Seven Star THG 750 UK to 110V AC Voltage Converter 750W – Brand New Old Stock with Minor Cosmetic Marks – Fitted UK Plug and US Style Output
This Seven Star THG 750 unit is brand new and unused but has been stored on our shelves for a long time. As a result, it may show light surface marks or small dents that do not affect performance or safety in any way. For the avoidance of doubt, these marks are cosmetic only and the converter functions exactly as intended.
The THG 750 is a dependable up and down AC voltage converter designed to run 110V appliances safely from a standard UK 220 to 240V mains socket. It comes fitted with a UK three pin plug and features a front US style 110V output socket, making it ideal for powering American equipment in the UK. The unit is solidly built yet manageable at 4.3 kg.
Dimensions, Mounting and Carry Handles
-
Dimensions (handle down): 16 cm (L) × 8.4 cm (W) × 10 cm (H)
-
Dimensions (handle up): 16 cm (L) × 8.4 cm (W) × 14 cm (H)
-
Base plate mounting hole centres: approx. 7 cm (W) × 11 cm (L)
-
Mounting hole size: approx. 5 mm × 10 mm
-
Carry handles: Two stainless steel carry handles that fold down neatly when not in use
Fitted UK mains plug with 110V US style output
The converter plugs directly into any UK wall socket using its fitted UK three pin plug. The front outlet accepts US style 110V plugs, allowing you to connect American appliances without additional adapters.
Voltage selection for UK use
Before switching on, set the red voltage selector on the rear of the unit to:
220V
This provides a safe step down to approximately 110V AC at the front outlet.
Reference image:

Step down and step up capability
-
In 220 to 240V regions: select 220V for step down to 110V AC
-
In 110V regions: select 110V for step up to 220V AC
Typical uses
Suitable for many types of 110V equipment within the 750W rating, including:
- Professional and domestic 110V cleaning equipment
- Power tools and workshop equipment up to 750W
- Electronic devices and small appliances designed for 110V AC
- Imported US equipment used in the UK
Basic instructions for safe operation
- Set the red voltage selector to 220V before plugging the unit into a UK socket.
- Ensure the connected appliance is 110V and does not exceed 750W.
- Plug the converter into a UK mains socket using the fitted UK plug.
- Plug your 110V appliance into the US style output socket on the front.
- Allow space around the unit for ventilation during use.
- Do not use with high demand heating appliances such as heaters or cookers.
- Switch off and unplug the converter when not in use.
Key features
-
Model: Seven Star THG 750
-
Type: Up and down AC voltage converter
-
Input: Selectable 220V or 110V AC (50/60Hz)
-
Output: 110V or 220V AC depending on selector setting
-
Maximum power: 750 watts (VA)
-
Plug: Fitted UK three pin mains plug
-
Outlet: US style 110V socket
-
Weight: 4.3 kg
-
Construction: Sturdy case with two folding stainless steel carry handles
-
Condition: Brand new old stock with minor cosmetic marks
-
Marking: CE marked for UK and European use
The Seven Star THG 750 offers a practical and dependable way to power 110V appliances from a UK mains supply. Although this unit may show light cosmetic marks from long term storage, it is unused, fully functional and excellent value for anyone needing a reliable voltage converter.