Victron Galvanic Isolator VDI-16

The galvanic isolator consists internally of two diodes connected in anti-parallel. In this configuration, the diodes allow voltage to pass in both directions, but only above a certain threshold voltage.
The voltage at which a diode begins to conduct is approximately 1.4 Vdc. The isolator is placed directly after the 230V connection of your boat. This pass-through voltage of the galvanic isolator is higher than the potential difference between metals. As a result, this voltage will not be sufficient to cause conduction, and thus the galvanic isolator prevents the formation of an electrolytic current. However, if there is a (higher) fault voltage in the alternating current circuit, the diodes will allow the current to pass and the residual current circuit breaker will break the circuit.

The advantage of the galvanic isolator is its limited weight, price, and size. The disadvantage, however, is that there must be a good hull ground connection. A second issue is that electrolytic corrosion can be caused not only by the ground connection but also by the neutral conductor (if it has a connection to ground at a consumer device on board through a noise filter, etc.). An alternative to the galvanic isolator is the isolation transformer, which, however, has a higher cost.

The galvanic isolator consists internally of two diodes connected in anti-parallel. In this configuration, the diodes allow voltage to pass in both directions, but only above a certain threshold voltage. The voltage at which a diode begins to conduct is approximately 1.4 Vdc. The isolator is placed directly after the 230V connection of your boat. This pass-through voltage of the galvanic isolator is higher than the potential difference between metals. As a result, this voltage will not be sufficient to cause conduction, and thus the galvanic isolator prevents the formation of an electrolytic current. However, if there is a (higher) fault voltage in the alternating current circuit, the diodes will allow the current to pass and the residual current circuit breaker will break the circuit. The advantage of the galvanic isolator is its limited weight, price, and size. The disadvantage, however, is that there must be a good hull ground connection. A second issue is that electrolytic corrosion can be caused not only by the ground connection but also by the neutral conductor (if it has a connection to ground at a consumer device on board through a noise filter, etc.). An alternative to the galvanic isolator is the isolation transformer, which, however, has a higher cost. Maximum current : 16A Peak current : 1600A / 20ms Connection : 2 x M6 Cooling element : aluminium IP category : IP 67 Material : Anodized aluminium Dimensions (hxwxd in mm) : 60x120x200 mm