Energy Solutions
IsoBoost3 7 kVA/32A hull isolation transformer (US/Euro)
£7,386.00
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IB3-07KVA-120/240-INT
7kVA/32A international hull isolation transformer that prevents galvanic corrosion and boosts weak shore power supplies.
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Collection or delivery in 1-2 weeks
Pickup available at Mercury Yacht Harbour
Usually ready in 2-4 days
Description
The Energy Solutions IsoBoost3 is a hull isolation transformer that protects your vessel from galvanic corrosion while safely delivering shore power to the onboard electrical system. It breaks the earth connection on the incoming shore supply and induces power onto a fully isolated secondary winding, so there is no direct electrical connection between the dock cable and the boat wiring. Built as a double wound transformer to BS EN 60076-1, it carries a protective screen between the input and output windings and soft starts automatically to stop inrush current tripping the marina supply breaker.
This international version auto-selects between 120V and 240V supplies with a 220V boost tap, so a single unit can be used across different shore standards worldwide. When the input is in range it runs in 1:1 mode so the output matches the input, and if the voltage falls below the boost threshold it automatically switches into boost mode to raise the output, returning to 1:1 when the supply recovers. A built in digital power meter with Modbus communication monitors voltage, frequency, current, power factor, energy use, harmonics and alarms, with an optional remote display, and the IsoBoost3 is a fit and form replacement for Charles Industries IsoBoost transformers.
PRODUCT DETAILS
- 7 kVA / 32 A international (US/Euro) hull isolation transformer
- Auto-selects 120V or 240V supplies with a 220V boost tap for worldwide use
- Prevents galvanic corrosion by isolating the shore earth from the vessel
- Automatic boost mode compensates for volt drop on weak shore supplies
- Double wound to BS EN 60076-1 with a screened primary and secondary
- Automatic soft start prevents inrush tripping the marina breaker
- Built in digital power meter with Modbus RTU and optional remote display
- Fit and form replacement for Charles Industries IsoBoost transformers
No exploded diagram available for this product.
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Key specifications
| Type | Hull isolation transformer with boost |
| Rated capacity | 7 kVA |
| Rated current | 32 A |
| Specification | International (US/Euro) |
Electrical
| Input voltage | 120V / 240V automatic select, plus 220V boost tap |
| Output voltage | 240V nominal |
| Frequency | 50/60Hz (dual frequency, no conversion) |
| Boost mode | Automatic boost for international operation |
| Isolation | Double wound to BS EN 60076-1, screened windings |
| Metering | Digital power meter with Modbus RTU |
Physical & mechanical
| Weight | 104 kg |
| Enclosure | Powder coated steel, RAL9016 traffic white |
| Input wiring | 3 wire (earth and two conductors) |
| Output wiring | 3 wire or 4 wire options |
General
| Compatibility | Fit and form replacement for Charles Industries IsoBoost |
| Country of origin | United Kingdom |
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What does an isolation transformer do for my boat?
It breaks the earth connection between the marina shore supply and your vessel, removing the galvanic loop that causes accelerated corrosion of the hull, anodes and underwater fittings. The transformer induces power onto a fully isolated secondary winding, so shore power reaches the boat with no direct electrical connection to the dock earth.
Why is this called the international version?
The international IsoBoost3 automatically selects between 120V and 240V shore supplies and includes a 220V boost tap, so one unit can operate across different regional shore power standards. This makes it well suited to vessels that cruise between US, European and other supply areas.
Can the IsoBoost3 replace a Charles Industries IsoBoost transformer?
Yes. The IsoBoost3 is designed as a fit and form replacement for Charles Industries IsoBoost transformers, so it suits vessels originally specified with that unit. Choose the rating and specification to match your shore supply and switchboard.
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