{"title":"Marine Shore Power Isolation Transformers","description":"\u003cp\u003eExplore Marine Shore Power Isolation Transformers at Mariners Warehouse. Compare available products and review each listing for part numbers and specifications.\u003c\/p\u003e","products":[{"product_id":"victron-isolation-transformer-2000w-115-230-vac-82997","title":"Victron Isolation Transformer - 2000W - 115\/230 VAC MPN - ITR040202041","description":"\u003cp\u003e\u003cstrong\u003eIsolation Transformer - 2000W - 115\/230 VAC\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSafety and prevention of galvanic corrosion The Isolation Transformer eliminates any electrical continuity between AC shore power and the boat. It is essential for safety and eliminates the need for galvanic isolators and polarity alarms. \u003c\/p\u003e\u003cp\u003eSafety is taken for granted in case of a normal on-shore installation. A fuse will blow or a GFCI (Ground Fault Current Interrupter) will trip in case of a short circuit or current leakage to ground. Connecting the ground wire of the shore-side supply to the metal parts of the boat will result in galvanic corrosion (see below). Bringing only the live and neutral wire on board results in an unsafe situation because GFCIs will not work nor will a fuse blow in case of a short circuit to a metal part on the boat. \u003c\/p\u003e\u003cp\u003eGalvanic corrosion occurs when two dissimilar metals in electrical contact are simultaneously exposed to an electrically conducting fluid. Seawater and, to a lesser extent, fresh water are such fluids. In general, the more active alloy of the couple corrodes preferentially while the less active (more noble) material is cathodically protected. The rate of galvanic corrosion is a function of several variables including area ratios, conductivity of the fluid, temperature, nature of the materials, etc. \u003c\/p\u003e\u003cp\u003eIt is a misunderstanding that galvanic corrosion occurs only in metal and aluminium hulls. In fact it can occur on any boat as soon as a metallic part (the shaft and propeller) is in contact with water. Galvanic corrosion will quickly dissolve your sacrificial anodes, and attack the shaft, propeller and other metal parts in contact with water as soon as the boat is connected to the shore-side supply. It might therefore be tempting not to connect the ground conductor: this is however extremely dangerous because GFCIs will not work nor will a fuse blow in case of a short circuit to a metal part on the boat. \u003c\/p\u003e\u003cp\u003eThe best solution to avoid galvanic corrosion and at the same time prevent any unsafe situation is to install an Isolation Transformer to connect to the shore-side supply. \u003c\/p\u003e\u003cp\u003eThe Isolation Transformer eliminates any electrical continuity between shore power and the boat. The shore power is fed to the primary side of the transformer and the ship is connected to the secondary. The Isolation Transformer completely isolates the boat from the shore ground. By connecting all metal parts to the neutral output on the secondary side of the transformer, a GFCI will trip or a fuse will blow in case of a short circuit. \u003c\/p\u003e\u003cp\u003eSoft startis a standard feature of a Victron Energy isolation transformer. It will prevent the shore power fuse from blowing due to the inrush current of the transformer, which would otherwise occur\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.victronenergy.com\/upload\/documents\/20150209_Warranty_final_en.pdf\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eWarranty Info\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg src=\"https:\/\/productimageserver.com\/prop65\/6pt.png\" alt=\"Warning\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to \u003ca href=\"http:\/\/P65Warnings.ca.gov\"\u003eP65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e\u003cstrong\u003ePlease contact your dealer for any returns, repairs or support issues related to this product.\u003c\/strong\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":46386762154146,"sku":"82997","price":468.