Garmin GT17M-THF Galvanic Isolator Kit

The Garmin GT17M-THF Galvanic Isolator Kit is an essential component for any serious boater running modern electronics. Stray electrical currents can cause significant corrosion damage to through-hull fittings, propellers, and sacrificial anodes, often without immediate notice. This isolator kit is designed to protect your vessel's metal hardware from such damage, which can lead to costly repairs or replacements.

Utilizing transformer-coupled isolation technology, the GT17M-THF effectively breaks the galvanic circuit between your boat's AC and DC electrical systems. This prevents the flow of stray currents that can accelerate corrosion on aluminum and zinc components. The compact and lightweight design—only 0.5 lbs—allows for easy installation in the electrical cabinet without taking up valuable space.

Boaters with larger vessels, multiple through-hull fittings, or those who keep their boat in saltwater environments will benefit the most from this protection. The Garmin GT17M-THF integrates seamlessly with Garmin marine electronics systems and standard shore power pedestals, making installation straightforward for any competent marine electrician.