When properly installed, Charles Marine Isolation transformers will electrically isolate the AC shore power from the boat's AC power system. The boat's electrical system and the grounding conductor are not actually connected to the shore-side power. There is no direct electrical connection between earth-grounded shore AC power and the onboard electrical system. The shore ground is connected to a shield that is wound between the primary (shore) and the secondary (boat) transformer winding. The connection of this grounding wire only to the shield of the transformer isolates the boat's AC electrical system from shore.
Compliance with independent testing lab requirements maximize safety Marine UL listing ensures durability and safety
New European CE EMC Certification (50hz models)
Greatly reduced potential for in-water shock hazard
Eliminates the need for polarity alarms and galvanic isolators
Superior technology guarantees top performance
Fully-encapsulated components and transformer windings
Full current carrying shield per ABYC E-8.20.1
Easy to install and use
Occupies less space and easier to install than most units
Terminal blocks for easy customer connections
3.6 KVA and 12 KVA units mount to either bulkhead or deck. 24 KVA unit mounts to deck only.
Corrosion-resistant housing and components
Convection-cooled enclosure meets the intent of NMEA 3R requirements.
We are pleased to announce our new shipping promotions below. These rates apply to your entire order*!
||6 to 10 Business Days
||1-6 Business Days
|3 Day Shipping
||3 Business Days
|2 Day Shipping
||2 Business Days
|1 Day Shipping
||1 Business Day
*These offers apply to in-stock orders to the lower 48 states only. We cannot include shipments to Alaska, Hawaii, Puerto Rico or any other US Territory. Please call or email us for rates to these locations. Oversized packages are also excluded for 3, 2, and next day shipping. Items that are shipped freight are also excluded. Because we have many different warehouses around the United States we reserve the right to choose the carrier. Signature service can be requested for $3 extra.
We speak French, German, and Italian!
Please use the shipping calculator for an accurate shipping quote.
We ship via DHL International and USPS. Shipping insurance is optional but recommended and costs $5 for all international orders. Items that can fit in a flat rate envelope are shipped via flat rate service. Please keep in mind that USPS Flat Rate Priority Mail does not include detailed tracking and is not covered by insurance to certain countries. For a list of these countries please email us.
International order processing takes approx. 3-5 business days.
Many countries impose their own customs, duties, tariffs, taxes, etc... on items imported from the USA. We do not cover those costs.
The shipping transit times are approx. as follow:
|DHL International Economy:
||5-7 business days (trackable)
|USPS Express (EMS) Mail:
||1-2 weeks (trackable)
|USPS Global Priority Mail:
||2-3 weeks, (trackable)
|USPS Flat Rate Priority Mail:
||4-5 weeks (not trackable)