Frequency 50/60 Hz Class 1 Built-in suitability up to IP 20 Screw terminals Tread fastening EJ die set Power range 63-2500 VA Safety/Isolating transformer Series FTE (63-250 VA) Control/Isolating transformer Series FST (63-250 VA) Universal control transformer Series SETB (320-2500 VA) Step/ autotransformer Series SFTE/STEBL (1,5-17,5 A) UJ die set Power range 3,2 – 12 kVA Control/Isolating transformer Series SETBL (3,2-12 kVA) Universal control transformer Series USTLB (2,6-3,2 kVA) Other voltage and power on query