An Online UPS (Uninterruptible Power Supply) system is a type of UPS that provides continuous, reliable power to connected devices by converting incoming AC (alternating current) power into DC (direct current) and then back into AC. This ensures a consistent and stable output, even during power fluctuations, surges, or outages. Unlike offline UPS systems, which switch to battery power only when there is a power failure, an online UPS delivers uninterrupted power by continuously supplying clean and conditioned electricity, making it ideal for sensitive and mission-critical equipment such as servers, data centers, medical devices, and industrial machinery. Online UPS systems are designed for high performance, offering features like voltage regulation, harmonic filtering, and protection against surges, ensuring that the connected load is always protected from power disruptions.