Victron Energy Autotransformer 120/240V 100A Step Up Step Down Split Phase ITR000100102

Victron Energy Autotransformer 120/240V 100A Step-Up Step-Down Split-Phase – ITR000100102

The Victron Energy Autotransformer 120/240V 100A is a versatile power-system component designed for voltage step-up, voltage step-down and split-phase output balancing. Built for demanding AC electrical installations, it provides a practical solution for RV, marine, off-grid, backup power and inverter-based systems that require flexible management of 120V and 240V AC power.

Unlike a conventional isolation transformer, an autotransformer uses a shared winding arrangement to efficiently transform or balance AC voltage. The Victron 100A model is especially useful when integrating equipment with different voltage requirements or improving load balance in split-phase electrical systems.

120V to 240V step-up operation

The Victron Autotransformer can be used to step 120V AC up to 240V AC for compatible equipment and electrical systems. This provides greater flexibility when a 240V load must be supplied from an appropriately configured 120V source.

240V to 120V step-down operation

The transformer can also be configured for 240V to 120V step-down applications, allowing compatible 120V equipment to operate within systems where 240V AC power is available.

Split-phase output balancing

One of the most valuable applications of the Victron Autotransformer is 120/240V split-phase load balancing. In a split-phase system, connected 120V loads may not be distributed evenly between the two legs. The autotransformer can help balance these loads, improving the flexibility and performance of the overall electrical system.

This capability is particularly useful in larger RV, marine, off-grid and inverter installations where both 120V and 240V equipment may be present.

100A autotransformer

This model features a 100A rating, making it suitable for higher-capacity electrical installations requiring substantial AC power handling. It can be incorporated into compatible Victron Energy and other properly engineered AC power systems where step-up, step-down or split-phase balancing is required.

Ideal for inverter and off-grid systems

The Victron 120/240V Autotransformer is well suited for use with compatible inverter-based power systems. It can provide additional flexibility when designing electrical systems around battery banks, inverter/chargers, generators, shore power and other AC power sources.

Key features

• Victron Energy 120/240V Autotransformer
• 100A model
• 120V and 240V AC system applications
• Voltage step-up capability
• Voltage step-down capability
• Split-phase output balancing
• Helps manage unbalanced 120V split-phase loads
• Suitable for inverter-based electrical systems
• Designed for demanding AC power installations
• Useful for RV, marine and off-grid power systems

Technical specifications

• Brand: Victron Energy
• Product: Autotransformer
• Product type: AC Autotransformer
• Manufacturer part number: ITR000100102
• UPC: 8719076066088
• Voltage: 120/240V AC
• Current rating: 100A
• Step-up operation: Yes
• Step-down operation: Yes
• Split-phase balancing: Yes

Recommended applications

• 120/240V split-phase electrical systems
• Off-grid solar power systems
• Battery inverter systems
• Inverter/charger installations
• RV and motorhome electrical systems
• Marine and boat power systems
• Generator-based electrical systems
• Backup power installations
• 120V to 240V step-up applications
• 240V to 120V step-down applications

The Victron Energy Autotransformer 120/240V 100A provides a flexible solution for step-up, step-down and split-phase balancing applications. Whether used to convert between 120V and 240V or help balance loads across a split-phase electrical system, it is a valuable component for properly designed RV, marine, off-grid, backup and inverter-based power installations.