Aruna SR 500 0.5 kVA / 300 W (90206)

A compact and affordable single-phase relay voltage stabilizer with low power. The manufacturer positions it as a basic budget product for 2019, intended for home use. It is perfect for situations that require an economical solution for protecting household appliances that do not demand precision stabilization. The device operates on the principle of step relay stabilization. A microprocessor control system continuously measures the input voltage parameters and, if they deviate beyond the specified tolerance, the controller commands the relay to switch the taps of the autotransformer windings.

This operating principle allows the Aruna SR 500 stabilizer to consistently maintain output voltage close to nominal. Efficient circuit design ensures a quick response, reliable operation over a wide input voltage range from 150 to 275 V, and absence of sinusoidal distortions. The output voltage tolerance reaches 10%, which is higher than mid-range models but generally does not affect equipment operation.

The declared active power is 300 W, which is sufficient for powering a gas boiler, circulation pump, multimedia electronics (LED TV, media player), office PC, monitor, and router. Additionally, this stabilizer can be used to protect DVR/NVR video recorders, surveillance cameras, and cash equipment, including POS terminals. The key features that distinguish this product are its compact size, affordability, operation without sinusoidal distortion, and capability to work in a wide input voltage range.