Cat number: A1044S, A1044L, A1045S, A1045L, A1046S, A1046L, A1047S, A1047L, A1048S and A1048L ANSI class: 57-1S, 57-1L, 57-2S, 57-2L, 57-3S, 57-3L, 57-4S, 57-4L, 57-5S and 57-5L Creepage distance: 356, 559, 737, 1015 and 1143mm Dry arcing distance: 241mm Cantilever strength: 12.5kN Low frequency dry flashover: 110kV Low frequency wet flashover: 85kV Critical impulse flashover, positive: 180kV Critical impulse flashover, negative: 205kV Test voltage to ground: 22kV Maximum RIV at 1000kHz (μV) 1000kHz: 100 Net weight, approximately: 9.5kg Number in standard packing: 3