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SinusPRO 550E Plus is a device designed to function as an uninterruptible power supply (UPS). It provides a 230 V AC output with a pure sine wave and features a built-in AVR stabilizer, ensuring voltage stability and making it suitable for powering electronic devices. The continuous maximum output power is 350 W, while the maximum peak power is 550 VA. You can connect an external 12 V battery to the device. In addition to standard AGM and gel batteries, the SinusPRO 550E Plus also supports LiFePO4 batteries. The maximum battery charging current is 10 A, and you can choose between 3 A, 5 A, or 10 A. The transfer time between mains and battery power is less than 4 ms.
350 W Uninterruptible Power Supply
The offered product is designed to function as an uninterruptible power supply (UPS), providing 350 W of continuous output power and 550 VA of peak (starting) power. It features a built-in AVR stabilizer and provides a stable 230 V AC output with a sinusoidal waveform. When connected to external batteries, it can protect connected devices against power outages or electrical system failures. The transfer time between mains and battery power is less than 4 ms.


Support for AGM, Gel, and LiFePO4 Batteries, Charging Current up to 10 A
The device supports standard AGM and gel batteries and additionally supports a newer type of battery - LiFePO4. SinusPRO features a built-in charger with a maximum charging current of 10 A. You can select one of three charging current settings: 3, 5, or 10 A. The connected batteries are protected against excessive discharge. The battery capacity and type should be selected according to the required backup time and the type of power supply.
Essential Protection Features
The SinusPRO 550E Plus includes all essential protection features and is protected against overload, short circuit, excessive temperature, high / low voltage, low battery voltage, excessive battery discharge, and reverse polarity. The power supply is equipped with active cooling, with fan speed adjusted according to the temperature and ambient conditions.

Specifications
| Volt 3SPM05012M | |
| General Specifications | |
|---|---|
| Maximum peak power | 550 VA |
| Maximum continuous power | 350 W |
| Transformer | C.R.G.O transformer |
| Display | LED (data type, operation, charging, battery) |
| Mains Input | |
| Input voltage | 170 - 270 V AC |
| Output frequency | 45 - 65 Hz |
| Device Output | |
| Output voltage (inverter mode) | 320 V AC ±3% |
| Output voltage (AVR mode) | 216 – 245 V |
| Output frequency | 50/60 Hz ±0,3 Hz |
| Voltage waveform | Pure sine wave |
| Waveform distortion | ≤3% |
| Transfer time (mains / battery) | < 4 ms |
| Battery and charging | |
| Battery voltage | 12 V DC |
| Supported battery types | AGM, gel, LiFePO4 |
| Charging voltage |
Cyclic: 13.9 - 14.5 V Float: 13.3 - 13.9 V |
| Minimum Permissible Battery Voltage |
AGM: 10.5 - 11 V LiFePO4: 10.9 - 11.5 V |
| Battery Discharge Protection Activation Threshold |
AGM: 9.8 - 11.5 V LiFePO4: 10.6 - 11 V |
| Available charging current (selectable) | 3 A / 5 A / 10 A |
| Maximum charging current | 10 A |
| Protection and Environmental Specifications | |
| Protection features | Overload, high temperature, high / low output voltage, low battery voltage, short circuit, overcharging, excessive discharge, reverse polarity |
| Cooling system | Automatic fan speed adjustment according to temperature and load |
| Permissible operating temperature | 0°C to 40°C |
| Permissible humidity | 10%-90% RH, non-condensing |
| Permissible storage temperature | 15°C to 45°C |
| Dimensions and Weight | |
| Net dimensions (W × D × H) | 138 × 226 × 155 mm |
| Net weight | 4 kg |










