General Purpose Low Voltage Dry-Type Transformer

Air-cooled low voltage transformers are ideal for power distribution below 600v.

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Low voltage dry type general purpose transformer


3-Phase 208V Delta - 380 Y/219 (Step Up)

3-Phase 208V Delta - 240D/120 (Step Up Transformer)

Starting at $1,402

3-Phase 480V Delta - 208 Y 120

3-Phase 480V Delta - 208Y/120 Low voltage dry type transformer

Starting at $885

3-Phase 480V Delta - 240V Delta/120

3-Phase 480 D - 240 Y 139 (Drive Isolation Transformer)

Starting at $885

3-Phase Autotransformer 600-480-400-240-208v

3-Phase Autotransformer 600-480-400-240-208v

Starting at $619

To see our full inventory of low voltage products visit our webstore and filter by sku, voltage, or transformer type. If the unit you are looking for is not available on our webstore, or you need additional assistance please fill out the form at the bottom of this page.

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Low Voltage general purpose transformers in storage

    Maddox 600v transformers are designed, built, and tested in accordance with the highest industry standards including NEMA, ANSI C.57, DOE, and IEEE as applicable. Whether your low voltage power need is indoors or outdoors, Maddox specializes in 600v transformers that can be customized for both step-up and step-down power distribution, energy storage, and machine-tool applications.

    Product Scope

  • kVA range: 5 kVA - 1,000 kVA
  • Voltage range: Up to 800v

Technical Specs

Low voltage three phase transformer core

Standard specs

  • Self-cooled (AA)
  • Aluminum windings
  • Voltage adjustment taps
  • Impedance 5.75% (±7.5%)
  • NEMA 3R indoor/outdoor enclosure​
  • High-grade silicon-steel core
  • 150 degree rise
  • VPI windings
  • Stub-up/down bus
  • Stainless steel hardware

Optional upgrades

  • Copper windings
  • 80C or 115C degree rise
  • Solar step-up design
  • Electrostatic shielding
  • K-rated design
  • Double-thick varnish for corrosion protection
  • Grounding/zig-zag design
  • NEMA 4X enclosure
  • TENV design (totally enclosed, non-ventilated)
Get Started
We make it easy to get a quote and order a transformer. Follow the steps below to get started.

Request a Quote

Call or fill out the form below to get a quote. Most quotes are turned around the same or next-day.

Place your order

Send us a purchase order, or give us a credit card number, and your dedicated customer service rep will send you an order confirmation and answer any questions you may have.

Receive your transformer

We’ll handle all transportation and logistics. Maddox has the shortest lead times in the industry so you can get the power on when you need it.

"We ordered transformers to use for our industrial equipment applications due to market shortages for our standard stepdown transformers. Delivery was incredibly quick and products look and operate without issue. Priced very well in comparison to other outlets - very happy to utilize Maddox in the future for our continued needs."

Todd Griffieth, ops manager

"I have purchased dozens of Maddox transformers, both low voltage dry-types and large reconditioned medium voltage units. Always great service and quality builds, with faster than industry standard lead-times."

Eric Raybould, distributor

"Quick delivery with helpful friendly staff. Great service and highly recommended. A great company to work with on all your transformer needs."

Austin Spiegel, project manager

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Maddox low voltage dry type transformer installed