400 Watt USA/Canada to Japan Step Up Transformer – Use 110-120 Volts Appliances in Japan AJU-400


ACUPWR’s AJU-400 model is a grounded step up transformer that converts voltage from the 100 volts standard used in Japan to 110-120 volts, allowing you to use your USA/Canada appliances in Japan.

Please note: The AJU-400 is for using appliances that run on the 110-120 volts standard (USA and Canada) in Japan only. ACUPWR manufactures other step up voltage transformers/converters (with similar wattage loads) that can be used for other countries and regions, such as the AU series (110-120 volts up to 220-240), the AJSU series (110-120 volts up to 127-130 for using appliances made for use in Mexican and Brazilian in the USA and Canada), and the AUD series combination step up/step down model (110-120 volts up to 220-240 and from 220-240 volts down to 110-120).

  • Made for home, commercial, and industrial use
  • Converts voltage from 110-120 volts to 100 volts
  • Allows appliances running on 110-120 volts to be used in Japan
  • Compatible appliances include stereo systems, electronic gaming devices, window fans, hand mixers, and much more (please refer to our transformer guide).
  • ACUPWR products are trusted by military, NASA, and government agencies worldwide
  • Can handle up to 120 percent wattage beyond stated rating (industry standard is only 50 percent)
  • Proudly made in the USA
  • Rated at 400 watts
  • Type B plug and NEMA 5-15R input
  • CE approved
  • 3 lbs; Dimensions (W x H x D): 2.5” x 3” x 4”
  • Lifetime warranty, up to $10,000 damage coverage
  • Bench tested for quality assurance and years of reliability

This model is rated for 400-watt loads and suitable for home, commercial, and industrial applications. Compatible appliances include stereo systems, electronic gaming devices, window fans, hand mixers, and much more (please refer to our transformer guide). The AJU-400 comes with a grounded Type B wall plug and a NEMA 5-15R (input) recepticle for up to 15 amps maximum power. Although Japan’s 100 volts are only slightly lower than the 110-120 volts used in the USA and Canada, the difference is particularly noticeable when using electronic devices.

As with all ACUPWR products, the AJU-400 is proudly manufactured in the USA using the best materials available. This includes copper wiring that allows the AJU-400 to operate under heavy duress, and in the most heavy-duty situations. Unlike less expensive, foreign-made products using aluminum wiring, our products are designed to last for decades. Each unit is hand assembled in our factory and bench-tested at a full-load (the maximum stated wattage) to ensure years of dependability. 

ACUPWR stands by its products by providing a lifetime warranty and damage coverage up to $10,000. We count military and government agencies, including NASA’s Goddard Space Flight Center, among our customers for good reason: ACUPWR products are the best-made, most dependable, and most long-lasting transformers available.

When considering which model ACUPWR transformer/voltage converter is best for your needs, keep in mind that our products are safe for continuous power at 120 percent beyond the stated wattage, unlike other products that adhere to an industry standard of 2-3 times higher than the appliance’s stated wattage. So, for example, an appliance rated for 300 watts of consumption would, according to the industry standard, require a 900-watt transformer. With an ACUPWR transformer, you can safely use your 300-watt appliance with a 300-watt transformer/converter; our products, remember, can handle 120-percent beyond their stated wattage handling ability.

ACUPWR recommends that you purchase our Global Surge Protector to protect your appliances from voltage spikes. Additionally, our Global Surge Protector allows you to plug in up to 6 appliances using any plug type, thus ensuring its use anywhere in the world. We also highly recommend our voltage stabilizers/line conditioners, in countries where the line voltage is particularly unstable.

Don’t see what you’re looking for? We’ll make a customized voltage transformer specifically for your needs. Call us at 212-380-1191 to discuss further.

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