Input: 120 volt AC, Output: 0~130 volt AC, 3 Amp Slow Blow Fuse
Max VA: 300VA, 3 Amp. Max (surge)
A rating of 300VA means that at 100volt, the unit can sustain at maximum 3amp. If at 120 volt the unit can sustain at 2.5amp
Note that most device have surge (when first turn on) much higher than operating amp rating
E.g., motor with 3 amp rating may have over 5 amp surge, and you will need 5 amp variac