WP-GI 16 & 32A GALVANIC ISOLATION BLOCKER is an anti-corrosion power connector that can eliminate the potential difference between water power contact points and is an important component of the ship power distribution system.
This manual provides installation and safety instructions for the WP-GI 16A and 32A galvanic isolation blockers. It explains how to install the device between a boat’s grounding system and shore power to prevent galvanic corrosion. The device is designed for indoor use, must be mounted vertically, and requires professional installation. It features an anodized aluminum heat sink and is waterproof (IP67). Safety precautions include avoiding exposure to liquids, chemicals, and placing it near batteries. Testing is recommended annually or after electrical events.
Technical specifications include maximum current ratings (16A or 32A), peak current (1600A/20ms or 3000A/20ms), voltage range (85V–260V AC), and dimensions. The device is tested to ANSI/ABYC A-28 standards and complies with EMC and safety directives.
| Voltage | 85V – 260V AC |
|---|---|
| Connection | 2 x M6 studs |
| Heat Sink | Anodized aluminium |
| IP Rating | IP 67 (Waterproof potted) |
| Compliance | ANSI/ABYC A-28 |
It prevents galvanic corrosion between a boat and shore power by blocking potential differences between different metals.
It provides a threshold voltage of approximately 1 Volt.
It must be wired into the green (safety) grounding connection ahead of all vessel grounding connections to remain effective.