5 Amp Variable Transformer, 500 VAC Max, 0-130 Volt OutputInput: 120 volt AC, Output: 0~130 volt AC, 5 amp slow blow fuse VA: 500VA, 5 Amp. Max (surge) A rating of 500VA means that at 100volt, the unit can sustain at maximum 5amp. If at 120 volt the unit can sustain at 4. 1amp WARNING: Most devices have a surge amperage (when first turned on) that is much higher than the device's operating amp rating EXAMPLE: A motor with a 5 amp rating may have over 10 amp surge, and you will need a 10 amp variable