Symmetra PX 80K UPS Input Circuit Breaker Selection Application Note

This application note specifies permitted input circuit breaker (OCPD) size deviations for the APC Symmetra PX 80K scalable UPS frame when used with a 208Y/120V, 60 Hz utility source. It provides tables for configuring power modules and output kW ratings based on available power or limited feeder capacity, while noting that 350A is the maximum allowed OCPD per UL listing and that output and bypass OCPDs must include 4-pole neutral switching.