Victron Autotransformer 120/240VAC- 32A
Resolve Split-Phase Imbalances with Integrated Ground Relay Protection
DESCRIPTION
Victron 32A Autotransformer: Step-Up, Step-Down and Split-Phase Balancing
The Victron Autotransformer 120/240VAC 32A is an essential component for complex power systems requiring step-up, step-down, or split-phase output balancing. Designed to seamlessly integrate with advanced energy setups, this transformer ensures optimal utilisation of your power supply, whether you are operating from the grid, a generator, or an inverter.
Master Split-Phase Output Balancing
While step-up and step-down functions are straightforward, managing a split-phase power supply requires careful load balancing. Consider a 30A 120/240V split-phase supply powering both 240V and 120V loads. Because 120V loads are rarely distributed evenly across both legs, a severe current imbalance can occur. For instance, a heavy 120V load on one leg could draw 20A, while the other leg draws only 5A. This imbalance significantly restricts the overall capacity of your system, as one leg may overload while the other remains underutilised.
The Victron 32A step up transformer and balancer solves this issue. By connecting the autotransformer to create a new neutral, any load unbalance is absorbed. In the scenario of a 30A supply, the load difference flows through the neutral and the transformer's windings, allowing the system to operate at its full theoretical capacity without bottlenecking a single 120V leg.
A Smarter Alternative to Stacked Inverters
When designing a 120/240V split-phase system, using a single 240V inverter paired with a Victron autotransformer is often more efficient than stacking two 120V inverters. If you stack two 3kVA 120V inverters, each leg is strictly limited to its individual capacity (e.g., 25A). If the load on one leg is low, that spare capacity cannot be transferred to the other leg.
By contrast, pairing a single 5kVA 240V inverter with this 32A autotransformer supplies balanced load to each 120V leg while allowing spare capacity to cross over. If one leg has minimal load, the other leg can draw significantly more power, up to a maximum unbalance of 32A. This configuration is highly recommended for systems where uneven loads are expected.
Integrated Ground Relay for Seamless Integration
Safety is critical in off-grid and mobile power systems. When operating in inverter mode, the neutral output must be connected to earth to ensure the proper functioning of earth leakage devices like a GFCI or RCD. For split-phase supplies, the neutral must be explicitly grounded. To accommodate this, the Victron autotransformer features a built-in grounding relay that is directly controlled by your 230/240V Multi or Quattro inverter/charger, ensuring compliance and safety without complex external wiring.
Robust Hardware and Thermal Protection
Housed in a durable, powder-coated metal chassis with integrated rear wall-mounting brackets, this unit is built for longevity. The base features a central cooling fan for active thermal management, alongside M25 cable glands for secure, weather-resistant electrical connections. To protect your system, the unit includes temperature protection that will automatically disconnect the supply in the event of overheating, requiring a manual reset via the front-access circuit breaker once safe temperatures are restored.
Key Features
- Flexible voltage control: Reliable step-up, step-down, and split-phase balancing.
- High capacity balancing: Absorbs up to 32A of load unbalance to maximise inverter or generator output.
- Integrated ground relay: Designed for seamless use with Victron Multi and Quattro inverter/chargers.
- Thermal protection: Auto-disconnect on overheating with a simple manual reset circuit breaker.
- Clear diagnostics: Front panel status LEDs for power, ground relay state, and temperature.
- Durable construction: Robust powder-coated enclosure with M25 cable entries and a dedicated earth stud.
Maximise Your Power System Efficiency
Upgrade your electrical architecture with robust load balancing and voltage management. Integrate the Victron Autotransformer 120/240VAC 32A into your setup today to ensure stable, efficient, and safe power distribution across all your critical loads.