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/82997XL.jpg?v=1765329138"},{"product_id":"mastervolt-mass-gi-7-isolation-transformer-7kw-96314","title":"Mastervolt Mass GI 7 Isolation Transformer 7KW MPN - 88000705","description":"\u003cp\u003e\u003cstrong\u003eMass GI 7 Isolation Transformer 7KW\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA safe connection between the vessel and the shore installation is an essential part of your electrical system. A galvanic electrical isolation between shore power and the on-board power prevents any electrical corrosion of metal parts while keeping you earthed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUltra-modern high-frequency electronic switch technology.\u003c\/li\u003e\n\u003cli\u003eLightweight and compact.\u003c\/li\u003e\n\u003cli\u003eIntegrated Soft Start function.\u003c\/li\u003e\n\u003cli\u003eConnect to voltages from 90 to 255 V and from 45 to 65 Hz.\u003c\/li\u003e\n\u003cli\u003eUnits can be parallel-coupled for higher capacity.\u003c\/li\u003e\n\u003cli\u003eHigher efficiency, limited heat development.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eModern transformer technology: Light, silent, reliable, and easy - \u003c\/strong\u003eThe Mass GI is supplied with the latest high-frequency switching technology as well as Soft Start for peak loads when connecting to the grid. LED lights on the casing indicate load and overload. The transformer can be remote-controlled. The Mass GI is 75 % lighter and 60 % smaller than a low-frequency transformer.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHigher capacity via parallel switching\u003c\/strong\u003e - Parallel switching of the Mass GI units increases the AC power capacity. Two 16 A\/3.5 kW units ensure 32 A\/7 kW; four units give 64 A\/14 kW.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstall anywhere\u003c\/strong\u003e - With its robust aluminium casing, this isolation transformer can be fitted in any position on the wall or floor. No rubber mountings are necessary because the unit does not vibrate or hum. The Mass GI also features professional connections with strain relief cable glands.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOutput voltage (± 5 %) - 90-255 V\u003c\/li\u003e\n\u003cli\u003eOutput frequency range - 45-65 Hz\u003c\/li\u003e\n\u003cli\u003eInput voltage range - 90-255 V\u003c\/li\u003e\n\u003cli\u003eInput frequency range - 45-65 Hz\u003c\/li\u003e\n\u003cli\u003eNominal input current (230 V) - 32 A\u003c\/li\u003e\n\u003cli\u003eGalvanic isolation - yes\u003c\/li\u003e\n\u003cli\u003eEfficiency - \u0026gt; 93 %\u003c\/li\u003e\n\u003cli\u003ePower 230 V (120 V) - 7000 VA (3840) VA\u003c\/li\u003e\n\u003cli\u003eDimensions, hxwxd: 340 x 261 x 250 mm 13.4 x 10.3 x 9.8 inch\u003c\/li\u003e\n\u003cli\u003eWeight - 10 kg 22.0 lb\u003c\/li\u003e\n\u003cli\u003eCompliance - CE, ABYC\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 88000705\u003c\/p\u003e","brand":"Mastervolt","offers":[{"title":"Default Title","offer_id":47479300849826,"sku":"96314","price":3021.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/96314XL.jpg?v=1785228057"},{"product_id":"asea-power-systems-3-6-kva-isolation-transformer-106085","title":"ASEA Power Systems 3.6 kVA Isolation Transformer MPN - 634003","description":"\u003cp\u003e\u003cstrong\u003e3.6 kVA Isolation Transformer\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eASEA’s Isolation Transformer is a drop-in replacement for Charles IsoG2 designed to protect vessel under-fittings from galvanic corrosion and to shield onboard electronics from reverse polarity and shore power fluctuations. It also ensures safety by preventing the boat from sending unintended electric currents into the surrounding water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIgnition Protected: Certified to ABYC C-1500 requirements, making them safe and reliable to use in gasoline-powered marine vessels.\u003c\/li\u003e\n\u003cli\u003eGalvanic Corrosion Protection: By isolating AC shore power from the boat’s AC power system, the ASEA Isolation Transformer protects the boat from galvanic corrosion.\u003c\/li\u003e\n\u003cli\u003eMarina electrical leakage compliance: With NEC 555.35 becoming mandatory for marinas to check and limit the amount of leakage available per vessel, an isolation transformer doesn’t allow any electrical leakage back to the power pedestal.