Galvanic Isolator VDI-64 A

The Victron Galvanic Isolator VDI-64 A provides essential protection for your vessel's underwater metals against electrolytic corrosion. This professional-grade device blocks harmful low-voltage DC currents that enter through shore power connections, preventing damage to your hull, propeller, shaft, and other submerged metal components.

Built around a dual diode configuration connected in anti-parallel fashion, this isolator allows bidirectional current flow but only above a threshold voltage of approximately 1.4 Vdc. This clever design means the forward voltage is higher than the potential difference between metals, effectively blocking corrosive galvanic currents whilst maintaining full electrical safety compliance. When fault voltages exceed this threshold, the diodes conduct current, allowing your boat's residual current device to disconnect the circuit as designed.

With a maximum continuous current rating of 64A and an impressive peak current capacity of 6000A for 20 milliseconds, the VDI-64 A handles both normal operation and surge conditions with complete confidence. The unit is housed in a fully waterproof potted enclosure with IP67 protection rating, making it ideal for demanding marine environments where moisture and salt spray are constant challenges.

The robust construction features an anodised aluminium heat sink that provides excellent thermal management whilst resisting corrosion. Measuring 335mm x 164mm x 63mm and weighing 3.2kg, the unit strikes an ideal balance between compact installation and substantial build quality. M6 terminal connections ensure secure, reliable electrical connections that won't work loose with vessel movement or vibration.

Installation is straightforward, with the isolator fitted directly behind your boat's 230V AC shore power connection. The unit should be mounted vertically with at least 10cm clearance around it for optimal airflow and heat dissipation. This positioning ensures maximum cooling efficiency during extended use, maintaining reliable performance even in warm climates or high-load situations.

The VDI-64 A represents proper marine electrical practice, offering galvanic protection without compromising safety system functionality. Unlike isolation transformers that provide complete galvanic isolation, this device allows protective earth connections to function correctly whilst blocking the destructive currents that cause electrolysis. This approach maintains compliance with electrical safety regulations whilst delivering the corrosion protection your vessel needs.

Backed by Victron Energy's respected reputation for marine electrical equipment and covered by a comprehensive 5-year warranty, this galvanic isolator delivers professional-grade protection you can depend on. It's the practical choice for boat owners who understand that preventing corrosion is far more cost-effective than repairing the damage it causes.

Galvanic Isolator VDI-64 A – Manual