This APC PDU that has smallest footprint which minimizes your real estate expenses and with it circuit breaker panel it provides breaker positions for distribution to racks and power zones. The system mobility of this PDU equipment can easily be relocated to accommodate a changing data center environment. The PDU has transformer for Step-down or Step-up or Isolation the step down transformer placed upstream of the UPS to avoid inrush current and saturation eliminating need to oversize transformer and alarm threshold s current in which transformers on each circuit that can provide amp ratings on each circuit position to prevent circuit breaker overloads.