Triad Magnetics’ autotransformer power transformers are available in single winding step-up transformer models, in which the primary coil is a fraction of the entire winding, and step-down transformer models, in which the secondary coil is a fraction of the entire winding.

Standard double wound power transformers feature isolated primary and secondary coils, so all power transfer is conducted by induction. Autotransformers transfer power in between coils in part conductively through the windings. This leads to increased efficiency, smaller size, a higher degree of voltage regulation, and other important benefits.

Triad offers 14 different autotransformer power transformers, including a universal isolation/autotransformer/voltage control model capable of operating at an output wattage rating of 4,000 output watts.

The specification table below details the capabilities of each of these models. To learn more, contact Triad Magnetics today.

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Item #

Output Wattage (VA) Rating

Primary Voltage

Mounting Width

Mounting Depth

Mounting Hole Size

Nominal Secondary Voltage

View CAD

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N/A 250 W N/A 115 V N/A 2 1/2 in N/A 2 7/16 in N/A 3/8 x 3/16 in N/A 230 V N/A
N/A 250 W N/A 230 V N/A 2 1/2 in N/A 3 1/2 in N/A 3/8 x 3/16 in N/A 115 V N/A
N/A 85 W N/A 230 V N/A 2 1/4 in N/A 2 5/8 in N/A 3/8 x 3/16 in N/A 115 V N/A
N/A 150 W N/A 115 V N/A 2 1/4 in N/A 2 1/8 in N/A 3/8 x 3/16 in N/A 230 V N/A
N/A 150 W N/A 230 V N/A 2 1/4 in N/A 2 7/8 in N/A 3/8 x 3/16 in N/A 115 V N/A
N/A 200 W N/A 230 V N/A 2 1/4 in N/A 2 1/4 in N/A 13/64 x 3/8 in N/A 115 V N/A
N/A 150 W N/A 277 V N/A 2 13/16 in N/A 2 in N/A 13/64 x 3/8 in N/A 115 V N/A
N/A 500 W N/A 115 V N/A 3 in N/A 3 5/8 in N/A 3/8 x 3/16 in N/A 230 V N/A
N/A 600 W N/A 230 V N/A 3 in N/A 3 7/8 in N/A 3/8 x 3/16 in N/A 115 V N/A
N/A 1,000 W N/A 115 V N/A 3 1/2 in N/A 4 1/8 in N/A N/A 230 V N/A
N/A 1,250 W N/A 230 V N/A 3 1/2 in N/A 4 1/2 in N/A N/A 115 V N/A
N/A 2,000 W N/A 230 V N/A 3 1/2 in N/A 6 7/8 in N/A N/A 115 V N/A
N/A 50 W N/A 230 V N/A 3 1/8 in N/A N/A 3/16 in N/A 115 V N/A CAD Icon (for items table)
N/A 100 W N/A 230 V N/A 3 5/8 in N/A N/A 3/16 in N/A 115 V N/A
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