Vertiv Liebert TDU 4000VA/40 TDU-4000RTL630 | Rack Tower UPS

Keep critical equipment online with the Vertiv Liebert TDU 4000VA/40, a 4,000 VA rack-tower power protection unit designed for demanding IT environments. The combination of high capacity, 10 NEMA outlets, and 94% AC-AC efficiency makes it a strong fit for deployments where power quality, runtime continuity, and cabinet efficiency all matter. Its rack-tower form factor gives teams flexibility in how they deploy power protection across server rooms, branch infrastructure, and edge cabinets. Forced-air cooling helps support stable operation under load, while the UL and cUL listing provides an added layer of confidence for standardized installations. For procurement teams, the value is clear: this is not a basic power strip or low-capacity backup device. It is built to support higher-density equipment with the electrical headroom and outlet count needed to reduce downstream compromises. Choose it when you need more than simple surge protection. The TDU 4000VA/40 is suited to environments where uptime, orderly cable management, and efficient power conversion justify a more capable platform.