Attributes . 25 kA 220...240 V AC 50/60 Hz IEC 60947-2 || 14 kA 500...525 V AC 50/60 Hz IEC 60947-2 || 18 kA 380...415 V AC 50/60 Hz IEC 60947-2 || 18 kA 440 V AC 50/60 Hz IEC 60947-2 . Names