• Description

Mass GI 7 Isolation Transformer 7KW

A safe connection between the vessel and the shore installation is an essential part of your electrical system. A galvanic electrical isolation between shore power and the on-board power prevents any electrical corrosion of metal parts while keeping you earthed.

Features:

  • Ultra-modern high-frequency electronic switch technology.
  • Lightweight and compact.
  • Integrated Soft Start function.
  • Connect to voltages from 90 to 255 V and from 45 to 65 Hz.
  • Units can be parallel-coupled for higher capacity.
  • Higher efficiency, limited heat development.

Modern transformer technology: Light, silent, reliable, and easy - The Mass GI is supplied with the latest high-frequency switching technology as well as Soft Start for peak loads when connecting to the grid. LED lights on the casing indicate load and overload. The transformer can be remote-controlled. The Mass GI is 75 % lighter and 60 % smaller than a low-frequency transformer.

Higher capacity via parallel switching - Parallel switching of the Mass GI units increases the AC power capacity. Two 16 A/3.5 kW units ensure 32 A/7 kW; four units give 64 A/14 kW.

Install anywhere - With its robust aluminium casing, this isolation transformer can be fitted in any position on the wall or floor. No rubber mountings are necessary because the unit does not vibrate or hum. The Mass GI also features professional connections with strain relief cable glands.

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

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.
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Feedback From Our Customers

At Green Vista Living, we pride ourselves on delivering top-quality products and exceptional service to solar professionals and homeowners alike. Here's what our customers have to say about their experiences with us.

Kevin Leary
May 18, 2025
★★★★★

Incredible Tech Support from Anees of Green Vista Living. Exceptional service and went above and beyond on every question.

Bryan Cunningham
Off grid Kit • Dec 21, 2025
★★★★★

Shipment was slow due to high demand, but the team kept me informed and ensured everything arrived properly.

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