Switchgear

Maddox switchgear comes in pad-mounted and metal-enclosed configurations for your padmount or unit substation transformer.

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One padmounted switchgear unit and two metal-enclosed switchgear units

Pad-mounted Metal-enclosed Get Started

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Pad-mounted

Description

15 kV double-door design
Up to 4 bays
Multiple switch and fuse configurations available
UL listed
Meets or exceeds IEEE C37.74
Munsell Green hi-gloss finish suitable for heavy-duty applications
Ideal for publicly accessible outdoor installations

Low-profile
Tamper-proof
Lockable

Standard specs

Nominal: 14.4 kV
Maximum design: 15.5 kV
BIL: 95 kV
Main bus continuous: 600 amps
Load interuppting: 600 amps
Short-circuit RMS symmetrical: 25 kA
3-time duty cycle fault closing RMS asymmetrical: 40 kA
Frequency: 60 hertz
Maximum altitude: 3300 feet
Fuse unit: type DBU, 15 kV, standard speed (E)

Optional upgrades

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

Metal-enclosed

Description

5/15 kV
General purpose switches
Current-limiting clip-lock fusing options (up to 600E for 5 kV applications and up to 300E for 15 kV applications)
Optional close-couple kit
UL listed and CSA approved
Meets or exceeds IEEE C37.20.3
11-gauge steel construction
ANSI 61 gray powder coating for a durable, lasting finish

Standard specs

Maximum rated voltage: 15 kV
Main bus continuous: 600 Amps
Fault close asymmetrical: 40 kA
Momentary switch closed asymmetrical: 40 kA
2 second short-time Current RMS symmetrical: 25 kA
BIL: 95 kV
Space heater circuit w/ thermostat (requires 120 VAC external power source)
Provision for kirk key interlock
Mechanism and contacts: copper-silver plated
Frequency: 60 hertz
Maximum altitude: 3300 feet
Line terminals: ANSI segment 3
Load terminals: ANSI segment 1
Enclosure: NEMA 3R, outdoor/indoor

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

Get Started

We make it easy to get a quote and order a switchgear. 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 switchgear

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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