SKU: 64950578846

Victron Autotransformer - Split Phase 120/240V - 100AMP

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Description

Victron Autotransformer - Split Phase 120/240V - 100AMPAutotransformer Split Phase 120 240V 100AMP The Autotransformer: for step up, step down and split phase balancing An autotransformer can be used for step up, step down and split phase output balancing purposes. While the step up and step down functions are fairly straightforward, split phase output balancing may require some more attention. Consider for example a 30A 120 240V split phase supply. The supply could be the grid, a generator or two stacked

Autotransformer - Split Phase 120/240V - 100AMP

The Autotransformer: for step up, step down and split phase balancing An autotransformer can be used for step up, step down and split phase output balancing purposes. While the step up and step down functions are fairly straightforward, split phase output balancing may require some more attention. 

Consider for example a 30A 120/240V split phase supply. The supply could be the grid, a generator or two stacked inverters. Some of the loads connected are 240V, others are 120V. On each 120V leg the load should not exceed 30A. The problem is that as soon as 120V loads are connected, the two legs will show a different current. This is because the 120V loads on the two legs will never be balanced. A 120V 1200W hairdryer, for example, will draw 10A from one leg. A 120V washing machine could even draw in excess of 20A from one leg. Between the two legs the difference in current, or current unbalance, will therefore often be 20A or more. This means that the 30A supply will not be used up to its full potential. By the time one leg draws 30A, the other leg may be drawing no more than 10A, and increasing the 240V load, for example, will result in an overload of one leg while the other leg still has spare capacity. Theoretically, the total power that can be drawn from a 30A 120/240V supply is 30 x 240 = 7,2 kVA. In case of 20A unbalance, the practical maximum will be 30 x 120 + 10 x120 = 4,8kVA, or 67% of the theoretical maximum. The solution is an Autotransformer. By leaving the neutral of the split phase supply unused, and connecting an Autotransformer to create a new neutral, as shown in figure 1, any load unbalance is ‘absorbed’ by the Autotransformer. In case of a 30A supply, the load can be increased to 7,2kVA, and a 20A load unbalance will result in one leg supplying 40A, and the other leg 20A. The 20A difference will flow through the neutral and the windings of the Autotransformer. The current through both 120V wires of the split phase supply will be 30A. 

Temperature protected In case of overheating, the Autotransformer is disconnected from the supply. Reset is manual. Ground relay for use with Multi or Quattro Inverter/Chargers included When operating in inverter mode, the neutral output of the inverter/charger must be connected to ground to guarantee proper functioning of a GFCI. In case of a split phase supply the neutral must be grounded. For this purpose a grounding relay is built in the autotransformer’s enclosure. The relay is controlled by the 230/240V Multi or Quattro. (The internal grounding relay in the 230/240V Multi or Quattro must be disabled) 

An alternative to stacked inverters The alternative to stacking two 120V inverters to provide a 120/240V split phase supply is a 240V inverter with an additional Autotransformer.

Warranty Info

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Please contact your dealer for any returns, repairs or support issues related to this product.

Specifications:

  • Amperage: 100a
  • Box Dimensions: 8"H x 13"W x 20"L WT: 30.55 lbs
  • UPC: 8719076022428

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SKU: 64950578846

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Subtle, pleasant scent. Very creamy and moisturizing. Use on face and neck for months and have purchased multiple times. Leaves skin feeling hydrated, not greasy.
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★★★★★ 5
Pure, non toxic, and it really works!
I just got this and it is amazing! I am 56 and my skin that used to be oily is now like fish scales even using a shower water filter. I have been using oils and they do not help. I know now that oil just helps retain moisture but post menopause skin needs to be hydrated. One application and my skin is glowing and silky again and there is no strong scent. Amazing, pure, and fairly priced product! Will be continuing to use this. I only wish it came in an 8-12oz size but I just ordered two.
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carissa
San Leandro, US
★★★★★ 4
Overall really good product
Melts into your skin. My skin clears up much faster after a breakout. Smells good (in my opinion). Love the glass jar. I got it mid August and still have about a months supply left so it last awhile and I use morning and night. A little goes a long way. Skin always looks better when I wake up. My only complaint is if I don’t let this soak in for a bit before going outside or being active it sweats out really bad.
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Reviewed in the United States on November 19, 2025
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Tammy
Carnegie, US
★★★★★ 5
Good hydration
Great product I really like the hydration this gives my face and not greasy, I haven't used others but don't need to try as this is ideal, I will use on my hands also very nice product.
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Reviewed in the United States on May 29, 2026
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Christine Boyd George
Grantham, US
★★★★★ 5
I use this every day on my face and body
I have this in my subscriptions because it works so well and makes my skin feel so soft. It's a very good quality product but it is whipped. I didn't know that till it first came
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Reviewed in the United States on May 20, 2026

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