Pad-Mounted Switchgear

Name: Padmount Transformers
Brand: Maddox Industrial Transformer
Availability: InStock
Rating: 4.8 (649 reviews)

Pad-mounted switchgear designed for underground switching and fusing protection for the distribution grid. With a low-profile lockable tamper proof design, these units are perfect for outdoor public installations.

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Maddox pad-mounted switchgear with door open

Maddox pad-mounted switchgear with both doors open

Bushings on Maddox pad-mounted switchgear

Switch handle on Maddox pad-mounted switchgear

Switchgear Specifications

Voltage: Up to 35 kV

Maddox tamper-proof, pad-mounted switchgear are designed, built, and tested in accordance with the highest industry standards including: UL listed and IEEE C37.74. They feature up to four bays with multiple switch and fuse configurations available.

Standard Features

Double-door design
Nominal: 14.4 kV
Maximum design: 15.5 kV
BIL: 95 KV
Main bus continuous: 600 amps
Load interrupting: 600 amps
Short-circuit withstand current (Sym.): 25 kA
3-time fault-close (Asym.): 40 kA
Frequency: 60 hertz
Maximum altitude: 3300 feet
Fuse unit: type DBU, 15 kV, standard speed (E)
Munsell green hi-gloss finish suitable for heavy-duty applications

Optional Upgrades

Live-front designs
6 compartment option (up to 5 switch & 5 fuse arrangements)
25 kV designs
DBU fuse speed variations: slow “E” and “K”

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Price and lead time today

3 Year Warranty

Backed by US-based support

USA Options

Made-in-America available

Hit Your Lead Time with Stock and Custom Options

Maddox keeps substation transformers in stock for fast deliveries and builds custom ones with some of the best lead times in the industry.

Stock

Hit project deadlines with common kVA sizes and voltages, in stock and ready to ship.

Custom

Build exactly what you need with extensive switchgear customizations available.

See How We Earned +800 Five Star Reviews

Maddox pad-mounted switchgear provide reliable power to critical projects across the United States.

Competitive pricing, always the most inventory, and exceptional after sales support. They are my "go to" option for transformers

David D.

This is my 5th order from Maddox. Always knowledgeable and helpful. Every transformer I have purchased has worked perfectly.

Jason W.

They have stock when others don't and are quick to ship and fill their orders. VERY THANKFUL we found them.

Mike A.

The transformer I ordered was delivered onsite at our project in two business days. Great service!

Jerome T.

Great company easy to deal with. Every transformer I buy will be from Maddox.

Austin M.

First time purchasing from Maddox. Was very easy and we are pleased with the results of our purchase.

Chris O.

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Fill out the form and we will get back to you as soon as possible. Our average response time during business hours is 30 minutes.

Meet Any Spec with Extensive Customizations

Meet your exact spec with customized transformers designed, built, and tested in accordance with the highest industry standards including NEMA, ANSI, DOE, and IEEE as applicable.

Live Front
Designs

Live front designs feature exposed energized components inside the cabinet, allowing for direct cable connections in a compact design.

Double Door
Design

Double door pad-mounted switchgear provides separate front compartments for cable access and switch operation, improving accessibility for installation, maintenance, and operation.

DBU
Fuse Unit

A DBU fuse unit provides system protection by isolating fault currents before equipment damage can occur, commonly used where fused protection is required.

Frequently Asked Questions

Do you stock 1200 amp switches?

No, Maddox stocks 600 amp 5 and 15 kV switches and 200 amp 5kV mini switches. Maddox offers 1200 amp switches, but they are made-to-order.

Are these equivalent to PME designs?

Yes, stock Maddox pad-mounted switchgear units are equivalent to standard PME designs. Let your rep know which ME design you need and they'll provide an equivalent option.

Do standard pad-mounted 15kV switches offer fusing above 200amps?

While the switch is rated for 600 amps, fuse manufacturers of common SMU-20, DBU, and CMU fuses do not manufacture sizes above 200 amps, so the industry is limited to 200 amps for this type of fusing which is used in standard pad-mounted designs.

How soon can you ship a Maddox pad-mounted switchgear unit?

Because Maddox stocks switchgear across the United States, we have many ready-to-ship units available. If you need a custom design, request a quote to receive pricing and lead time within 30 minutes.

Does Maddox stock American-made pad-mounted switchgear units?

Yes, Maddox stocks American-made pad-mounted switchgear. If your project requires BABA compliance, please notify your sales rep.

Can I return or exchange a Maddox pad-mounted switchgear unit?

Yes, Maddox pad-mounted switchgear units may be eligible for return or exchange within six months of shipment date. Terms and conditions apply. Learn about the Maddox return and exchange policy here.

Pad-Mounted Switchgear