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  1. Home
  2. AC Power
  3. Shore Power
  4. Transformers

Transformers




Shore power transformers for voltage conversion and isolation purposes.
Read our blog post on the relative merits of isolation transformers and galvanic isolators

Products [8]

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Victron Energy ITR040362041 Isolation Transformer 3600W 115/230V 32/16A
Victron Energy ITR040362041 Isolation Transformer 3600W 115/230V 32/16A
$703.00 $597.55 Sale
In stock
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Victron Energy ITR000702001 Isolation Transformer 7000W 230V
Victron Energy ITR000702001 Isolation Transformer 7000W 230V
$960.00 $816.00 Sale
Temporarily out of stock - normally available within two weeks
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Victron Energy ITR000100001 Autotransformer 120/240VAC-32A
Victron Energy ITR000100001 Autotransformer 120/240VAC-32A
$531.00 $451.35 Sale
In stock
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Victron Energy ITR000100101  Autotransformer 120/240V-100A
Victron Energy ITR000100101 Autotransformer 120/240V-100A
$599.00 $509.15 Sale
Temporarily out of stock - normally available within two weeks
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Victron Energy ITR050362041 Isolation Transformer 3600W with autodetect input voltage
Victron Energy ITR050362041 Isolation Transformer 3600W with autodetect input voltage
$743.00 $631.55 Sale
In stock
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Victron Energy ITR040202041 Isolation Tr. 2000W 115/230V
Victron Energy ITR040202041 Isolation Tr. 2000W 115/230V
$468.00 $397.80 Sale
Temporarily out of stock - normally available within two weeks
Add To Cart
ASEA 12 kva Dock Boost Transformer
ASEA 12 kva Dock Boost Transformer
$7,800.00
Special order takes approx 4 weeks
Add To Cart
ASEA 3.6 kva Ignition Protected Isolation Transformer
ASEA 3.6 kva Ignition Protected Isolation Transformer
$3,200.00
Special order takes approx 4 weeks
Add To Cart
pagination

Frequently Asked Questions

Updates to ABYC Standards for Transformers.

The August 2025 update to ABYC E11, which goes into effect in August 2026, had some updates relating to transformers.  With the 2025 revision of ABYC E-11, toroidal transformers are now compliant with the standard, provided the device and installation meet the outlined requirements.

Toroidal transformers use doughnut shaped coils instead of the conventional arrangement.  All the transformers we sell from Victron Energy are toroidal.  This kind of design is compact, and produces lower noise than conventional transformers.  It is also more efficient meaning less heat is produced and ventilation requirements are easier.  The following excerpt from the  ABYC Technical Newsletter explains:

How Things Worked Before 2025

  • Before 2025, E-11 only allowed encapsulated, dry-type transformers using laminated cores. These transformers had to include a metal shield between the primary and secondary windings and a metal case with a grounding terminal. Because toroidal transformers typically do not have an internal metal shield and often come in a non-conductive plastic case, most of them did not meet these requirements. This made it difficult for boat owners and installers who wanted to use toroidal transformers.

New Requirements in the 2025 Revision of  E-11

  • All encapsulated dry-type transformers must meet UL 1561
  • A metal case is no longer required and only transformers with a metal case need a grounding terminal
  • A Metal Shield is not required if an ELCI breaker is installed on the input

Transformers that meet the standard

Since the closure of Charles Marine the availability of transformers that comply fully with ABYC standards has been very limited.  The Victron Energy transformers that we sell do not have UL 1561 certifications.  The ASEA transformers we sell are not toroidal transformers but they do meet the ABYC standards.  As of now the selection is rather limited.  One company that does make toroidal transformers in a non-metallic case is Bridgeport Magnetics.  I cannot say if they meet the standards or not, we do not currently have the ability to sell these even though we have requested a dealership on numerous occasions.  The new standard will certainly have gone a long way towards making them closer to being ABYC compliant.

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