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This 3000VA On-Line UPS in tower format is designed to deliver high-performance double-conversion electrical protection in professional environments where power continuity is critical. It is an ideal solution for IT infrastructures, small and medium-sized data centres and industrial applications requiring a stable and secure power supply.
Thanks to on-line double conversion technology with advanced digital control, this 3000VA on-line UPS provides total isolation from mains disturbances, eliminating micro interruptions, voltage spikes, voltage drops and harmonic distortion. The pure sine wave output ensures maximum compatibility with servers, storage systems, sensitive electronics and critical loads.
The system features a 1.0 output power factor, allowing full utilisation of available active power, and achieves an efficiency of up to 95%, helping to reduce energy consumption and operating costs. Its wide input voltage range minimises battery usage and extends battery service life.
This on-line UPS in tower format integrates an intelligent charger with support for charging current up to 12A in extended runtime versions. It also includes ECO mode, cold start, compatibility with generators and intelligent fan speed control, optimising system performance and reliability.
The 3000VA On-Line Tower UPS is equipped with a blue multifunction LCD display, providing detailed real-time information on system status, operating modes, voltage, frequency, load level, battery condition, internal temperature and remaining backup time. It includes RS232 and USB communication interfaces for easy monitoring and management.
Due to its high power, reliability and robustness, this 3000VA on-line UPS in tower format is ideal for servers, IT infrastructures, communication equipment, industrial applications and mission-critical systems requiring maximum electrical stability and service continuity.
| Model | KUTON 3k S |
| Capacity | 3000 VA / 2700 W |
| Topology | On-Line double conversion |
| Nominal input voltage | 208 / 220 / 230 / 240 Vac |
| Input voltage range | 110 ~ 300 Vac (176 ~ 264 Vac at 100% load) |
| Input power factor | ≥ 0.99 |
| Bypass frequency range | 40 ~ 70 Hz (50/60 Hz auto-sensing) |
| Nominal output voltage | 208 / 220 / 230 / 240 Vac |
| Output voltage regulation | ±1% |
| Output power factor | 1.0 |
| Output frequency | 50/60 Hz ±0.1% |
| Crest factor | 3:1 |
| Total harmonic distortion (THDv) | ≤3% linear load; ≤5% non-linear load |
| Transfer time | 0 ms (AC to battery); 4 ms (inverter to bypass) |
| Waveform | Pure sine wave |
| Efficiency (AC mode) | Up to 95% |
| Efficiency (ECO mode) | Up to 90% |
| Battery type | VRLA sealed lead-acid, maintenance-free |
| Battery voltage | 72 Vdc |
| Battery capacity | 7 Ah / 9 Ah |
| Maximum charging current | Up to 12 A |
| Typical backup time | 10 minutes at 50–70% load |
| Display | Blue multifunction LCD |
| Communication | RS232 / USB |
| Operating temperature | 0 ~ 40 °C |
| Storage temperature | -25 ~ 55 °C |
| Humidity | 20 ~ 95% RH (non-condensing) |
| Noise level | <55 dB |
| Altitude | <1000 m (derating up to 3000 m) |
| Form factor | Tower |
| Dimensions (W x D x H) | 190 × 421 × 318 mm |
| Weight | 26 kg |
