TOPOW ST-100 Step Up / Down Transformer (100W)

B&H # TOST100 MFR # ST100
TOPOW ST-100 Step Up / Down Transformer (100W)


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Product Highlights

  • 100W Max. Power
  • 110/120V-220/240V, 220/240V-110/120V

You Pay: $18.63

Questions? Ask our experts:

The 100W ST-100 Step Up / Down Transformer from TOPOW is a voltage converter that steps 110/120V up to 220/240V, or 220/240V down to 110/120V. It is designed for use with appliances or fixtures up to 100W. A European power cord is attached.

UPC: 769981070975
Voltage 110/120-220/240V, 220/240-110/120V
Maximum Wattage 100 W
Certifications CE
Weight Not specified by manufacturer
Packaging Info
Package Weight 3.15 lb
Box Dimensions (LxWxH) 5.6 x 4.8 x 3.9"
TOPOW ST-100 Step Up / Down Transformer (100W)
  • Extra Fuse
  • European to USA Plug Adapter
  • Limited 90-Day Warranty

    by PowerReviews
    TOPOWST-100 Step Up / Down Transformer (100W)

    (based on 1 review)

    Ratings Distribution

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    Reviewed by 1 customer

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    Low cost transformer gets the job done

    By Duchat

    from Park Ridge, NJ

    About Me Pro Photographer

    Verified Buyer


    • Compact
    • Easy to Use


      Best Uses

      • Travel

      Comments about TOPOW ST-100 Step Up / Down Transformer (100W):

      I used this to connect a non-switching 240v British powered subwoofer to US voltage. Product is easy to use, very simple design, and just plain works, as it should do. The inputs and outputs are well labelled and easy to read. The controls allow for a variety of international voltage selections. I would have liked, perhaps, a longer power cord, and an American style plug, rather than the European plug that is built in, but the unit also comes with a European to US style plug adapter, which solves the problem. Unfortunately, such adapters are less secure when connecting them than if the US plug was built in, but for the price, you can't beat it. Much better deal than anything you could buy at a certain well known national chain electronics store, where you get lower wattage units at 3x the price.

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      Plug Adapters

      Watson - APK International Adapter Plug Kit
      • You Pay: $12.55
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