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Victron 200–250VAC 5kVA Single Phase Automatic Transfer Switch
Victron 200–250VAC 5kVA Single Phase Automatic Transfer Switch
IP54 20A Automatic AC Transfer for Caravans, RVs, and Marine Systems
Key features: IP-rated weatherproof enclosure, Clear protective viewing window, Three heavy-duty cable glands for secure entry, Compact wall-mountable housing.
Highlights:Main Contactor: Heavy-duty contactor for reliable power switching between sources,Terminal Blocks: Colour-coded terminals for phase and neutral connections,Circuit Identification: Clear labelling for primary input, secondary input, and output,Compression Glands: Bottom-entry cable glands for strain relief and moisture protection. 
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DESCRIPTION
Victron VE Transfer Switch 5KVA: Automatic AC Source Selection for Mobile and Off-Grid Power Systems
Seamless Power Transfer for Caravans, RVs, and Marine Applications
The Victron VE Transfer Switch 5KVA provides reliable, automatic switching between two independent AC power sources, ensuring uninterrupted supply to your essential loads. Designed for single-phase 200-250V systems, this unit is a critical component in modern caravan inverter installations, RV power management, and marine electrical systems where shore power and onboard generation must coexist without manual intervention.
Unlike generic changeover switches that require physical operation, the VE Transfer Switch monitors the primary input and transfers to the secondary source within milliseconds when voltage is lost or falls outside acceptable parameters. This eliminates the risk of dropped loads, protects sensitive electronics from abrupt power interruptions, and simplifies system design for installers and end-users alike.
Engineered for Demanding Mobile Environments
Housed in a robust IP54-rated enclosure, the VE Transfer Switch withstands dust, moisture, and vibration typical of off-road caravan setups and coastal marine installations. The compact 175 x 215 x 120 mm footprint and 1.85 kg weight allow flexible mounting in confined equipment bays, while the clear protective viewing window enables quick visual status checks without opening the enclosure.
Three heavy-duty cable glands provide secure, strain-relieved entry for input and output wiring, maintaining the IP54 integrity even in high-humidity or washdown environments. Internally, colour-coded terminal blocks and clear circuit identification labels reduce installation time and minimise wiring errors, a practical advantage over unbranded alternatives that often lack such installer-friendly details.
Key Features
- Automatic source selection between shore power, generator, or inverter with no user intervention required
- Fast transfer time of 10-20 ms (closing contacts) and 5-20 ms (opening contacts) to keep sensitive loads online
- Adjustable input delay (approx. 10 seconds) prevents nuisance switching from transient voltage fluctuations
- Integrated auxiliary contact (200-240V AC, 20A) for remote signalling or control of external devices
- IP54 weatherproof enclosure with clear viewing window and secure cable glands for harsh environments
- 20A nominal current rating per input and output, supporting up to 1.3 kW motor loads such as air-conditioners
- Low standby consumption of only 6 VA on the primary input, preserving battery capacity in off-grid systems
Reliable Power Management Without Compromise
In typical caravan solar installations, the VE Transfer Switch sits between the inverter/charger and the AC distribution board, automatically selecting shore power when available and reverting to inverter output when disconnected. This eliminates the need for manual changeover switches that can be forgotten, leading to flattened batteries or tripped circuit breakers. For generator-backed systems, the switch ensures the generator only runs when shore power is absent, reducing fuel consumption and runtime hours.
The unit’s 20A continuous rating per input makes it suitable for most single-phase caravan and small marine applications, while the 1.3 kW maximum motor load accommodates rooftop air-conditioners and other inductive loads without contactor welding or premature failure. Unlike some budget transfer switches that use undersized relays, the Victron design employs a heavy-duty contactor rated for frequent operation, contributing to long service life in daily-use scenarios.
