Balance Split-Phase Power and Convert Voltage with a 120/240V 100A Autotransformer

The Victron Autotransformer 120/240V 100A provides a versatile solution for voltage conversion, split-phase load balancing and generator integration in marine, RV and off-grid power systems. It can be used to step up or step down between 120V and 240V AC, while also balancing uneven loads across split-phase systems to maximise available power. An integrated ground relay makes it compatible with Victron Multi and Quattro inverter/chargers, while built-in temperature protection and a toroidal transformer design ensure reliable operation in demanding environments.

Key Features

• 100A Split-Phase Autotransformer: Supports high-current 120/240V AC systems for demanding marine, mobile and off-grid applications.
• Step-Up and Step-Down Voltage Conversion: Converts between 120V and 240V AC to suit different shore power, generator and inverter configurations.
• Split-Phase Load Balancing: Balances unequal loads across both 120V legs, helping maximise the usable capacity of split-phase power supplies.
• Compatible with Multi and Quattro Inverter/Chargers: Includes an integrated ground relay specifically for use with compatible Victron inverter/chargers operating in inverter mode.
• Generator Load Balancing: Assists with balancing split-phase generator loads to improve utilisation of available generator capacity.
• Toroidal Transformer Design: Low-noise, lightweight toroidal transformer construction delivers efficient and reliable operation.
• Integrated 100A Circuit Breaker: Includes a two-pole input circuit breaker for simplified installation and electrical protection.
• Temperature Protection: Automatically disconnects the transformer if overheating occurs, with manual reset once safe operating temperature is restored.
• Alternative to Stacked Inverters: Enables efficient split-phase power distribution without requiring two stacked 120V inverter systems.
• Marine and Off-Grid Ready: Suitable for generators, inverter/chargers, shore power systems and other 120/240V AC installations.

The Victron Autotransformer 120/240V 100A provides flexible voltage conversion and split-phase balancing to improve the performance of high-capacity AC power systems. Its integrated protection and compatibility with Victron inverter/chargers make it suitable for demanding marine and off-grid installations.