Victron Galvanic Isolator VDI-32A 32A Max Waterproof (Potted)

The Victron Galvanic Isolator VDI-32A 32A Max Waterproof (Potted) is a critical safety device for any cruising boat or permanently moored vessel connected to shore power. After years on the water, corrosion of underwater metals—through-hulls, zinc anodes, and hull fittings—is one of the most expensive problems a boater faces. This isolator blocks the low-voltage DC currents that travel through the shore power ground wire, currents that silently cause galvanic corrosion even when your boat sits idle at the dock. Whether you're a live-aboard, a seasonal cruiser, or run a charter operation, this device pays for itself the first time it prevents a failed through-hull or corroded propeller shaft.

The Victron VDI-32A uses proven galvanic isolation technology—a transformer-coupled design that eliminates the ground loop while maintaining safe AC grounding for shock protection. Rated for 32 amps maximum, it handles the typical 30-amp shore power service found on most cruising vessels and handles brief surges without degradation. The fully potted, waterproof construction protects internal components from salt spray, humidity, and vibration common in the marine environment, ensuring reliability in the harsh conditions found in engine rooms, electrical lockers, and exposed transom installations. Installation is straightforward—it sits between the shore power inlet and your boat's main distribution panel, requiring no recalibration or maintenance once set.

This isolator is essential for cruising sailboats, trawlers, and any vessel that spends extended time plugged into shore power infrastructure. It works seamlessly with standard 30-amp and 50-amp shore power pedestals and is compatible with all common AC panel configurations, from simple single-breaker setups to complex systems with multiple distribution points. The compact footprint (7 x 3 x 11 inches) makes integration into tight electrical spaces practical, and the 5.05-pound weight poses no structural concern. For boaters serious about preserving their vessel's hull integrity and avoiding costly underwater repairs, the Victron Galvanic Isolator VDI-32A is non-negotiable infrastructure.