Installation Flexibility and System Integration
The VE Transfer Switch integrates seamlessly with Victron MultiPlus and Quattro inverter/charger systems, but its standalone operation also suits third-party inverters and generators. The adjustable input delay allows installers to fine-tune the switchover timing to match generator warm-up periods or inverter start-up sequences, preventing unnecessary cycling. An auxiliary contact provides a volt-free signal that can trigger remote alarms, start generators, or interface with monitoring systems such as the Victron Cerbo GX.
Why Choose the Victron VE Transfer Switch?
Generic automatic transfer switches often lack the environmental protection, documentation, and support expected in professional installations. The Victron VE Transfer Switch addresses these gaps with an IP54-rated enclosure, clear internal labelling, and comprehensive technical documentation. This reduces installation time, callbacks, and long-term reliability risks, particularly in mobile applications subject to vibration and temperature extremes.
With an operating temperature range of -5 °C to +60 °C and 95% non-condensing humidity tolerance, the switch performs reliably across Australia’s diverse climates, from tropical coastal regions to arid outback conditions. The RAL 7035 light-grey finish minimises solar heat absorption, further enhancing thermal performance in exposed mounting locations.
Upgrade Your Power System with Confidence
Whether you are building a new caravan electrical system, retrofitting an RV with inverter-charger capability, or designing a marine AC distribution panel, the Victron VE Transfer Switch 5KVA delivers the automatic, worry-free source selection that modern mobile lifestyles demand. Add this essential component to your installation today and experience the reliability that Victron Energy is known for worldwide.
SKU: VIC-COS230502100
SPECIFICATIONS
Specifications
| Nominal Voltage | 200 - 250 Vac, single-phase |
|---|---|
| Nominal Frequency | 50 - 60 Hz |
| Nominal Current Input 1 | 20 A |
| Nominal Current Input 2 | 20 A |
| Nominal Output Current | 20 A |
| Maximum Electromotor (Air-Conditioner) Power | 1.3 kW |
| Power Consumption Input 1 | 6 VA |
| Power Consumption Input 2 | 0 VA |
| Transfer Time by Closing Contacts | 10 - 20 ms |
| Transfer Time by Opening Contacts | 5 - 20 ms |
| Contacts Delay Input 1 | Approximately 10 s (adjustable) |
| Auxiliary Contact | 200 - 240 Vac, 20 A, cos phi = 1 |
| Operating Temperature | -5 °C to +60 °C |
| Maximum Humidity (Non-Condensing) | 95% |
| Miniature Circuit Breaker (MCB) | Not included - installation dependent |
| Earth Leakage Breakers (RCD) | Not included - installation dependent |
| Protection Category | IP 54 |
| Colour | RAL 7035 |
| Dimensions (mm) | 175 x 215 x 120 |
| Weight (kg) | 1.85 |
| SKU: | VIC-COS230502100 |
| Barcode: | 8719076022091 |
| Model #: | COS230502100 |
| MPN: | COS230502100 |
WARRANTY
Victron Energy Limited Warranty Policy
Direct Customers
Victron Energy provides the following warranty to any direct customer (OEM, distributor or dealer) in relation to any products that Victron Energy has directly sold to the direct customer. This warranty is not an end-user warranty between Victron Energy and an end-user, and end-users shall not have any rights or remedies under this limited warranty towards Victron Energy directly. The direct customer shall, in turn, ensure that the end-user is provided with a warranty identical to this warranty, subject to applicable local mandatory law.
End-Users
Victron Energy may also provide a warranty directly to end-users, in which case the below warranty conditions equally apply to such warranty. In that case, end-users shall claim their warranty at their place of purchase or through the original direct customer of Victron, which can be found through the support section on Victron’s website https://www.victronenergy.com/support. Hence, the direct customer shall on behalf of Victron Energy deal with any warranty claims made under any warranty that Victron Energy may provide directly to end-users. This support section on Victron’s website https://www.victronenergy.com/support will provide further guidance on the procedure for end-users to make a claim under this limited warranty.