\u003c\/li\u003e\n\u003cli\u003eCharles Isolation Transformer Replacement: ASEA’s isolation transformers are designed as a direct and improved replacement for Charles IsoG2.\u003c\/li\u003e\n\u003cli\u003eGFPE Tripping Prevention: Eliminates false GFPE tripping by preventing current flow back into the dock, guaranteeing an uninterrupted power supply, even as a transient occupant.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInput Voltage: 120 VAC\u003c\/li\u003e\n\u003cli\u003eInput Current: 30 A\u003c\/li\u003e\n\u003cli\u003eOutput Voltage: 120 VAC\u003c\/li\u003e\n\u003cli\u003eOutput Current: 30 A\u003c\/li\u003e\n\u003cli\u003eOutput Frequency: 60 Hz\u003c\/li\u003e\n\u003cli\u003eWeight: 55 lbs\u003c\/li\u003e\n\u003cli\u003eHeight: 21.6 cm \/ 8.5 in\u003c\/li\u003e\n\u003cli\u003eWidth: 21.6 cm \/ 8.5 in\u003c\/li\u003e\n\u003cli\u003eWidth (with flange): 27.4 cm \/ 10.8 in\u003c\/li\u003e\n\u003cli\u003eDepth: 26.7 cm \/ 10.5 in\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCertifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUL 1561\u003c\/li\u003e\n\u003cli\u003eMeets ABYC E-11.7.1\u003c\/li\u003e\n\u003cli\u003eABYC C-1500 (for ignition protection)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.\u003c\/strong\u003e\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 634003\u003c\/p\u003e","brand":"ASEA Power Systems","offers":[{"title":"Default Title","offer_id":47479322706082,"sku":"106085","price":3650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/106085XL.jpg?v=1785228576"},{"product_id":"asea-power-systems-12-kva-isolation-transformer-111440","title":"ASEA Power Systems 12 kVA Isolation Transformer MPN - 634103","description":"\u003cp\u003e\u003cstrong\u003e12 kVA Isolation Transformer\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eASEA’s Isolation Transformer is a drop-in replacement for Charles IsoG2, designed to protect vessel under-fittings from galvanic corrosion and to shield onboard electronics from reverse polarity and shore power fluctuations. It also ensures safety by preventing the boat from sending unintended electric currents into the surrounding water.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIgnition-protected, safe for gasoline-powered vessels\u003c\/li\u003e\n\u003cli\u003eComplete Electrical Isolation prevents dockside ELCI breaker trips\u003c\/li\u003e\n\u003cli\u003eMaintains a safer marine environment by mitigating the risk of ESD\u003c\/li\u003e\n\u003cli\u003eEnsures clean and stable AC power for on-board equipment\u003c\/li\u003e\n\u003cli\u003eReduces galvanic corrosion\u003c\/li\u003e\n\u003cli\u003eMeets the latest NEC 555.35 marina code that ensures GFPE limits are not exceeded\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInput Voltage: 240VAC\u003c\/li\u003e\n\u003cli\u003eInput Current: 50 A\u003c\/li\u003e\n\u003cli\u003eOutput Voltage: 240VAC\u003c\/li\u003e\n\u003cli\u003eOutput Current: 50 A\u003c\/li\u003e\n\u003cli\u003eOutput Frequency: 60 Hz\u003c\/li\u003e\n\u003cli\u003eWeight 160 lbs\u003c\/li\u003e\n\u003cli\u003eHeight: 27cm \/ 10.6 in\u003c\/li\u003e\n\u003cli\u003eWidth: 26cm \/ 10.2 in\u003c\/li\u003e\n\u003cli\u003eWidth (with flange): 33 cm \/ 13 in\u003c\/li\u003e\n\u003cli\u003eDepth: 26.7 cm \/ 10.5 in\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCertifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eABYC E-11 Compliant\u003c\/li\u003e\n\u003cli\u003eABYC C-1500 (for ignition protection)\u003c\/li\u003e\n\u003cli\u003eUL 1500 (for ignition protection)\u003c\/li\u003e\n\u003cli\u003eUL 1561\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstrong\u003eThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns.\u003c\/strong\u003e\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 634103\u003c\/p\u003e","brand":"ASEA Power Systems","offers":[{"title":"Default Title","offer_id":47480500093090,"sku":"111440","price":4950.