Low Voltage Dry-Type

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

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image of a low-voltage Maddox transformer

Capabilities Tech Specs Get Started

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

Starting at $619

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

Starting at $885

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

Starting at $1,402

3-Phase 480V Delta - 208 Y 120

Starting at $885

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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Capabilities

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

picture of a low voltage 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
NEMA 3R indoor/outdoor enclosure

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.

01

Request a Quote

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

02

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.

03

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.

"Over the last couple weeks Maddox responded quickly to our customers needs. They provided two transformers on a short time table allowing us to get our customer re-energized. One transformer was in stock, and shipped immediately. The second had to be reconditioned and they turned it around and shipped in just a few business days. Great service with good communication along the way."

Brian Rodgers, NETA level III tech

"My company ordered a new transformer from Maddox. Kurt was an AMAZING sales rep that listened to all my concerns and met them all with solutions that fit our timeline. Dale pulled off a miracle in getting our shipment on the road and delivered not only at the exact time I requested, but 2 hours early. I cannot express how happy I am with this company. They made me look like a hero! Which is exactly what THEY were to me."

Jen Glab, microgrid sales

"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

"Over the last couple weeks Maddox responded quickly to our customers needs. They provided two transformers on a short time table allowing us to get our customer re-energized. One transformer was in stock, and shipped immediately. The second had to be reconditioned and they turned it around and shipped in just a few business days. Great service with good communication along the way."

Brian Rodgers, NETA level III tech

"My company ordered a new transformer from Maddox. Kurt was an AMAZING sales rep that listened to all my concerns and met them all with solutions that fit our timeline. Dale pulled off a miracle in getting our shipment on the road and delivered not only at the exact time I requested, but 2 hours early. I cannot express how happy I am with this company. They made me look like a hero! Which is exactly what THEY were to me."

Jen Glab, microgrid sales

"Over the last couple weeks Maddox responded quickly to our customers needs. They provided two transformers on a short time table allowing us to get our customer re-energized. One transformer was in stock, and shipped immediately. The second had to be reconditioned and they turned it around and shipped in just a few business days. Great service with good communication along the way."

Brian Rodgers, NETA level III tech

"My company ordered a new transformer from Maddox. Kurt was an AMAZING sales rep that listened to all my concerns and met them all with solutions that fit our timeline. Dale pulled off a miracle in getting our shipment on the road and delivered not only at the exact time I requested, but 2 hours early. I cannot express how happy I am with this company. They made me look like a hero! Which is exactly what THEY were to me."

Jen Glab, microgrid sales

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