The SX1120RTTAA provides guaranteed surge protection and power conditioning for audio, video, broadcast and computer equipment. The units are 20-amp load-capable and have 8 industrial grade grounded AC receptacles (6 switched, 2 always on) plus a front panel courtesy receptacle. The unit features both common mode and normal mode Impedance Tolerant EMI/RFI filtering, SurgeX ICE -Inrush Current Elimination and COUVS -Catastrophic Over/Under Voltage Shutdown for a complete power conditioning solution. SurgeX Advanced Series Mode technology is superior to conventional MOV circuitry or MOV-Hybrid designs and is completely non-sacrificial. Our zero let-through technology provides the most reliable protection available. It stops all surges up to 6,000 volts (unlimited surge current) without producing harmful side effects such as ground contamination or common-mode disturbances.