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Galvanic Isolators

Sacrificial zincs corrode away as they protect metal through hulls, shafts, and props from damaging electrolysis. Stray, low-voltage current flowing between the AC safety ground and DC bonding system is a principal cause of this“galvanic” action.

Installing the Galvanic Isolator between the AC safety ground and DC bonding system (see page 2), blocks most of the low voltage currents and corrosive action on the zincs is significantly reduced (while the integrity of the critical safety ground path is maintained.) This means a significant saving in boat haul-out fees and zinc replacement costs. For additional safety, all units feature a large capacitor, providing a secondary low-impedance path for sending AC current to the ground.

Newmar’s latest galvanic isolator meets the latest ABYC A-28 2019 including being failsafe. This new design can meet the strictest temperature and current tests to create a robust solution for galvanic protection.



  • Protects against corrosion
  • Maintains a safe environment
  • Certified to UL1500 standard for Ignition Protection
  • Tested to 50°C ambient temperature
  • The fail-safe feature ensures ground maintenance
  • Connection in the event of isolator failure


  Galvanic Isolator 30 A Galvanic Isolator 60 A
Part Number 395-3030-FS 395-3060-FS
Shore Power Voltage 115–230V 115–230V
Maximum Short Circuit 5000 Amps 5000 Amps
Stray Current Protection Up to 1.4 Vdc Up to 1.4 Vdc
Dimensions (LxWxH) 200 x 189 x 68.5 mm 260 x 190 x 65 mm