Galvanic Isolator (16a) Plug In with Status Alert

Surge Protection to 120 amps

Fitting a Plug In Galvanic Isolator couldn’t be simpler, because you don’t need any electrical knowledge or tools, and fitting takes about 30 seconds. And it’s guaranteed to work just as well as the wire-in type. 

status monitorede galvanic isolator showing how lights indicate different fault conditionsThis model offers several real benefits over standard galvanic isolators.

The most obvious benefit is the Status Alert Indicator, which constantly monitors your boats earth connection for faults that could lead to corrosion of the hull, or even life threatening mains voltage earth leakage faults.

Bright, easy to read indicators on the galvanic isolator warn you immediately a problem is detected.


Under the bonnet, there is our “2-stage Protection System”, which protects your hull against electrical noise and Galvanic & Stray Voltages up to twice as high as normal galvanic isolators.

image showing how electrical noise can adversely affect the operation of galvanic isolators2-Stage Protection is advised where you have electrical items with Switch Mode power supplies.

Most battery chargers, mobile phones, computers, TV’s etc have these, and some of them can introduce electrical “Noise” into your boats electrical system. In extreme cases, the noise can defeat single stage galvanic isolators, so we have developed the 2-Stage Protection System to give you added protection.

How It Works…

Check your earthing at a glance.

galvanic isolator how to read fault indicator lightsBoth Lights OFF: Your galvanic isolator is operating normally, so no action is required – just check back occasionally to ensure that all’s well.

One Light ON: If either of the lights are on, it indicates DC leakage. This can cause severe corrosion to your boat. Our instructions give clear basic advice on how to resolve the problem.

BOTH lights ON: If both lights are ON, this indicates AC leakage, probably from the mains wiring or a connected appliance. AC leakage can be a danger to life. Please see instructions for help in rectifying the problem.


electrical supply post on marina shown with plug in galvanic isolator connected to protect the boats hull from corrosion

Our Gi50/16/SA Plug In Galvanic Isolator simply connects between your shore supply and the mains inlet of your boat. You can fit it at either the boat end or the shore end. The picture shows it fitted at the shore end.


  •    Status Alert Indicators

  •    2-Stage Protection

  •    Uses NO power

  •    100% Maintenance Free

  •    30 Seconds to Fit

  •    Fit & Forget operation

This Galvanic Isolator is designed to STOP Galvanic AND Leakage currents in their tracks, whilst ensuring that the safety electrical earth is unaffected. So you remain FULLY PROTECTED from electrical faults. Its a quick, simple no-compromise solution to the corrosion that YOUR boat will almost certainly be suffering unless you have an Isolator fitted. Plus our 2-Stage Protection System gives you protection against voltages of up to TWICE that of normal isolators.

Plug In galvanic isolator with 16a plugs

galvanic isolator with 5 years guarantee against faults. Long lasting galvanic isolator that protects your boats anodes and hullThe Gi50/16/SA galvanic isolator is fully guaranteed for 5 years against faulty materials and manufacture.

Furthermore, we offer a FREE checking service for your peace of mind. (You may want to get your galvanic isolator checked in the event of a major electrical fault, lightning strike etc).


16a galvanic isolator connector with dimensions. You must have the right isolator to match your marinas mains supply and your boats electrical input sockets or the connections won't fitIf your mains connecting cable has a socket that matches the measurement in the photo, this is the correct galvanic isolator for you.





IN STOCK for immediate dispatch.

Prices INCLUDE postage in UK. Please contact us for international shipping costs.

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Galvanic Isolator Specification

  • Voltage: 110 – 250Vac
  • Through Current 16A
  • Surge Current 120A
  • Temperature Range -50c to 120c
  • Fully Waterproof body to  IP66
  • Connectors Waterproof to IP44
  • Quality Construction
  • Fit & Forget operation
  • 30 second install time
  • DC Status monitoring: YES
  • AC Status Monitoring: YES
  • 2-Stage Protection: YES

The GI50/16/SA galvanic isolator is suitable for shore supplies that are protected by a RCD (Earth leakage circuit breaker) with a tripping current of 30mA or less, and MCB 16a or less. If in doubt, please contact a qualified electrician, or call us on 0757 807 3490