Victron 230V 7000W Isolation Transformer

Victron 230V 7000W Isolation TransformerVictron 7000W Isolation Transformer: Marine Grade Galvanic Protection and Electrical Safety Eliminate Shore Power Risks with a Toroidal Isolation Transformer for Boats and Yachts The Victron 7000W Isolation Transformer (230V) provides a complete solution for marine electrical safety and galvanic corrosion prevention. By physically separating your vessel's AC system from the shore power supply, it removes the direct electrical path that causes stray

Victron 7000W Isolation Transformer: Marine-Grade Galvanic Protection and Electrical Safety

Eliminate Shore Power Risks with a Toroidal Isolation Transformer for Boats and Yachts

The Victron 7000W Isolation Transformer (230V) provides a complete solution for marine electrical safety and galvanic corrosion prevention. By physically separating your vessel's AC system from the shore power supply, it removes the direct electrical path that causes stray current corrosion and unsafe ground faults. This marine isolation transformer is essential for any boat connected to shore power, protecting both crew and underwater metals.

Unlike galvanic isolators that only block low-voltage DC currents, this Victron isolation transformer delivers full galvanic separation. It ensures that Residual Current Devices (RCDs/GFCIs) and circuit breakers function correctly on board, even without a shore-side ground connection. The result is a safer, more reliable electrical system for bluewater cruising, liveaboard yachts, and commercial vessels.

How Galvanic Corrosion Threatens Your Vessel

Galvanic corrosion occurs when dissimilar metals (such as a bronze propeller and a stainless steel shaft) are immersed in an electrolyte like seawater and electrically connected. Connecting to shore power can complete this circuit via the shore ground, accelerating corrosion of sacrificial anodes, shafts, propellers, and through-hull fittings. This risk exists for all hull types—fibreglass, aluminium, and steel—whenever a metallic component contacts water. The Victron 7000W isolation transformer breaks this circuit, preserving your anodes and extending the life of critical underwater gear.

Soft Start Technology Prevents Nuisance Tripping

A common challenge with high-power transformers is the inrush current that can trip shore-side breakers. Victron's integrated soft start circuit gradually energises the toroidal core, allowing the 7000W isolation transformer to connect smoothly to marina supplies without causing interruptions. This feature is particularly valuable when using limited-capacity shore power pedestals or when sharing a supply with other vessels.

Key Features of the Victron 7000W Isolation Transformer

• Complete galvanic isolation between shore and vessel AC systems
• Toroidal transformer design for low noise, compact size, and reduced weight
• Soft start eliminates inrush current trips on shore breakers
• 1:1.05 voltage ratio compensates for marina voltage drop, delivering a stable 240V output from a 230V input
• 32A continuous output supports high-demand onboard systems
• IP21 aluminium enclosure with corrosion-resistant powder coating (RAL 5012 blue)
• Operates at 50/60 Hz for global compatibility
• Safety certified to EN 60076

Designed for the Marine Environment

The Victron 7000W isolation transformer is built to withstand the demands of life at sea. Its toroidal core not only reduces audible hum but also minimises weight to 30 kg, easing installation in tight engine rooms or lazarettes. The robust aluminium enclosure resists corrosion, while the IP21 rating protects against dripping water when mounted in a sheltered location. Front-panel indicator LEDs provide clear operational status, and heavy-duty cable glands ensure secure, water-resistant AC connections.

For optimal safety, Victron recommends connecting the secondary neutral to ground when the vessel is out of the water. This practice maintains earth fault protection during yard periods or storage.

Installation Flexibility

With dimensions of 362 x 258 x 221 mm, this 7000W marine transformer fits into standard equipment bays. Integrated mounting feet allow secure vertical or horizontal installation. The unit requires a minimum cable cross-section of 6 mm² (AWG 10) for input and output wiring, and the 3/8"-16 (approx. M10) stud terminals accommodate heavy-duty lugs up to 4/0 AWG (approx. 95 mm²).

Why Choose Victron Energy?

Victron Energy is a trusted name in marine power solutions, known for rigorous engineering and long-term reliability. This isolation transformer integrates seamlessly with other Victron components such as inverter/chargers, battery monitors, and solar charge controllers, forming a complete onboard energy system. Its automatic voltage sensing (on the 3600W variant) and robust design make it a preferred choice for professional installers and serious cruisers.

Protect Your Investment Today

Don't let galvanic corrosion compromise your vessel's safety and longevity. Order the Victron 7000W Isolation Transformer and enjoy peace of mind with a fully isolated, shore-power system that safeguards both your crew and your boat's underwater metals.