Victron Isolation Transformer 4500W Auto 115/230V [ITR050452042]
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Isolation Transformer 4500W Auto 115/230V
Safety and prevention of galvanic corrosion - The Isolation Transformer eliminates any electrical continuity between AC shore power and the boat. It is essential for safety and eliminates the need for galvanic isolators and polarity alarms.
Safety is taken for granted in the case of a normal onshore installation. A circuit breaker or a GFCI (Ground-Fault Circuit Interrupter) will trip in the event of a short circuit or current leakage to ground. Connecting the ground wire of the shore-side supply to the metal parts of the boat will result in galvanic corrosion (see below). Bringing only the live and neutral wire on board results in an unsafe situation because GFCIs will not work, nor will a fuse blow in case of a short circuit to a metal part on the boat.
Galvanic corrosion occurs when two dissimilar metals in electrical contact are simultaneously exposed to an electrically conducting fluid. Seawater and, to a lesser extent, fresh water are such fluids. In general, the more active alloy of the couple corrodes preferentially while the less active (more noble) material is cathodically protected. The rate of galvanic corrosion is a function of several variables including area ratios, conductivity of the fluid, temperature, nature of the materials, etc.
It is a misunderstanding that galvanic corrosion occurs only in metal and aluminium hulls. In fact it can occur on any boat as soon as a metallic part (the shaft and propeller) is in contact with water. Galvanic corrosion will quickly dissolve your sacrificial anodes, and attack the shaft, propeller and other metal parts in contact with water as soon as the boat is connected to the shore -side supply.
It might therefore be tempting not to connect the ground conductor: this is however e xtremely dangerous because GFCIs will not work nor will a fuse blow in case of a short circuit to a metal part on the boat.
The best solution to avoid galvanic corrosion and at the same time prevent any uns afe situation is to install an Isolation Transformer to connect to the shore-side supply.
The Isolation Transformer eliminates any electrical continuity between shore power and the boat. The shore power is fed to the primary side of the transformer and the ship is connected to the secondary.
The Isolation Transformer completely isolates the boat from the shore ground. By connecting all metal parts to the neutral output on the secondary side of the transformer, a GFCI will trip or a fuse will blow in case of a short circuit.
Soft start is a standard feature of a Victron Energy isolation transformer. It will prevent the shore power fuse from blowing due to the inrush current of the transformer, which would otherwise occur.
It is also recommended, for optimal safety, to connect the secondary neutral of the transformer to ground when the boat is out of the water.
4500 Watt Auto 115/230 V - This model will automatically switch to 115 V or 230 V supply, depending on input voltage.
Supply 88 V – 130 V: switches to 115 V supply
Supply 185 – 250 V: switches to 230 V supply range.
Note: The AC input voltage is raised by 1:1.05 ratio at the AC output.
Please contact your dealer for any returns, repairs or support issues related to this product.Owner's Manual (pdf)
Brochure (pdf)
Shipping Policy
Shipping Policy
Shipping Policy
Effective Date: July 14, 2026
At Roam & Harbor LLC ("Roam & Harbor," "we," "our," or "us"), we are committed to getting your order to you as quickly and efficiently as possible so you can spend more time enjoying your next adventure. Whether you're shopping for marine, RV, camping, or outdoor gear, we're here to make your experience as smooth as possible.
Order Processing
Orders are processed the same business day when placed before our daily order cutoff time. Orders placed after the cutoff, on weekends, or on recognized holidays will be processed on the next business day.
Once your order has been processed, you will receive a shipping confirmation email with tracking information.
Please note that processing times may be extended during holidays, promotional events, or periods of unusually high order volume.
Shipping Methods
We offer the following shipping options:
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Standard Shipping
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Expedited Shipping (additional fee)
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Overnight Shipping (additional fee)
Available shipping methods and estimated delivery times will be displayed during checkout based on your shipping destination.
Shipping Rates
Shipping rates are calculated at checkout based on your order, destination, package dimensions, and the selected shipping method.
From time to time, Roam & Harbor may offer promotional shipping offers, including free shipping on qualifying orders. Any applicable promotions will be clearly communicated on our website and during checkout.
Shipping Carriers
To provide the best delivery experience, we ship through a variety of trusted carriers, including national and regional delivery partners. Carrier selection is determined based on your location, package size, and the shipping service selected at checkout.
International Shipping
Roam & Harbor proudly ships to customers around the world.
Please note that international customers are responsible for all applicable customs duties, import taxes, VAT, brokerage fees, and other charges imposed by their destination country. These fees are not included in your purchase price or shipping charges and must be paid by the recipient upon delivery, where applicable.
International delivery times may vary due to customs processing and local postal services.
Order Tracking
Once your order has shipped, you will receive an email containing your tracking number. Tracking information may take up to 24 hours to become active after your shipment has been processed by the carrier.
Shipping Delays
While we work hard to meet all estimated delivery times, shipping delays may occasionally occur due to weather conditions, carrier disruptions, customs inspections, or other circumstances beyond our control.
