ASCO Model 485 Surge Protective Device
120–600 VAC | 600–900 kA/Phase. The ASCO Model 485 Surge Protective Device is our largest, highest kA (SPD). The Model 485 utilises two separate, dual redundant replaceable modules that work in parallel. It features large block, 50 kA thermally protected MOVs with surge current levels of 600–900 kA per phase. This unit is for "mission-critical" environments.