Wired-In Galvanic Isolator 16/32a

Surge Protection to 120 amps

Wire In Galvanic Isolators are perfect if you’re fitting out your boat, or for retrofitting to an existing electrical installation.  Suitable for 16amp or 32 amp supplies.


  • Compact

  • NO Power Loss

  • Maintenance Free

  • Fit & Forget


Marine Galvanic IsolatorFitting is a straightforward job, involving breaking the earth conductor between the Mains inlet connector and the vessel’s distribution board.

The isolator can be mounted to just about any flat surface, and has a high strength double-sided adhesive on the rear, meaning that in many cases, it can be simply stuck to a surface.

Alternatively, it can be fixed using a selection of mounting options, including two elongated holes for easy alignment.

best galvanic isolatorFitting the isolator is a simple task, well within the capabilities of many d-i-y ers.

The isolator connects into your Earth connection using two 5mm studs, as shown in the photo.


When the Galvanic Isolator is installed, it will prevent Corrosion Currents from forming an electrical circuit using the shore lead’s earth connection.


galvanic isolaror guaranteeThe GI50/32 is fully guaranteed for 5 years against faulty materials and manufacture. We also offer a FREE checking service for your peace of mind. (You may want to get your Isolator checked in the event of a major electrical fault, lightning strike etc).


Installation simply involves disconnecting the earth cable from the mains input connector on your boat, and connecting it to one of the studs on the isolator. The other stud is then connected back to the mains connector earth terminal. In essence, this breaks the earth connection then uses the isolator to span the break.

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The Gi50/32/S comes complete with fitting instructions, and we are happy to offer fitting advice, where required.

If in doubt, please consult a qualified electrician




IN STOCK for immediate dispatch.

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

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  • Voltage: 110 – 250Vac
  • Suitable for 16 amp and 32 amp supplies.
  • Through Current 32A
  • Surge Current 120 amps
  • Temperature Range -50c to 120c
  • Sealed to IP61
  • Quality Construction
  • Fit & Forget operation
  • Width: 121mm,    Height: 66mm,  Depth 65mm  (Excluding studs 40mm)

The GI50/32/S 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 32a or less. If in doubt, please contact a qualified electrician, or call us on 0757 807 3490