KSTAR UA300 Line-Interactive UPS 3000VA / 1800W With AVR LCD Display, Fast Charging, Auto Restart, Simulated Sinewave Generator Compatible, Backup Power, Four Output Sockets , 12V / 9Ah x4 Batteries

Expert Features 3000VA / 1800W High-Capacity Power Output: The UA300 is built to handle heavy-duty loads, delivering stable backup power for high-end PCs, workstations, servers, networking equipment, and critical electronics. Line-Interactive UPS Architecture: Actively regulates unstable utility power while minimizing battery usage, ensuring efficient operation and extended battery life. Automatic Voltage Regulation (AVR Boost & Buck): Corrects over-voltage and under-voltage conditions without switching to battery, protecting connected equipment from power fluctuations. Simulated Sinewave Output: Supplies simulated sinewave power during battery mode, providing reliable compatibility with computers, office devices, and network hardware. Ultra-Fast Transfer Time: Seamlessly switches to battery backup in as little as 2–6 ms (10 ms max), keeping systems running without interruption. Cold Start Function: Allows the UPS to power on directly from battery without AC input, ensuring availability during complete power outages. Four Output Sockets: Provides power to multiple devices simultaneously, making the UA300 suitable for full workstation or small server setups. High-Capacity Battery Configuration: Equipped with four 12V / 9Ah batteries to deliver extended runtime and consistent backup performance. Fast Charging Capability: Recharges batteries up to 90% capacity within 6–8 hours, reducing downtime between power events. Auto Charging At Off Mode: Continues charging the internal batteries even when the UPS is switched off but connected to AC power. Auto Restart On AC Recovery: Automatically restores output power once utility power returns, eliminating the need for manual restart. Built-In Self-Diagnostic Function: Continuously monitors system health to ensure reliable operation and early fault detection. Comprehensive Protection System: Integrated overload and overcharge protection safeguards both the UPS and connected devices. LCD Status Display: Provides real-time visibility of AC mode, battery mode, load level, battery level, input voltage, output voltage, overload status, faults, and battery low warnings. Audible Alarm Notifications: Distinct alarm patterns instantly communicate battery mode, low battery, overload, battery replacement, or fault conditions. Modem / LAN Surge Protection: Shields communication and network lines from power surges and voltage spikes. Generator Compatible (Optional): Designed to operate reliably with generator power sources for extended backup scenarios.   Expert Specs Specification Details Model UA300 Capacity 3000VA / 1800W UPS Type Line-Interactive Nominal Input Voltage 220 / 230 / 240 Vac Input Voltage Range 162 – 290 Vac Input Frequency Range 50 / 60 Hz ±10% Output Voltage (Battery Mode) Simulated Sinewave, ±10% Output Frequency (Battery Mode) 50 Hz or 60 Hz ±1 Hz Transfer Time Typical 2–6 ms, 10 ms Max Output Sockets 4 Battery Type 12V / 9Ah Battery Quantity 4 Batteries Typical Recharge Time 6–8 Hours (90% Capacity) Protection Overload, Overcharge Display LCD Indicators AC Mode, Battery Mode, Load Level, Battery Level, Input Voltage, Output Voltage, Overload, Fault, Battery Low Alarm – Battery Mode Beep Every 10 Seconds Alarm – Battery Low Beep Every Second Alarm – Overload Beep Every 0.5 Second Alarm – Battery Replacement Beep Every 2 Seconds Alarm – Fault Continuous Sound Management Interface NONE Supported OS NONE Operating Temperature 0°C – 40°C Humidity Range 0 – 95% (Non-Condensing) Noise Level < 40 dB @ 1 Meter Dimensions (W×D×H) 144 × 432.5 × 207 mm Net Weight 23 kg Safety Standards IEC/EN 62040-1, IEC/EN 60950-1 EMC Standards IEC/EN 62040-2, IEC 61000-4 Series