Victron Energy VDI Galvanic Isolator, 230V, IP67, M6 Connection, Waterproof Potted

Overview

The Victron Energy Galvanic Isolator VDI-16, VDI-32 and VDI-64 is a waterproof potted galvanic isolator range for boats connected to 230V shore power. It blocks low-voltage DC currents that can enter through the shore power earth wire and attack underwater metals such as the hull, propeller, shaft, and other bonded metal parts.

Inside the unit, two diodes are connected in an anti-parallel arrangement, allowing current in both directions only once the threshold is reached at about 1.4 Vdc. This lets the isolator stop normal galvanic current while still allowing higher AC fault current to pass so the residual-current device can trip.

The range uses an IP67 potted enclosure with an anodized aluminium heat sink, M6 connections, and amperage options for 16 A, 32 A, and 64 A shore power installations.

Key features

• Blocks low-voltage DC galvanic currents carried through the shore power earth wire.
• Helps protect underwater metals including hull fittings, propellers, shafts, and bonded metalwork.
• Anti-parallel diode layout conducts at about 1.4 Vdc, keeping normal galvanic current from flowing.
• Installs directly behind the boat's 230V shore power connection.
• IP67 waterproof potted construction suits exposed marine electrical spaces when installed correctly.
• Anodized aluminium heat sink supports cooling in shore power installations.
• M6 terminals are used across the 16 A, 32 A, and 64 A models.

Variants

This Victron Energy galvanic isolator range is offered in three current ratings for different shore power installations.

The amperage rating, peak current rating, weight, and case dimensions vary by model. The waterproof potted construction, IP67 protection category, anodized aluminium heat sink, and M6 connection are consistent across the range.

• GDI000016000, Amperage 16A. This VDI-16 model is rated for 16 A maximum current, with 1600 A peak current for 20 ms, a weight of 1 kg, and dimensions of 60 x 120 x 200 mm.
• GDI000032000, Amperage 32A. This VDI-32 model is rated for 32 A maximum current, with 3200 A peak current for 20 ms, a weight of 2 kg, and dimensions of 63 x 164 x 200 mm.
• GDI000064000, Amperage 64A. This VDI-64 model is rated for 64 A maximum current, with 6000 A peak current for 20 ms, a weight of 3.2 kg, and dimensions of 63 x 164 x 335 mm.

Installation and setup

The isolator belongs in the green safety grounding conductor between the shore power connection and the vessel grounding system, ahead of all grounding connections to the boat. This placement matters because any grounding path that bypasses the isolator can make it ineffective.

Mount the unit in a well-ventilated, heat-resistant area with 10 cm of clear space around it. It should be mounted with its length vertical so heat can rise away from the heat sink during normal operation and during fault-current conditions.

Use on board

This product is a good match for boats that spend time connected to marina shore power and need galvanic corrosion protection without replacing the whole AC shore power system. It is most relevant on vessels with bonded underwater metals, especially where the boat may remain plugged in for long dockside periods.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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