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Description
Mastervolt Mass Gi 7 Isolation Transformer (7,000 VA @ 230 V)Mastervolt Mass GI 7 is a modern day galvanic isolation transformer, featuring high frequency electronic switch technology. It is designed to sit beween shore power and the on board power to prevent electrical corrosion of metal parts that can occur without this protection. The Mass GI isolation transformer is compact and lightweight, and is housed in a robust aluminium casing. It can be installed easily on a wall or floor, and the unit does not
Mastervolt Mass GI 7 is a modern day galvanic isolation transformer, featuring high frequency electronic switch technology. It is designed to sit beween shore power and the on board power to prevent electrical corrosion of metal parts that can occur without this protection. The Mass GI isolation transformer is compact and lightweight, and is housed in a robust aluminium casing. It can be installed easily on a wall or floor, and the unit does not vibrate or hum so will not require rubber mountings. It can aslo be controlled remotely via MasterBus. The Mass GI has a soft start function, which suppresses the inrush current from the transformer to prevent the power fuse blowing. They are also highly efficient, and can be used in parallel to increase the AC power capacity. General specifications Output voltage (� 5 %): 90-255 V Output frequency range: 45-65 Hz Input voltage range: 90-255 V Input frequency range: 45-65 Hz Nominal input current (230 V): 32 A Galvanic isolation: yes Efficiency: > 93 % Power 230 V (120 V): 7000 VA (3840) VA Dimensions, hxwxd: 340 x 261 x 250 mm (13.4 x 10.3 x 9.8 inch) Weight: 10 kg (22.0 lb) Compliance: CE, ABYC Technical specifications Technology: high frequency Earth leakage protection: no No-load power consumption: 44 W Temperature range (ambient temp.): 0 C to 40 C, derating power > 40 C (32 F to 104 F) Cooling: variofan Switch off at: 80 C Protection degree: IP23 Operating humidity: max. 95 % Switch off behaviour breaker: B-characteristic Soft start: yes MasterBus compatible: yesShipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.1 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Great price for a great product
Color: Coal Black
Excellent quality and great price to boot. Easy to assemble and folds up easily to be stored. We are using it as a privacy screen when we have company that needs to sleep on the couch and also to block off a hallway leading to a guest suite. It looks great and is as described in the ad
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Reviewed in the United States on December 16, 2025
★★★★★ 1
No.
Color: Coal Black, Color: Coal Black
This was horribly made and a nightmare to put together. You have to basically bend the bars to get the coverings attached. The sizes don't match. The stickers that label the parts are impossible to remove and if you do get them off theres a lot of residue left behind. On top of that once it was put together I noticed theres a big dirty foot print on it which is definitely not mine.
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Reviewed in the United States on January 5, 2026
★★★★★ 3
You have to add weight to it
Color: Coal Black
It does its job and it was easy to put together but it's a little on the flimsy side and it will easily be knocked down. So you're going to have to figure out a way to make the legs heavier? I used cinder blocks, single cinder blocks and it works just fine. Just know that it will knock over super easy
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Reviewed in the United States on January 22, 2026
★★★★★ 5
The snap to put them together.
Color: Coal Black
This came in handy in the foyer. I didn’t want to see the door from my couch. I must be weak found it hard to snap them together. I kept 2 my daughter took the other 2.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
I have 2!
Color: Coal Black
My office is in my loft. But there are things along the wall I don’t want to look at. These work great. Hides what I don’t want to see & is a classy look in the room. Sturdy, easy to assemble, well made.
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Reviewed in the United States on May 31, 2026
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