, high-current appliances and connection through a power strip or surge protector.
FAQs
- What equipment can the Dahua DH-PFM3350-600 protect?
The DH-PFM3350-600 is designed for compatible computer and security equipment with a combined load within both its 600VA and 360W ratings. Typical uses may include an NVR or DVR, modem, router, small network switch or selected CCTV accessories. Add the actual wattage of every connected device and leave operating headroom rather than designing the system at the maximum rating.
- How long will the UPS run during a power outage?
Dahua does not publish a fixed runtime for this model. Backup time depends on the connected wattage, battery condition, battery age, temperature and charging state. A lightly loaded recorder or network device will generally operate longer than a system close to 360W. Runtime should be tested with the intended equipment after the battery has been fully charged.
- Does the PFM3350-600 provide pure sine-wave output?
In normal AC mode, Dahua specifies a pure sine-wave output. In battery mode, the DH-PFM3350-600 supplies a simulated sine wave. This is suitable for many standard electronic loads, but equipment that specifically requires a pure sine wave while operating from battery should be matched to an appropriate online or pure-sine-wave UPS instead.
- How quickly does the UPS switch to battery power?
The specified transfer time is typically 4 to 8 milliseconds. This brief switching period is characteristic of a line-interactive UPS and is intended to keep compatible connected equipment operating through common mains interruptions. It is not a zero-transfer-time system, so highly sensitive equipment that cannot tolerate any interruption may require an online double-conversion UPS.
- What battery is built into the Dahua UPS?
The DH-PFM3350-600 contains one 12V 7Ah sealed lead-acid battery. Dahua specifies a charging current of 1A and approximately 4 to 6 hours to reach 90% charge. The user manual recommends charging for at least 6 hours before initial use. Battery performance reduces over time and replacement should use the same battery type under appropriate technical supervision.
- Does this UPS use Australian power sockets?
The official Dahua specification lists a European-standard input plug and two European-standard output sockets. Buyers must confirm the supplied regional version and electrical compatibility before ordering or connecting equipment. Do not assume that the unit has Australian AS/NZS 3112 outlets merely because its nominal output is 230VAC. Use only an approved installation arrangement suitable for the local electrical requirements.
- What alarms and protection features are provided?
The UPS uses coloured status indicators and audible alarms for mains mode, battery mode, low battery, overload, battery replacement and fault conditions. Dahua lists protection against overload, battery overcharge and over-discharge, while the current datasheet also highlights short-circuit protection. An alarm should be investigated promptly rather than silenced by adding more load.
- What should I check before ordering the PFM3350-600?
Confirm the combined VA and wattage of the intended equipment, the required backup duration, the European plug and socket arrangement, and whether simulated sine-wave battery output is acceptable. The UPS is for protected indoor use between 0 °C and 40 °C with adequate ventilation. Security Wholesalers can assist with basic capacity matching, but final electrical suitability must be confirmed for the installation.
Additional Information
Dahua DH-PFM3350-600_V1 Datasheet
