Uninterruptible Power Supply CyberPower ST900U 0.9 kVA 500W Standby
Uninterruptible Power Supply CyberPower ST900U 0.9 kVA 500W StandbyHome offices and small businesses facing unexpected power outages require a reliable uninterruptible power supply to keep their devices operational. The CyberPower ST900U provides essential power protection with a standby design, ensuring your electronics remain functional during interruptions.
With a capacity of 0.9 kVA and 500 Watts, this UPS delivers stable power through a pseudo sine wave output, compatible with a wide range of devices. Its input voltage range of 96 V - 140 V allows for flexible deployment in various environments.
- Capacity: 0.9 kVA / 500 Watts
- Power Type: Standby (Offline)
- Output Waveform: Pseudo sine wave
- Input Voltage Range: 96 V - 140 V
Built for small business infrastructure and home office setups that require dependable power protection against outages.
Available stock: 71
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Estimated delivery: Oct 05 - Oct 09
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| Features | |
|---|---|
| UPS topology | Standby (Offline) |
| Output power capacity | 0.9 kVA |
| Output power | 500 W |
| Waveform | Pseudo sine |
| Input operation voltage (min) | 96 V |
| Input operation voltage (max) | 140 V |
| Input frequency | 47/63 Hz |
| Output operation voltage (min) | 120 V |
| Output operation voltage (max) | 120 V |
| Output frequency | 50/60 Hz |
| Transfer time (Line Mode to Battery Mode) | 8 ms |
| Surge protection | Yes |
| Power protection features | Overload |
| Audible alarm(s) | Yes |
| Audible alarm modes | Alarm when on battery, Fault, Low battery alarm, Overload alarm |
| Socket circuit breaker | Yes |
| Ports & interfaces | |
| AC outlet types | NEMA 5-15R |
| Power plug | NEMA 5-15P |
| AC outlets quantity | 12 AC outlet(s) |
| USB port | Yes |
| USB 2.0 ports quantity | 2 |
| USB port type | USB Type-A |
| Battery | |
| Battery technology | Sealed Lead Acid (VRLA) |
| Battery capacity | 7.2 Ah |
| Battery voltage | 12 V |
| Number of batteries supported | 1 |
| Typical backup time at full load | 2 min |
| Typical backup time at half load | 7.5 min |
| Battery recharge time | 8 h |
| Design | |
| Form factor | Compact |
| Cable length | 1.5 m |
| Product colour | Black |
| LED indicators | Power |
| Operational conditions | |
| Operating temperature (T-T) | 0 - 40 °C |
| Storage temperature (T-T) | -15 - 45 °C |
| Operating relative humidity (H-H) | 0 - 95% |
| Operating altitude | 0 - 3000 m |
| Non-operating altitude | 0 - 15000 m |
| Certificates | |
| Compliance certificates | RoHS |
| Packaging content | |
| Cables included | USB cable |
| Manual | Yes |
| Safety regulation & standards | |
| Safety | UL1778, cUL, FCC DOC B, CEC |
| Sustainability | |
| Sustainability certificates | ENERGY STAR |
| Weight & dimensions | |
| Width | 309 mm |
| Depth | 177 mm |
| Height | 78 mm |
| Weight | 3.49 kg |


