Victron Energy VDI-64A Galvanic Isolator – 64A Max Waterproof (Potted)

Galvanic Isolator VDI-64A 64A Max Waterproof (Potted)

The galvanic isolator prevents electrolytic corrosion. It blocks low voltage DC currents that enter your boat via the shore power earth wire. These currents can cause corrosion to the boats underwater metals, like the hull, propeller, shaft and so on.
The galvanic isolator consists internally of two diodes which are connected in anti-parallel fashion. When they are connected in this way, the diodes allow current in both directions but only above a certain threshold voltage. The voltage at which diodes conduct is about 1.4 Vdc.

The isolator is installed directly behind your boats 120V - 230V connection. The forward voltage from the galvanic isolator is higher than the potential difference between metals. As a result, this voltage will not allow conduction and as such, the galvanic isolator will prevent any electrolytic current. However, if there is a (higher) error voltage in the AC circuit, the diodes will allow current through and the residual-current device will break the circuit.

Terminal posts are 6MM (1/4)

This item is notABYC A-28 approved

The Victron Energy VDI-64A galvanic isolator is designed to protect your boat’s underwater metals from electrolytic corrosion caused by stray currents entering through shore power connections. Installing this device ensures that your hull, propeller, and shaft remain free from damage, extending the longevity of your vessel’s underwater components. The isolator features two internal diodes connected in anti-parallel, allowing current to flow in both directions only above a threshold voltage of approximately 1.4 volts DC, which prevents unwanted corrosion without interfering with normal electrical operation.
Mounted directly behind your boat’s 120V or 230V connection, the VDI-64A operates effectively to block low voltage DC currents while allowing higher error voltages to pass through to trip residual current devices. This protective function safeguards your boat without compromising overall electrical safety. The terminal posts are 6mm (1/4 inch), providing secure connections for reliable performance. While not ABYC A-28 approved, this isolator offers a robust solution for galvanic corrosion prevention in marine environments.
Victron Energy’s VDI-64A galvanic isolator is a durable, waterproof device suitable for demanding marine applications. Its potted design enhances water resistance and durability, ensuring long-term operation even in harsh conditions. For detailed installation instructions and maintenance guidance, refer to the owner’s manual available at this link. Proper installation of the VDI-64A helps maintain the integrity of your vessel’s underwater metals, reducing corrosion-related repairs and safeguarding your investment. Contact your dealer for support, repairs, or returns related to this product to ensure optimal performance and compatibility with your marine electrical system.

Features:

• Max current capacity of 64A for robust protection

• Waterproof (potted) design suitable for marine environments

• Internal diodes allow bidirectional current flow above 1.4V DC threshold

• Mounted directly behind shore power connection for easy installation

• Secure 6mm (1/4 inch) terminal posts for reliable wiring