Victron Energy Isolation Transformer 3600W Auto 115/230V Indispensable in professional marine energy systems. It prevents electrolytic corrosion and above all serves as a device to guarantee a safe electric system. Toroidal wound technology for quietness and high efficiency. Soft start circuitry will ensure that the shore circuit breaker will not trip when plugged in. Please contact your dealer for any returns, repairs or support issues related to this product.