Metal-Enclosed Switchgear

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

Metal enclosed switchgear designed for safe switching and fusing protection for medium voltage systems. These units are a perfect addition for your unit substation transformer, providing easy and safe current interrupting capabilities.

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Interior of Maddox metal-enclosed switchgear

Switchgear Specifications

Voltage: 5 – 15 kV

Maddox metal enclosed switchgear are designed, built, and tested in accordance with the highest industry standards. They feature current-limiting clip-lock fusing options (up to 600E for 5 kV applications and up to 300E for 15 kV applications) with an optional close-coupling to transformers.

Standard Features

5 kV or 15 kV nominal voltage rating
600A main bus ratingAmps
Fault close asymmetrical: 40 kA
Momentary switch closed asymmetrical: 25 kA
BIL: 95 kV
Space heater circuit w/ thermostat (requires 120 VAC external power source)
Provision for kirk key interlock
Mechanism & contacts: copper-silver plated
Frequency: 60 hertz
Line terminals: ANSI segment 3
Load terminals: ANSI segment 1
Enclosure: NEMA 3R, outdoor/indoor
11-gauge steel construction
ANSI 61 gray powder coating for a durable, Lasting Finish

Optional Upgrades

27 kV designs
Dry-contact kit (2 normally open, 2 normally closed)
Customer metering
Multi-bay lineups
Surge arresters
Convenience light
Space heater switch
Duplex receptacle
Run back bus

Same Day Quotes

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 metal-enclosed switchgear 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 metal-enclosed 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.

Multi-Bay
Lineups

Multi-bay
Lineups

Multi-bay lineups combine multiple switchgear sections into a single integrated assembly, providing a compact way to connect and control multiple incoming and outgoing circuits.

NEMA 3R
Enclosures

NEMA 3R enclosures provide the same protection as NEMA 1 enclosures with additional protection against rain, sleet, and snow.

Space Heater
with Thermostat

Space heaters in metal-enclosed switchgear prevent condensation by maintaining a controlled internal temperature and reducing excess moisture buildup on electrical components.

Frequently Asked Questions

How is shipping arranged for Maddox’s metal-enclosed switches?

Maddox ships metal-enclosed switches anywhere in North America, handling all logistics at no additional charge. Request a quote here to get specific pricing and lead times.

How soon can you ship a Maddox metal-enclosed switch?

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.

Are Maddox metal-enclosed switches made in America?

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

Can I return or exchange a Maddox metal-enclosed switch?

Yes, Maddox metal-enclosed switches 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.

Metal-Enclosed Switchgear