... the function of protecting from over-load short circuits. Specifications: Isolator Switch1) Rated voltage: a) 1 pole: 250V b) 2 ... , 3, 4 pole: 415V 2) Rated current of trips: 16, 20, ... 32, 40, 63, 100A 3) Compliance with standard: IEC408, IEC609-1, BS5419, VDE0660