Roam & Harbor is not responsible for delays caused by shipping carriers or events outside of our reasonable control. We appreciate your patience and understanding should these situations arise.
Lost, Damaged, or Missing Packages
If your package appears to be lost, damaged during transit, or has not arrived within the expected delivery timeframe, please contact our Customer Support team as soon as possible.
Email: admin@roamandharbor.com
We will work with the shipping carrier to investigate the issue and assist you in resolving it as quickly as possible.
Please note that shipping damage and manufacturer defects are handled differently. If you receive a product that is defective due to a manufacturing issue rather than shipping damage, please contact our Customer Support team immediately. We will review the issue and work with you to determine the appropriate resolution in accordance with our Returns Policy and any applicable manufacturer warranty.
Incorrect Shipping Address
Customers are responsible for providing an accurate shipping address at checkout.
If you notice an error after placing your order, please contact us immediately. While we will do our best to update your order before it ships, we cannot guarantee changes once an order has entered processing or has been handed over to the carrier.
Roam & Harbor is not responsible for orders delivered to an incorrect address provided by the customer.
Questions?
If you have any questions regarding shipping, delivery, or your order status, we're happy to help.
Roam & Harbor LLC
Email: admin@roamandharbor.com
Return & Refund Policy
Return & Refund Policy
Returns & Refund Policy
Effective Date: July 14, 2026
At Roam & Harbor LLC ("Roam & Harbor," "we," "our," or "us"), we want you to shop with confidence. If you're not completely satisfied with your purchase, we're here to help. Please review the following policy to understand our return, refund, and exchange process.
Return Eligibility
Most items may be returned within 30 days of the delivery date.
To qualify for a return, items must:
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Be unused, uninstalled, and in their original condition.
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Include all original packaging, manuals, accessories, tags, and components.
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Be free from signs of wear, misuse, modification, or damage after delivery.
Roam & Harbor reserves the right to refuse returns that do not meet these eligibility requirements.
Non-Returnable Items
The following items are not eligible for return:
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Clearance or final sale items.
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Gift cards.
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Hazardous materials or products classified as hazardous for shipping.
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Opened consumable products.
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Any item identified as non-returnable at the time of purchase.
Return Authorization
Because Roam & Harbor works with multiple fulfillment partners and manufacturers, all returns require prior authorization.
Return instructions and the appropriate return location vary depending on the product purchased. Please contact our Customer Support team before sending any item back.
Returns sent without prior authorization or to an unauthorized address may be refused, returned to the sender, or experience delays in processing.
Return Shipping
For standard returns, customers are responsible for return shipping costs.
We recommend using a trackable shipping service and purchasing shipping insurance, as Roam & Harbor is not responsible for items lost or damaged while being returned.
Damaged, Defective, or Incorrect Items
If your order arrives:
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Damaged during transit,
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Defective due to a manufacturing issue, or
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Different from the item you ordered,
please contact our Customer Support team as soon as possible.
To help us resolve your claim quickly, we may request photographs of the product, packaging, shipping label, or other relevant information.
Once your claim has been reviewed and approved, Roam & Harbor will provide a prepaid return shipping label when a return is required.
Depending on inventory availability and the nature of the issue, we may provide one of the following resolutions:
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A replacement product (subject to availability).
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A full refund to your original payment method.
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Another mutually agreed-upon resolution when appropriate.
Exchanges
Exchanges are available only for products confirmed to be defective.
If a replacement product is unavailable, a full refund will be issued to your original payment method.
Inspection & Refunds
Returned merchandise may be inspected by Roam & Harbor or one of our authorized fulfillment or manufacturer partners before a refund or replacement is approved.
Once your return has been received and approved, refunds will be issued to your original payment method within 14 business days.
Please note that your financial institution may require additional time to post the refund to your account.
Original shipping charges are non-refundable unless the return results from our error or an approved defective, damaged, or incorrectly shipped item.
Refused Deliveries & Incorrect Addresses
Customers are responsible for providing an accurate shipping address at checkout.
Orders returned because of an incorrect address, refused delivery, or failure to accept delivery may be subject to the original shipping charges and any return shipping fees incurred by Roam & Harbor or our fulfillment partners.
Manufacturer Warranties
Many products sold by Roam & Harbor are covered by manufacturer warranties.
Manufacturer warranties are separate from this Returns & Refund Policy and remain subject to the individual manufacturer's terms and conditions.
If your issue occurs outside our 30-day return period but falls within a manufacturer's warranty, our Customer Support team will gladly assist you in identifying the appropriate warranty process whenever possible.
How to Start a Return
To begin a return request, please contact our Customer Support team and provide:
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Your order number.
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The reason for the return.
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Photos of the product, if applicable.
Our team will review your request and provide return authorization along with the appropriate return instructions.
Email: admin@roamandharbor.com
Questions?
If you have any questions regarding returns, refunds, exchanges, or warranty assistance, we're here to help.
Roam & Harbor LLC
Email: admin@roamandharbor.com
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Vendor:
Victron Energy
