Products
Custom Transformer Cabinets & NEMA Enclosures
Custom transformer cabinets, NEMA 3R/4/4X metal enclosures, and pad-mount housings — fabricated, welded, and powder-coated entirely in-house.
Custom transformer cabinets, NEMA 3R/4/4X metal enclosures, and pad-mount housings — fabricated, welded, and powder-coated entirely in-house.
FabTek is a custom transformer cabinet manufacturer and contract sheet metal fabricator. We build metal transformer cabinets at hundreds per month on a single shift — and everything is done in-house, no exceptions, including paint.
For utilities, transformer OEMs, EPC contractors, and data center builders, single-source control means tighter tolerances, consistent finishes, and schedules you can plan around. Every cabinet is a domestic build under an ISO 9001:2015 quality system at our facilities in Hazlehurst, Mississippi.
High-volume custom metal transformer cabinets and enclosures, fabricated, welded, and powder-coated in-house.
Enclosures built to custom NEMA ratings for indoor and outdoor service.
Sealed, weather-rated housings and pad-mount enclosures for field durability.
Send drawings or a spec — we fabricate to print, welded and bolted.
FabTek transformer cabinets and enclosures house and protect the electrical apparatus at the heart of the grid.
Utilities and transformer OEMs rely on them to enclose pad-mounted and substation transformers, switchgear, metering, and control equipment — shielding energized components from weather, wildlife, and tampering while keeping them accessible for service. Across investor-owned utilities, public power, EPC substation builds, and hyperscale data centers, these NEMA-rated, powder-coated enclosures stand up to decades of outdoor duty in the field.
| Materials | Carbon steel, stainless steel, and aluminum |
|---|---|
| Sheet & plate | Light-gauge sheet through heavier plate, sized to the design |
| Enclosure ratings | NEMA 1, 3R, 4, and 4X — built to your specified rating |
| Construction | Single- and double-door, free-standing, wall-mount, and pad-mount |
| Finish | In-house powder coat; IEEE 2000-hour salt-spray rated |
| Welding | AWS-certified (GMAW / GTAW) |
| Production | Hundreds of units per month on a single shift |
| Quality & origin | ISO 9001:2015, OSHA-compliant, made in the U.S.A. |
| Engineering | Build-to-print and custom-spec |
| Also specified as | Transformer cabinet, transformer enclosure, NEMA enclosure, pad-mount housing, custom sheet metal enclosure |
Representative capabilities — exact ranges, ratings, and finishes are confirmed per project. Send drawings for a firm quote.
Each cabinet moves through our own shop end to end — no outsourced steps, including paint. That's how we hold tolerances and finish quality at volume.
Fabrication runs through our laser cutting, CNC press-brake forming, robotic plasma cutting, welding, and powder-coat finishing — see our full equipment and capabilities for the machines behind each step.
Built at four production sites in Hazlehurst, Mississippi.
ISO 9001:2015 quality management, AWS-certified welding, OSHA-compliant facilities.
In-house powder-coat backed by an IEEE 2000-hour salt-spray certification.
Hundreds per month on a single shift, and the automation to grow with your volume.
Yes — build-to-print and custom-spec, with all work done in-house including welding, bolted assembly, and powder-coat paint.
Yes — we produce custom NEMA-rated enclosures along with weatherproof and pad-mount housings for power and utility applications.
3R covers most outdoor utility service — rain, sleet, and falling dirt. Step to 4 when the enclosure sees hose-directed water or washdown, and 4X where corrosion or coastal salt is a factor. We build to the rating you specify, and our powder coat carries an IEEE 2000-hour salt-spray certification. See our guide to 3R vs. 4 vs. 4X.
All cabinets are manufactured in the United States at our facilities in Hazlehurst, Mississippi.
Explore related lines: Switchgear & panel enclosures · Transformer tanks · Bus ducts & busways · See all products
Further reading: How to spec a NEMA-rated transformer enclosure · NEMA 3R vs. 4 vs. 4X · Quality & compliance
Send drawings or a scope and we'll get you a real answer — typically within one business day.