250-Watt Step-Up Transformer (AJSU-250) AMBU-250

$ 199.99


Travel to North America and beyond with your 127-volt electronics.
  • Converts 115 volts to 127 volts
  • Use your Mexican devices in the U.S. and Canada
  • Protected by the Tru-Watts™ guarantee
Traveling can be stressful. One thing you shouldn’t have to stress about? Whether or not your electronics will work. With ACUPWR, you never have to worry. All our Tru-Watts™ products are guaranteed for 120% of their stated wattage and come with a lifetime warranty, so you know that you’ll be able to safely use your 127-volt devices in the U.S., Canada, and beyond.

ACUPWR products are made in the U.S. with high-quality components, including copper wiring, silicon steel cores, and a proprietary thermal protection sensor. We also go above and beyond to bench test our products before shipping to ensure that you’re getting the best possible product. When you need a step-up voltage transformer for your 127-volt electronics, choose ACUPWR. Order today!
  • AC power only
  • Output: Type B (NEMA 5-15R)
  • Input: Type B (5-15P)
How many watts should your voltage transformer be? Check out our wattage recommendations to learn more.

American-Made Quality

The AJSU-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 AJSU-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 AJSU-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 AJSU-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.


Versatility and Dependability

ACUPWR’s AJSU-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 127 volts
Wattage 250 Watts/250 Volt Amps (VA)
Circuit Breaker Thermal protection circuit
Input (Plug) Type Type B
Output (Receptacle) Type Type B (NEMA 5-15R)


Weight 2.5 pounds
Width 2.25 inches
Height 3 inches
Depth 3.5 inches

Customer Reviews

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Customer Reviews

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