

The SmartOnline S3MX Series 3-Phase 380/400/415V 30kVA 27kW On-Line Double-Conversion UPS, also known as the SmartOnline S3MX PowerGuard UPS, is built for mission-critical environments where power reliability is non-negotiable. With true online double-conversion technology, it delivers clean, continuous power and zero transfer time—keeping your systems protected 24/7.
No flicker. No downtime. Just steady power.
This UPS uses on-line double-conversion, meaning incoming AC power is converted to DC and back to AC at all times. As a result, connected equipment is fully isolated from power disturbances like spikes, sags, noise, and frequency variations.
Because sensitive systems deserve premium protection.
With a powerful 30kVA (27kW) capacity, the SmartOnline S3MX supports heavy electrical loads with ease. It’s ideal for large IT infrastructures and industrial applications that demand consistent, high-quality power.
Built for serious workloads.
Supporting 380V / 400V / 415V 3-phase input and output, this UPS integrates seamlessly into commercial and industrial power systems. That flexibility makes deployment easier across different facilities.
One UPS. Multiple power standards.
The SmartOnline S3MX PowerGuard UPS is perfect for:











