What is the cheapest price for the Autotransformer 120/240V-100A?

The lowest current price for the Autotransformer 120/240V-100A is £452.47, compared across 3 UK retailers on Victron for Less.

Is the Autotransformer 120/240V-100A a good price right now?

The 30-day average price for the Autotransformer 120/240V-100A is £418.69. The current lowest price is £452.47, which is at or above the recent average.

Where can I buy the Autotransformer 120/240V-100A in the UK?

You can compare prices from 3 UK Victron retailers on this page. Click "Visit Site" next to any retailer to go to their store directly.

Autotransformer 120/240V-100A Accessory | UK Prices

Autotransformer 120/240V-100A

From £452.47

RRP £342.92

Compared across 3 retailers

120/240V 100A autotransformer for step-up, step-down, and split-phase output balancing with built-in ground relay and manual-reset thermal protection.

SKU: ITR000100101
Dimensions: 425 x 214 x 110 mm
Input/Output Voltage: 120/240V AC
Frequency: 50/60 Hz
Maximum 240V Feed Through: 100A
Neutral Current (30 min): 32A (3800VA)

Price Comparison

Retailer	Price	Availability	Actions
Powerland	£452.47	In Stock	Visit Site
Energy Monkey	£460.31	In Stock	Visit Site
Amazon UK	£539.11	In Stock	Visit Site

Full Specifications

SKU	ITR000100101
EAN	8719076022428
Dimensions	425 x 214 x 110 mm
Input/Output Voltage	120/240V AC
Frequency	50/60 Hz
Maximum 240V Feed Through	100A
Neutral Current (30 min)	32A (3800VA)
Neutral Current (continuous)	28A at 40°C
Input Circuit Breaker	100A two-pole
Transformer Type	Toroidal
Enclosure Material	Aluminium
Protection Rating	IP21
Safety Standard	EN 60076
Ground Relay	Built-in
Thermal Protection	Manual reset

About the Autotransformer 120/240V-100A

The Victron Autotransformer 120/240V-100A provides versatile voltage conversion and split-phase balancing for off-grid and marine power systems. It can step up 120V to 240V, step down 240V to 120V, or balance split-phase loads across two 120V legs. A built-in ground relay ensures proper GFCI operation when used with Multi or Quattro inverter/chargers. The toroidal wound design delivers quiet, efficient operation, while manual-reset thermal protection disconnects the unit if overheating occurs. The 100A two-pole input circuit breaker provides overcurrent protection. As an alternative to stacking two 120V inverters, a single 240V inverter paired with this autotransformer delivers a full 120/240V split-phase supply.