Steeline Enclosures

What Steeline Enclosures does

Steeline Enclosures is a brand and product line of Motor Controls Inc (MCI), a privately-held industrial manufacturer headquartered at 10661 Newkirk St, Dallas, TX 75220. The company designs and manufactures electrical control panel enclosures, offering a portfolio of eight product lines: wall-mounted, floor-mounted, freestanding, disconnect, desktop console, and push-button enclosures, plus modified/custom solutions and a full accessories line. Enclosures are produced in Type 12, 4, and 4X configurations across materials including carbon steel, 304 and 316L stainless steel, aluminum, and galvanized steel, and the company has logged 40+ years of industry experience with 1,000+ completed projects.

The underlying technology is metal-fabrication-intensive rather than software-centric. Core technical differentiators include removable heavy-gauge continuous hinge designs (S-Series), foam-in-place two-component polyurethane resin gaskets for UL-approved Types 12/4/4X sealing, custom closed-cell polyisocyanurate foam insulation with foil facers, and precision-engineered C-Channel/I-Beam structural steel racks. Manufacturing is performed in-house at the Dallas facility using lasers, press brakes, and welding robots, with 100% of modifications executed on-site. Quality and compliance are anchored in ISO 9001:2015 certification and UL/cUL listings.

Commercially, Steeline operates a B2B direct-sales, quote-based model targeting enterprise OEMs, industrial automation companies, and operators across six primary verticals: industrial manufacturing and automation, oil and gas, water treatment, food and beverage, mining and heavy industry, and material handling and conveying. The sales motion is a four-step expert consultation process (consultation, tailored design, quality manufacturing, ongoing partnership), with inbound RFQs handled via email ([email protected]), phone (1-800-735-1097 / 972-354-4645), and website quote forms. Revenue derives from one-time hardware sales across standard enclosures, custom/modified enclosures, and accessories. The company has no disclosed public pricing, no disclosed revenue, no disclosed headcount, and no external funding; it sits within MCI's broader multi-brand portfolio that includes WET, Flowtronex, and Switch Gear.

Name

Steeline Enclosures

Legal name

Motor Controls Inc

Website

https://steelineenclosures.com

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

11–50 employees

Short description

Steeline Enclosures, a Dallas-based division of Motor Controls Inc, manufactures UL-listed electrical control panel enclosures (wall-mounted, floor-mounted, freestanding, disconnect, custom) for industrial OEMs and operators across manufacturing, oil and gas, water treatment, food and beverage, mining, and material handling.

Ownership category

akta.pro rank

Product category

Industrial Electrical Enclosures

NAICS

Relay and Industrial Control Manufacturing (335314), Sheet Metal Work Manufacturing (332322)

SIC

Electrical Industrial Apparatus (3620), Sheet Metal Work (3444)

akta.pro primary industry

Industrial Control Panels & Enclosures (Panel Building, MCCs, Integration) (IMAGABAJ)

akta.pro secondary industries

Enclosures, Boxes & DIN-Rail Hardware (junction boxes, cabinets, panel enclosures, DIN rail, gland plates) (IMAGAEAH), Substation Control Houses, Enclosures & Physical Infrastructure (EUADACAK)

Keywords

• Electrical enclosures
• Control panel enclosures
• Custom industrial enclosures
• NEMA enclosures
• Disconnect enclosures

Headquarters

HQ city

Dallas

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Infrastructure, Marketing or Sales

Revenue model

1. Standard Enclosure Sales: One-time hardware sales of standard electrical enclosures including wall-mounted, floor-mounted, freestanding, disconnect, desktop console, and push-button enclosures in various configurations (Type 12, 4, 4X)
2. Custom/Modified Enclosure Solutions: Custom-engineered enclosure solutions with modifications including precision cutouts, climate controls, custom finishes, and specialized configurations for unique applications
3. Accessories: Mounting panels, window kits, drip shields, leg stand kits, lighting kits, door stop kits, ground bar kits, light switches, and climate control accessories

Go-to-market motion1 record

Distribution channels2 records

Marketing channels2 records

Core offering

Steeline Enclosures manufactures and sells standard and custom electrical control panel enclosures — including wall-mounted, floor-mounted, freestanding, disconnect, desktop console, and push-button enclosures — in carbon steel, 304/316L stainless steel, aluminum, and galvanized steel, with Type 12, 4, and 4X configurations. The company offers 100% in-house modifications (cutouts, climate controls, custom finishes) at its Dallas, TX facility, targeting OEMs and industrial operators across manufacturing, oil and gas, water treatment, food and beverage, mining, and material handling.