If the end-user is a consumer – a natural person who is acting for purposes which are outside that person's trade, business, craft or profession – the following applies. The rights and remedies granted to the consumer under this limited warranty are without prejudice to the consumer’s statutory rights. Furthermore, the consumer is entitled by law to remedies from the seller free of charge in the event of a lack of conformity of the goods (such as repair, replacement, price reduction or rescission), which remedies are not affected by this limited warranty.
Warranty
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 original 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 original end-user, with a maximum of 30 months from the Victron Energy invoice date, Lithium batteries: 3 years from date of purchase by the original end-user, with a maximum of 42 months from the Victron Energy invoice date. In addition to this, proof of correct battery usage is required when making a battery warranty claim.
For a 10% surcharge on the current net price for products that came with a 5-year warranty, an additional 5 years of warranty can be purchased by Victron’s direct customers, bringing the total warranty to 10 years. Warranty extensions need to be applied for ultimately one year before the expiration of the original term. Victron may ask proof that the product was still functional at the time of purchase of the extended warranty.
During the warranty period, Victron Energy will, at its discretion, repair, replace or (partly) credit 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:
- Reversed battery polarity.
- Inadequate connection.
- Mechanical shock or deformation.
- Contact with liquid or oxidation by condensation.
- Use in an inappropriate environment (dust, corrosive vapour, humidity, high temperature, biological infestation, etc.).
- Breakage or damage due to lightning.
- Connection terminals and screws destroyed or other damages, like overheating, due to insufficient tightening.
- For any electronic breakage except due to lightning (reverse polarity, over‐voltage due to external cause), the state of the internal control diode and/or the input/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 other than Victron Energy or one of its authorized Repair Centres. In order to qualify for the warranty, the product must not be disassembled or modified.
This warranty and our warranty obligations thereunder (repair, replacement or credit) are the direct customer’s and, if applicable, the end-user’s sole rights and remedies and our sole obligations with respect to any defective and/or non-conforming product or breach of warranty and is subject to and without prejudice to the limitations of liability in this warranty.
Victron Energy shall not be liable for damages, whether direct, incidental, special, or consequential, even caused by negligence or fault.
As a product requires service, it must be brought back to the place of purchase. In case no contact can be made with the merchant, or if he is either unable or not allowed to provide service, direct contact should be made with Victron Energy through the support section on Victron’s website.
In case Victron Energy replaces a product, it will own the replaced product. Victron Energy owns all parts removed from repaired products. Victron Energy uses new or reconditioned parts made by various manufacturers when performing warranty repairs or building replacement products.
If Victron Energy repairs or replaces a part of a product, its warranty term is not extended: the warranty will apply for the remaining term of the original warranty term. For example, if Victron Energy replaces a product with a 5-year warranty after 3 years, the warranty of this product will apply for another 2 years, with a minimum of 6 months.
All remedies and the measure for damages are limited to the above. Victron Energy shall in no event be liable for consequential, incidental, contingent or special damages, even if having been advised of the probability of such damages.
The foregoing limited warranty provided by Victron Energy is in lieu of any other warranties, express or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, of any kind whatsoever including, without limitation, warranties of merchantability or fitness for a particular purpose, with respect to any product. The above is without prejudice to the arrangement for consumers detailed above.
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 Victron Energy's product can be reasonably expected to cause the 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.
Warranty on repairs for products outside their warranty period
The warranty period on products that are outside their warranty period and have been repaired by Victron Energy or one of the Victron Energy Repair centres is six (6) months from delivery. The same applies to spare parts and circuit boards that have been supplied or repaired 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 of this warranty 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 of this warranty.
Applicable law
This warranty is exclusively governed by the laws of the Netherlands, to the exclusion of the UN Convention on Contracts for the International Sale of Goods.
Contact details
Victron Energy B.V. | De Paal 35, 1351 JG Almere, The Netherlands | https://www.victronenergy.com/support