SKU: VIC-ITR000100001
SPECIFICATIONS
Specifications
| Part Number | ITR000100001 |
|---|---|
| Input/Output Voltage | 120 / 240 V |
| Input Circuit Breaker | 32 A, Two Pole |
| Frequency | 50/60 Hz |
| Maximum 240 V Feed Through Current | 32 A |
| Neutral Current, 30 Min | 32 A (3800 VA) |
| Neutral Current, Continuous | 28 A @ 40 °C / 100 °F |
| Transformer Type | Toroidal |
| Enclosure | Aluminum |
| Electrical Terminals | Screw Terminals 35 mm² / AWG 2 |
| Protection Category | IP21 |
| Safety | EN 60076 |
| Weight | 12.5 kg |
| Dimensions (H x W x D) | 425 x 214 x 110 mm |
| SKU: | VIC-ITR000100001 |
| Barcode: | 8719076022404 |
| Model #: | ITR000100001 |
| MPN: | ITR000100001 |
WARRANTY
Victron Energy Limited Warranty Policy
Victron Energy warrants its products to be free from defects in workmanship and materials for a period of 5 years from the date of purchase by the end user, with a maximum of 66 months from the Victron Energy invoice date. Exceptions on this are: lead acid batteries; 2 years from date of purchase by the end user, with a maximum of 30 months from the Victron Energy invoice date, Lithium-ion batteries; 3 years from date of purchase by the end user. In addition to this proof of correct battery usage is required when making a battery warranty claim.
During this period, Victron Energy will, at its option, repair or replace the defective product free of charge. The warranty does not include performing or reimbursing de‐installation, transportation and re‐installation. This warranty will be considered void if the unit has suffered any physical damage or alteration, either internally or externally, and does not cover damages arising from improper use like: • Reverse of battery polarity. • Inadequate connection. • Mechanical shock or deformation. • Contact with liquid or oxidation by condensation. • Use in inappropriate environment (dust, corrosive vapor, humidity, high temperature, biological infestation...). • Breakage or damage due to lightning. • Connection terminals and screws destroyed or other damages, like overheat, due to insufficient tightening. • For any electronical breakage except due to lightning (reverse polarity, over‐voltage due to external cause), the state ofthe internal control diode and of the inputs/output X and Y capacitors determine the warranty.
This warranty will not apply where the product has been misused, neglected, improperly installed, or repaired by anyone else than Victron Energy or one of its authorized Qualified Service Partners. In order to qualify for the warranty, the product must not be disassembled or modified.
Repair or replacement are our sole remedies and Victron Energy shall not be liable for damages, whether direct, incidental,special, or consequential, even caused by negligence or fault.
Victron Energy owns all parts removed from repaired products. Victron Energy uses new or reconditioned parts made by various manufacturers in performing warranty repairs and building replacement products. If Victron Energy repairs or replaces a part of a product, its warranty term is not extended. In case of replacement the new component has a warranty of 6 months, without effect on the initial warranty period. All remedies and the measure for damages are limited to the above. Victron Energy shall in no event be liable for consequential, incidental, contingent orspecial damages, even if having been advised of the probability of such damages. Any and all other warranties expressed or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited in duration to a period of two (2) years from the date of purchase.
Life Support Policy As a general policy, Victron Energy, does not recommend the use of any of its products in life support applications where failure or malfunction of the Victron Energy's product can be reasonably expected to cause failure of the life support device or to significantly affect its safety or effectiveness. Victron Energy does not recommend the use of any of its products in direct patient care. Victron Energy will not knowingly sell its products for use in such applications unless it receives in writing assurances satisfactory to Victron Energy that the risks of injury or damage have been minimized, the customer assumes all such risks, and the Liability of Victron Energy is adequately protected under the circumstances.
As a product requires service, it must be brought back to the place of purchase. In case no contact can be taken with the merchant, or if he is either unable or not allowed to provide service, direct contact should be taken with Victron Energy.
Warranty on Repairs The warranty period on products or on printed circuits boards repaired by Victron Energy as well as on printed circuit boards for replacement is 6 months from delivery by Victron Energy.
Transport It is the responsibility of the sender to sufficiently package these products. The transport must be organized in a way to avoid any damage, especially when a single unit or heavy unit is sent.
Severability If a part of the terms and conditions set out above is held invalid, void or unenforceable due to any particular national or international legislation, it shall not affect other parts of the terms and conditions remaining.
For Australia only Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
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