Galvanic Isolator VDI-16

companies Victron Energy This advanced device is specifically designed to protect a boat's metal components from the harmful effects of electrolytic corrosion. This corrosion can occur when a boat is connected to shore power in port and low-voltage DC currents flow through the ground. VDI-16 effectively blocks these unwanted currents, providing complete protection for the hull, propeller, and other metal parts exposed to water. Use of diodes connected in a counter-clockwise direction is a key element of the operation of this device - thanks to them, current can flow in both directions, but only after exceeding a certain threshold value, which prevents the occurrence of unwanted low-voltage currents.
VDI-16 is a device that is easy to install, which makes it an ideal choice for both professionals and amateurs. They are mounted directly behind the 230 V connection socket., meaning it doesn't require complicated tools or specialized technical knowledge. This allows every user to protect their boat from the effects of corrosion. This product is made of anodized aluminum, ensuring not only durability but also resistance to environmental conditions such as saltwater, humidity, and fluctuating temperatures. Protection class IP67 additionally, it guarantees that the insulator is resistant to dust and water penetration, which is essential in marine conditions.

Advanced Circuit Separation and Protection

The VDI-16 galvanic isolator is characterized by advanced circuit separation mechanism, which effectively eliminates the effects of electromagnetic interference on delicate electronic devices on your boat. Two diodes in the device act as a barrier, allowing current to flow only when the voltage exceeds 1.4V DC. This means that under normal operating conditions, when the potential difference between metals is lower, current will not be conducted, and therefore corrosion will not occur. If a higher voltage occurs in the AC installation, the diodes will allow current to flow, and the residual current protection will immediately interrupt the circuit, protecting the installation.
This innovative approach to circuit protection ensures that the metal components of your boat, such as the hull and drive shaft, remain safe and durable for many years. Furthermore, the device is designed to minimize impact on other components of the electrical system, making it extremely effective protective solution. By choosing VDI-16, you can be sure that your boat will be protected against the effects of corrosion, even in the most demanding conditions.

Durability and Reliability in Harsh Conditions

The VDI-16 galvanic isolator was designed for use in extreme marine environments, where equipment must withstand both harsh environments and frequent exposure to moisture and salt. Anodized aluminum construction provides it not only with high corrosion resistance, but also with mechanical strength, making it resistant to shock and mechanical damage. Thanks to the IP67 protection class, the device is completely sealed, meaning it can operate flawlessly even in the most unfavorable conditions, such as prolonged immersion in water.
The VDI-16 weighs only 1 kg and has compact dimensions, making it easy to install in confined spaces. Additionally, maximum operating current 16 A and a peak current of up to 1600 A (for 20 ms) make it suitable for most standard boat installations, ensuring system reliability and longevity. M6 type connections provide a solid and secure attachment, which minimizes the risk of cables coming loose and failing during operation.

Technical specifications

• Model: VDI-16 Galvanic Isolator


• Maximum current: 16 A


• Peak current (20 ms): 1600 A


• Connection: M6


• Material: Anodized aluminum


• Protection category: IP67


• Dimensions (H x W x D): 60 x 120 x 200 mm


• Libra: 1 kg

This is an essential device for any boat owner who wants to ensure the longevity of metal components exposed to electrolytic corrosion. With easy installation, robust construction, and advanced low-voltage protection, the VDI-16 provides safety and peace of mind. It's a reliable solution for years of use in the most demanding marine environments.