Product overview

Steeline Enclosures is a manufacturer of electrical control panel enclosures offering a comprehensive portfolio of standard and custom enclosure solutions. The product lineup includes eight distinct product lines: Wall Mounted Enclosures (Type 12, 4, and 4X configurations), Floor Mounted Enclosures (Type 4 and 4X), Free Standing Enclosures, Disconnect Enclosures (Type 4 and 4X), Modified Standard/Custom Solutions, Desktop Console Enclosures, Push Button Enclosures, and a full range of Accessories including mounting panels, window kits, drip shields, leg stands, and climate control options. All enclosures are UL-listed and ISO 9001:2015 certified, with material options including carbon steel, 304 and 316L stainless steel, aluminum, and galvanized steel. The company provides 100% in-house modifications for custom solutions through their Dallas, TX manufacturing facility.

Differentiator

Problem solved

Functional benefit

Brands

• Motor Controls Inc (MCI): Parent company and sister brand; also operates WET, Flowtronex, and Switch Gear brands

Products and services

• Wall Mounted Enclosures

Quantifiable outcome

• 40+ years of industry experience providing practical solutions that work in real-world conditions
• +2 more outcomes

Named customers6 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• Motor Controls Inc (MCI)coreOthersSteeline Enclosures is a division/brand of Motor Controls Inc (MCI), a company that designs and manufactures technologically advanced products including pump control panels, water treatment systems, and electrical control solutions. Steeline serves as MCI's electrical enclosure product line.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Rittal: Global leader in industrial enclosures with comprehensive Type 12/4/4X wall-mount, floor-mount, and freestanding lines plus a deep North American configurator platform — the most direct comparand to Steeline's standard and custom enclosure product set.
• nVent (Hoffman brand): nVent's Hoffman brand is one of the largest North American enclosure manufacturers with extensive Type 12/4/4X offerings, in-house modifications, and broad UL listings — directly overlapping with Steeline's core product lines and verticals.
• Allied Moulded Products: Manufacturer of polycarbonate and fiberglass reinforced enclosures with Type 4/4X ratings — competes with Steeline in washdown and outdoor enclosures across food & beverage, water, and industrial automation.
• Stahlin Enclosures: US manufacturer specializing in non-metallic and fiberglass enclosures for corrosive environments with UL listings — overlapping with Steeline's Type 4X outdoor/corrosion-resistant offering, particularly in water treatment and oil & gas.
• Hammond Manufacturing: Long-established North American manufacturer of standard and modified electrical enclosures (wall-mount, freestanding, disconnect) in carbon and stainless steel — directly comparable product portfolio and customer base to Steeline.
• Saginaw Control & Engineering (SCE): US-based custom and standard electrical enclosure manufacturer with in-house modifications and UL-listed Type 4/4X configurations serving industrial automation and OEM customers — a tightly comparable sub-scale peer to Steeline.

Broad incumbents

• Schneider Electric (Enclosures / Spacial): Multinational industrial automation major whose Spacial and Thalassa enclosure lines cover the same Type 12/4/4X use cases as Steeline but as part of a much broader portfolio of drives, PLCs, and switchgear sold through global channels.
• Pentair (Hoffman equivalent / Technical Solutions): Diversified industrial platform with enclosure products serving water, oil & gas, and industrial customers — overlapping end markets and UL-rated enclosure portfolios with Steeline's vertical mix.
• Hubbell (Enclosures / polycarbonate): Hubbell's electrical solutions segment includes enclosures sold through electrical distribution channels — directly overlapping with Steeline's Type 4/4X product set but distributed through Hubbell's much larger industrial network.
• Eaton (B-Line / Wiring Solutions): Diversified industrial major with a substantial enclosures and metal framing business (formerly Cooper B-Line) targeting the same industrial automation, oil & gas, and water customers as Steeline, but at materially larger scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/MCIpumpstation
• Facebookfacebook.com/Motorcontrols
• LinkedInlinkedin.com/company/steeline-enclosures

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Steeline Enclosures