Failsafe Galvanic Isolator


Galvanic Isolator Guaranteed to Fail Safe under fault conditions, preserving the earth connection to your boat.

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Product Details

Plug in Galvanic Isolator. Guaranteed Fail Safe design for transient currents as high as 500A. Intended to preserve the electrical earth to the boat, whilst isolating from Galvanic currents. 

failsafe galvanic isolator fail safeDesigned and manufactured using high spec' silicon semiconductors integrally molded into heat-sinks, with the ability to deal with high earth fault currents.

Lifetime Warranty & Fail Safe Guarantee

Hull Materials: 
Steel, Aluminium, GRP & Wooden Hulls

Water Types:
Canal Water, River Water & Sea Water

More Information

Simple Plug & Play design, needing no electrical knowledge or tools to fit. This isolator simply plugs into the end of your electric hook up cable, and instantly provides protection against damaging Galvanic currents, (sometimes called "Corrosion Currents").
Surge Rating 500amps
Manufactured in the UK from high quality components.

failsafe logo galvanic isolator


FailSafe Guarantee
AC Bypass Capacitor
Made in United Kingdom
Unique Plug In Design
No Technical knowledge or tools needed

Weather & UV resistant 

Simply connects to either end of the mains hook up cable, and instantly protects your boat from Corrosion Currents, which can quickly deplete anodes, and damage your boats hull. Manufactured in the UK using top quality components.

galvanic isolator with capacitor

AC Bypass Capacitor fitted for 100% reliable operation.

Reduces Corrosion Currents through your electrical cable to ZERO. Guaranteed Effective

failsafe marine galvanic isolatorThis Galvanic Isolator is designed to STOP Galvanic 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 affects every boat unless a Galvanic Isolator is fitted.

Our In-line isolators do exactly the same job as "built-in" types, and can be fitted by ANYONE in a few seconds. No electrical knowledge or tools required. 

Simple "Fit & Forget" operation. The Galvanic Isolator works in the background, and requires no testing, or maintenance.

Manufactured in the UK from high quality components. FULL LIFETIME GUARANTEE.

in line galvanic isolator connectorsOur isolators are guaranteed Water resistant, Dustproof, Rustproof, Foolproof and virtually un-damagable. Suitable for Inland & Marine applications.

Fitted with standard 16a connectors.

If you have any questions, please message us using the eBay messaging system. We aim to reply to all messages within the hour. 


Specification Gi-120/P/FS
  • Voltage: 110 – 250Vac
  • Surge Current 500A
  • Connectors fitted: 16A
  • Temperature Range -50c to 120c
  • UV Resistant Arctic Yellow Cable
  • Fully Waterproof Body to IP66
  • Connectors Waterproof to IP44
  • Quality Construction
  • Fit & Forget operation
  • No Installation req'd
  • Plug & Play
  • FULL lifetime guarantee. Full Parts & Labour warranty.
  • Fail Safe guarantee. Replacement if unit fails open circuit.

The GI-120P/FS 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, type B preferred. If in doubt, please contact us or a qualified electrician.

About Us
best galvanic isolator for canal boats
Our Galvanic Isolators are built BY boaters FOR boaters. With over 40 years experience in the electronics industry, we are committed  to producing products that will give you years of service. Fe are a family business, and sell direct to the public, and also have distributorships in the Cayman Islands, and the Canary Isles. Technical advice is readily available, and even if you're not "techy", please don't hesitate to contact us with any questions, and we'll be happy to answer without blinding you with science.

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We accept payment by PayPal, and Credit/Debit card. To pay by card, just select Pay Pal, then use their "Guest Checkout" option.


We post goods every day of the week - including weekends. The vast majority of parcels are posted the very same day we receive your order. We use Royal Mail for our deliveries. Parcels are tracked but don't need to be signed for.

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We aren't happy until you are. So if you've bought the wrong item, or have just changed your mind - don't worry - we'll take it back (and we'll even be pleasant about it).

how to contact galvanic isolator company
Need more info, got a query, or just fancy talking to us? Please message us through eBay. You'll find us helpful before, during and after your purchase. Technical assistance gladly given. We're available all day, every day.