Vertiv PST6-900LVMT 900VA/550W 120V UPS

Purpose and Audience

The Vertiv PST6-900LVMT is a 900VA/550W standby UPS designed for 120V environments. It provides battery backup and surge protection for office electronics, retail systems and networking gear. The unit includes eight outlets and USB-A plus USB-C ports for charging mobile devices. It suits users who need user-replaceable VRLA batteries and a three-year warranty.

Standby Topology Limits

As a standby UPS, it switches to battery power only after detecting a utility failure, so there is a brief transfer time during an outage. The 900VA rating caps the total connected load at 550W, and the 120V input restricts use to North American mains supplies. Models above 1100VA are not covered by this series, and lithium-ion variants stop at 400VA.

Pre-Installation Checks

Verify that your equipment draws no more than 550W combined and that all plugs fit standard 120V outlets. Confirm the intended location can accommodate the unit’s footprint and that ventilation is adequate. Ensure you have a USB cable if you plan to use the Power Assist software for automated shutdown. The VRLA batteries are hot-swappable, so plan for future replacement cycles.