The Victron Energy Isolation Transformer 2500W provides galvanic isolation between shore power and a vessel or vehicle's onboard AC system. It suits marine, mobile and off-grid installations where eliminating earth leakage currents and protecting against galvanic corrosion matters. Rated at 2500W with dual voltage compatibility of 115V and 230V, it works across a range of AC shore power inputs.

Key features of the Victron isolation transformer

• Power rating, 2500W continuous, suitable for moderate onboard AC loads.
• Dual voltage, 115V and 230V input/output for different shore power standards.
• Galvanic isolation, prevents corrosion caused by stray earth currents in marina environments.
• Isolated earth path, breaks the direct electrical connection between shore earth and vessel hull, reducing electrolytic corrosion risk.
• Weight, 12.11 kg, suitable for permanent installation in a dedicated enclosure or bulkhead mounting.
• System fit, compatible with Victron shore power and inverter/charger systems for integrated AC distribution.

How it works

An isolation transformer magnetically couples the shore power supply to the onboard AC system without a direct electrical connection. This breaks the galvanic circuit that would otherwise form between a hull, the shore earth conductor, and other vessels or structures in the water, a common cause of accelerated corrosion on propellers, shafts and hull fittings.

The 115/230V dual voltage capability means the transformer accepts either North American 115V shore supplies or European 230V supplies, useful for vessels moving between regions with mixed infrastructure. At 2500W it covers typical onboard loads such as battery chargers, air conditioning units, galley appliances and general AC distribution panels. The unit is passive, with no active electronics, so maintenance needs stay low.

Applications

Used on marine vessels connected to shore power at marinas, on motorhomes and coaches using site hook-up, and in off-grid cabins or remote installations where the incoming supply earth needs separating from the local system earth. Also suited to commercial vessels and workboats with mixed 115V/230V shore power requirements.

Installation notes

This transformer handles mains AC voltages and must be installed by a qualified electrician or marine electrical engineer, positioned close to the shore power inlet and upstream of the main AC distribution panel. Mount in a dry, ventilated location with appropriate circuit protection upstream and downstream.

What's in the box

• 1x Victron Energy Isolation Transformer 2500W 115/230V