APX Industry's best non-standby cable UPS Output voltage in 63/75/87/89 VAC Output power up to 1350VA Alpha’s APX Series is designed for communication networks that require compact, non-standby power supplies. The APX’s ferro resonant design provides fully regulated output voltage, surge and short-circuit protection. The APX can be easily upgraded by adding modular plug-in options such as a Lightning Arrestor, Time Delay Relay, Ammeter, Status Indicator LED or Amp Clamp™ Surge Suppressor.