250-Watt Step-Up Transformer (AU-250RF)

$ 279.99


Choose the safest, most reliable step-up voltage transformer for your devices.
  • Converts 110–120 volts to 220–240 volts
  • Made in the U.S.
  • Includes lifetime warranty
Whether you’re traveling with a work laptop full of important data or simply your cell phone, accessing safe and reliable power around the world is key to a smooth and stress-free trip. ACUPWR’s 250-RF step-up transformer is exactly what you need when you’re traveling with 220-volt devices to a country with a 110-volt standard. Our Tru-Watts™ guarantee means you don’t have to worry about investing in more wattage than you need, and a proprietary thermal protection sensor guards you from overload or overheating. Make traveling abroad easier than ever, and order yours from ACUPWR today!
  • AC power only
  • Output: Type B (NEMA 5-15R)
  • Input: Type B
What kind of power cord plug does your device use?
If your equipment uses a Type F plug, then you can order a Type F (Schuko) to Type B plug adapter.
If your equipment uses a Type G, C, J, L, D, or I plug, then check out our universal Type B plug adapter.

How many watts do you need for your international power converter? Find answers with our guide to wattage recommendations.

American-Made Quality

The AU-250 and all ACUPWR voltage transformers are manufactured in the USA with premium components that include copper wiring and silicon steel cores. All of our transformers are assembled by hand, and bench-tested well beyond their stated wattage to ensure safety, reliability, and years of service.


Goes Above Stated Wattage If Needed!

The ACUPWR AU-250 will operate at 120-percent beyond its stated wattage IF NECESSARY, such as in the event of a power surge or inrush voltage. In such an instance, It’s nice to know that that wattage “cushion” is there. Please note that we don’t recommend using an appliance with wattage requirement that is beyond what’s stated on the transformer. (Doing so can void the warranty.)


Thermal Protection

The ACUPWR AU-250 uses a thermal protection circuit instead of fuses. This circuit detects excessive heat caused by an overload. The circuit automatically turns off the transformer and restarts the unit when it has returned to normal operating temperature. 



Lifetime Warranty and Customer Support

The AU-250 and all ACUPWR products come with a lifetime warranty and continuous customer support. We encourage our customers to contact us with any concerns or questions about our products. Our response is timely, courteous, and supportive.


Plug Shapes Not a Problem!

The AU-250 voltage transformer comes with a Type B (NEMA 5-15P) plug and a Type B (NEMA 5-15R) receptacle/output. Nonetheless, nearly all 220-240-volt appliances and electrical devices have a unique plug that correlates with the country they’re designed to be used in. Is this a problem? Absolutely not! ACUPWR manufactures plug adapters that can turn any plug type (there are more than a dozen) into a Type B plug.


Versatility and Dependability

ACUPWR’s AU-250 and all of our voltage transformer models can be used in any interior setting and environment, whether it’s your bedroom, a garage, a manufacturing space… wherever. They’re built like tanks and can handle dust, heat, and moisture, and they’ll keep chugging along—quietly!—under heavy duress.

Electrical Details

Voltage Conversion 110-120 volts to 220-240 volts
Wattage 250 Watts/250 Volt Amps
Circuit Breaker Thermal protection circuit
Input (Plug) Type Type B (NEMA 5-15P)
Output (Receptacle) Type Type B (NEMA 5-15R)


Product Weight 4.5 pounds
Shipping Weight 6.0 pounds
Product Width 4.75 inches
Product Height 4.5 inches
Product Depth 4 inches


Customer Reviews

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Customer Reviews

Based on 3 reviews Write a review