Did you know? Category winner Isolation Transformers / Isolators

MASTERVOLT MASS GI 3.5 Isolation Transformer 16 A / 3.5 kW

SVB item number: 76503 Manufacturer no.: 88000355
View Ratings (1) Questions (1)
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Used on a Bavaria 46 Cruiser
Used on a Bavaria 35 Sport
Very good perfromance with minimum heat production! Mastervolt isolation tranformers protect your boat and provide you with safety through a correctly earthed AC power system. Available in two sizes.
Product details
Recommended retail price: €1,332.80
only  €1,199.95
-10%
You save: €132.85
4 | in stock
pcs.
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Available variants

MASS GI 7 Isolation Transformer 32 A / 7.0 kW
MASS GI 7 Isolation Transformer 32 A / 7.0 kW
MASTERVOLT MASS GI 7 Isolation Transformer 32 A / 7.0 kW
€2,380.00
only €2,179.95
VAT inc., ex-works
To product
by Simon V.
Quality material, silent I was worried about the noise a transformer could make. At 25% load (the equipment on board my boat doesn't require more power) and 25 degrees Celsius, the fan is always off and the unit makes no noise. The unit is relatively compact and lightweight, which makes installation easy.
Read all product reviews

Product data

  • SVB item number 76503
  • EAN 816882021022
  • Manufacturer no. 88000355
  • Description MASTERVOLT - MASS GI 3.5 isolation transformer
  • Input voltage 90 - 255 V
  • Output voltage 230, 115 V
  • Frequency 45 - 65 Hz
  • Max. Shore Power Input 16 A
  • Continous Power 3500 W
  •  Isolation Transformer Technology High-Frequency Technology
  • Soft Start Yes
  • Housing material Aluminium
  • IP protection class IP21
  • Data protocol MasterBus
  • Width 261 mm
  • Height 340 mm
  • Depth 144 mm
  • Weight 6 kg

Accessories

Image of MasterBus cable
MASTERVOLT MasterBus cable
from €10.90 (€21.80/ m)

Product details

Very good perfromance with minimum heat production! Mastervolt isolation tranformers protect your boat and provide you with safety through a correctly earthed AC power system. Available in two sizes.

A Mastervolt Isolation Transformer protects your valuable ship and offers the security of a correctly grounded alternating current system. Unusually light and compact, owing to ultramodern high frequency technology, the master volt isolation transformers have excellent performance. This makes them the perfect transformer for any system.

Features at a glance:

  • exceptionally light and compact
  • input voltage: 90 - 255 V and 45 - 65 Hz (for 120 and 230 VAC).
  • Capacity: 16 A / 3,5 kW – can be connected in parallel for higher capacity
  • soft-start function (manages the current resulting from connection to shore)
  • very good performance with minimal heat generation
  • dimension (HxWxD): 340 x 261 x 144 mm
  • weight: 5.5 kg

Documents

en-flag Datasheet
PDF (119,87 KB)
en-flag Manual
PDF (1,71 MB)

Product safety

Contacts

What other SVB customers have to say

100% real reviews

1 customer reviews

5 (out of 1 ratings)
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100% recommend SVB
All reviews Latest ratings 5
Simon V.
by Simon V. Flag of Switzerland 10/17/2025 Verified purchase Variant: 76503
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Quality material, silent
I was worried about the noise a transformer could make. At 25% load (the equipment on board my boat doesn't require more power) and 25 degrees Celsius, the fan is always off and the unit makes no noise.

The unit is relatively compact and lightweight, which makes installation easy.
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Comparison

Image of MASS GI 3.5 Isolation Transformer 16 A / 3.5 kW
MASTERVOLT
MASS GI 3.5 Isolation Transformer 16 A / 3.5 kW
Image of MASS GI 7 Isolation Transformer 32 A / 7.0 kW
MASTERVOLT
MASS GI 7 Isolation Transformer 32 A / 7.0 kW
Availability / Price
only €1.199 95
VAT inc., ex-works
Only 4 in stock
only €2.179 95
VAT inc., ex-works
Expected to be in stock within 4-6 days
Item no.
76503
65547
Customer ratings
(1)
(1)
Output voltage
230, 115 V
230, 115 V
Description
MASTERVOLT - MASS GI 3.5 isolation transformer
MASTERVOLT - MASS GI 7 isolation transformer
Width
261 mm
261 mm
Continous Power
3500 W
7000 W
Input voltage
90 - 255 V
90 - 255 V
Height
340 mm
340 mm
Depth
144 mm
250 mm
Weight
6 kg
10 kg
IP protection class
IP21
IP21
Frequency
45 - 65 Hz
45 - 65 Hz
Data protocol
MasterBus
MasterBus
Housing material
Aluminium
Aluminium
Max. Shore Power Input
16 A
32 A
Soft Start
 Isolation Transformer Technology
High-Frequency Technology
High-Frequency Technology

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MASTERVOLT MASS GI 3.5 Isolation Transformer 16 A / 3.5 kW
View Ratings (1) Questions (1)
€1,199.95
VAT inc., ex-works