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/111440XL.jpg?v=1785234350"},{"product_id":"victron-isolation-transformer-4500w-auto-115-230v-114094","title":"Victron Isolation Transformer 4500W Auto 115\/230V MPN - ITR050452042","description":"\u003cp\u003e\u003cstrong\u003eIsolation Transformer 4500W Auto 115\/230V\u003c\/strong\u003e\u003c\/p\u003e\u003cp data-pasted=\"true\"\u003eSafety and prevention of galvanic corrosion - The Isolation Transformer eliminates any electrical continuity between AC shore power and the boat. It is essential for safety and eliminates the need for galvanic isolators and polarity alarms.\u003c\/p\u003e\u003cp\u003eSafety is taken for granted in the case of a normal onshore installation. A circuit breaker or a GFCI (Ground-Fault Circuit Interrupter) will trip in the event of a short circuit or current leakage to ground. Connecting the ground wire of the shore-side supply to the metal parts of the boat will result in galvanic corrosion (see below). Bringing only the live and neutral wire on board results in an unsafe situation because GFCIs will not work, nor will a fuse blow in case of a short circuit to a metal part on the boat.\u003c\/p\u003e\u003cp\u003eGalvanic corrosion occurs when two dissimilar metals in electrical contact are simultaneously exposed to an electrically conducting fluid. Seawater and, to a lesser extent, fresh water are such fluids. In general, the more active alloy of the couple corrodes preferentially while the less active (more noble) material is cathodically protected. The rate of galvanic corrosion is a function of several variables including area ratios, conductivity of the fluid, temperature, nature of the materials, etc.\u003c\/p\u003e\u003cp\u003eIt is a misunderstanding that galvanic corrosion occurs only in metal and aluminium hulls. In fact it can occur on any boat as soon as a metallic part (the shaft and propeller) is in contact with water. Galvanic corrosion will quickly dissolve your sacrificial anodes, and attack the shaft, propeller and other metal parts in contact with water as soon as the boat is connected to the shore -side supply.\u003c\/p\u003e\u003cp\u003eIt might therefore be tempting not to connect the ground conductor: this is however e xtremely dangerous because GFCIs will not work nor will a fuse blow in case of a short circuit to a metal part on the boat.\u003c\/p\u003e\u003cp\u003eThe best solution to avoid galvanic corrosion and at the same time prevent any uns afe situation is to install an Isolation Transformer to connect to the shore-side supply.\u003c\/p\u003e\u003cp\u003eThe Isolation Transformer eliminates any electrical continuity between shore power and the boat. The shore power is fed to the primary side of the transformer and the ship is connected to the secondary.\u003c\/p\u003e\u003cp\u003eThe Isolation Transformer completely isolates the boat from the shore ground. By connecting all metal parts to the neutral output on the secondary side of the transformer, a GFCI will trip or a fuse will blow in case of a short circuit.\u003c\/p\u003e\u003cp\u003eSoft start is a standard feature of a Victron Energy isolation transformer. It will prevent the shore power fuse from blowing due to the inrush current of the transformer, which would otherwise occur.\u003c\/p\u003e\u003cp\u003eIt is also recommended, for optimal safety, to connect the secondary neutral of the transformer to ground when the boat is out of the water.\u003c\/p\u003e\u003cp\u003e4500 Watt Auto 115\/230 V - This model will automatically switch to 115 V or 230 V supply, depending on input voltage.\u003c\/p\u003e\u003cp\u003eSupply 88 V – 130 V: switches to 115 V supply\u003c\/p\u003e\u003cp\u003eSupply 185 – 250 V: switches to 230 V supply range.\u003c\/p\u003e\u003cp\u003eNote: The AC input voltage is raised by 1:1.05 ratio at the AC output.\u003c\/p\u003e\u003cstrong\u003ePlease contact your dealer for any returns, repairs or support issues related to this product.\u003c\/strong\u003e\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e ITR050452042\u003c\/p\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":47480833573026,"sku":"114094","price":743.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0696\/3170\/5250\/files\/114094XL.jpg?v=1785237683"}],"url":"https:\/\/marinerswarehouse.com\/collections\/marine-shore-power-isolation-transformers.oembed","provider":"Mariners Warehouse Shop","version":"1.0","type":"link"}