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The ISO-G2 provides reliable, affordable AC system protection and meets ABYC standards as a single-unit alternative to using a galvanic isolator/status monitor combination.

  • Isolates onboard systems from potential shore-side power hazards
  • Provides efficient, clean power for onboard systems


  • Terminal block included for easy connections
  • Full current carrying shield
  • Whisper-quiet operation
  • Compact design: 9.65" x 10.5" x 9", 76 lbs.
  • Designed specifically for marine environments
  • Meets ABYC and NMMA standards
  • Made in the U.S.A.

ISO-G2 Isolation Transformer


Product Number Specifications Weight
93-ISOG2/6-A 3.6 kVA, 30 Amps, 60 Hz, 120 VAC. 60 lbs.
93-ISOG2/8-A 3.8 kVA, 30/32 Amps, 50/60 Hz, 120/240 VAC 60 lbs.

Why use an Iso-Guard Isolation Transformer instead of
a Galvanic Isolator with Status Monitor?

Fully electrically isolates the boat's AC power from shoreside AC power

Does NOT electrically isolate the boat from shoreside power

Prevents galvanic corrosion Prevents galvanic corrosion
Easy installation, wiring and connection to ONE BOX and no need for external monitoring Installation, wiring and connection of 3 items:      galvanic isolator, monitor and remote panel
Does NOT require panel space Requires panel space for the remote
Eliminates the need for polarity alarm Does NOT eliminate the need for polarity alarm
No need for indicators due to poor shoreside grounding, faults etc., since these potential hazards will not be transferred to the boat's AC power. LED lights illuminate when there is a fault in the galvanic isolator or faulty shorepower. Each marina may vary; thus, requiring one-on-one trouble-shooting.



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