Minel Trafo

What Minel Trafo does

Minel Trafo DOO is a Serbian private manufacturer of distribution and specialty transformers, headquartered in Mladenovac and operating continuously since its founding on 17 May 1958. Its core output consists of oil-filled distribution transformers rated up to 36 kV and up to 4000 kVA, offered in both copper- and aluminum-winding variants and engineered for low losses and low noise in line with European Union Eco Design recommendations. The portfolio extends into a range of special-purpose transformers — regulating, grounding, converter, auto-, dry-type, reactors, and Petersen coil units — and includes the licensed Shingle Core Trafo® wound-core platform.

Production is performed end-to-end in-house at a single facility: magnetic cores are cut on GEORG machines using the step-lap method, windings are produced on STOLLBERG machines, drying and vacuum processing use three dryers with a combined 140 m³ capacity, and final electrical testing is conducted in a company laboratory. The facility is certified to ISO 9001 (twenty years standing) and ISO 14001, and Minel Trafo states ability to build to FN, GOST, BS, and other international standards. Cumulative production exceeds 159,000 transformers, with a historical peak of roughly 6,000 units in 1980.

The company operates a direct, sales-led go-to-market model: inquiries are received via website contact form, phone, and email, and translated into custom-engineered quotes against project specifications. Distribution is handled directly to end customers, and exports have reached more than 55 countries. Pricing is not publicly disclosed and is set per inquiry based on configuration, reflecting a project-based engineered-to-order revenue model rather than standardized product sales. Primary customer segments are power distribution utilities and industrial operators (including renewable energy and converter-station applications).

Name

Minel Trafo

Legal name

Minel Trafo DOO

Website

https://minel-trafo.com

Company type

Private

Founded year

1958

Operating status

Operating

Headcount range

51–100 employees

Short description

Minel Trafo DOO is a Serbian transformer manufacturer, founded in 1958 and based in Mladenovac, producing oil-filled distribution transformers up to 36 kV / 4000 kVA and specialty transformers for utilities and industrial customers across 55+ countries.

Ownership category

akta.pro rank

Product category

Power Distribution Transformer Manufacturing

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Power, Distribution & Specialty Transformers (3612)

akta.pro primary industry

Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)

akta.pro secondary industries

High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA), DER Connection Hardware & Interconnection Equipment (Transformers, Reclosers, PCC) (EUADALAL), Medium/Low-Voltage Power Distribution (MCCs, Panels, UPS, Grounding) (EUAEAFAB), Reactive Power & Power Quality Equipment (Capacitor Banks, Reactors, STATCOM/SVC, Harmonic Filters) (IMAGAAAG)

Keywords

• Distribution transformers
• Oil transformers
• Transformer manufacturing
• Power distribution equipment
• Electrical transformers

Headquarters

HQ city

Mladenovac

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Technology or R&D

Revenue model

1. Transformer Manufacturing: Manufacturing and sale of distribution oil transformers up to 36 kV and rated power up to 4000 kVA, along with specialized transformers including regulatory, grounding, converter, auto-transformers, dry transformers, reactors, and Petersen coil transformers.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Minel Trafo designs and manufactures oil-filled distribution transformers up to 36 kV and 4000 kVA, with copper or aluminum windings, compliant with EU Eco Design recommendations for low loss and low noise. The portfolio also includes specialized transformers: regulating, grounding, converter, auto-transformers, dry transformers, reactors, and Petersen coil transformers, with capability to meet FN, GOST, BS and other international standards. The company is the licensee of Shingle Core Trafo® wound core technology and produces magnetic cores on GEORG machines with step-lap cutting and windings on STOLLBERG machines, with all assembly, vacuum drying, and final testing done in-house.

Product overview

Minel Trafo DOO is a transformer manufacturing company with over 60 years of experience (established 1958) producing distribution oil transformers and special transformer types. The core product portfolio centers on oil-filled distribution transformers with copper or aluminum windings (up to 36 kV, up to 4000 kVA), supplemented by specialized transformers including regulating transformers, grounding transformers, converter transformers, auto-transformers, dry transformers, reactors, and Petersen coil transformers. The company also holds a license for Shingle Core Trafo® wound core technology. All production is conducted in-house including magnetic core manufacturing (using GEORG step-lap cutting machines), winding (using STOLLBERG machines), drying, vacuum processing (in 3 dryers with 140 m3 total capacity), and final laboratory testing. Products comply with EU Eco Design requirements for low losses and noise levels, with capability to meet FN, GOST, BS, and other international standards.

Differentiator

Problem solved

Functional benefit

Brands

• Shingle Core Trafo®: Special type of transformer with wound core technology for which Minel Trafo holds a manufacturing license.

Products and services

• Oil Distribution Transformers with Copper Windings
• Oil Distribution Transformers with Aluminum Windings
• Regulating Transformers
• Grounding Transformers

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Shingle Core Trafo® Technology LicensorcoreOEM/ Whitelabel/ Licensing PartnerMinel Trafo is the owner of a license for the technology of production of a special type of transformer with wound core - Shingle Core Trafo®. This proprietary licensed technology represents a core part of their product differentiation and manufacturing capability.

Scale indicators10 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Siemens Energy Transformers: Global energy OEM with large installed base in distribution and power transformers up to and beyond 36 kV; competes in the same EU distribution-transformer tenders as Minel Trafo but at much larger scale and broader portfolio.
• ABB (Hitachi Energy): Major transformer manufacturer producing distribution, power, and dry-type transformers with global service network; directly comparable product overlap with Minel Trafo's oil distribution and specialty lines.
• Schneider Electric Transformers: Manufactures oil-immersed and dry-type distribution transformers (e.g., Trihal, Minera) for utilities and industrial customers across Europe; overlaps with Minel Trafo's core distribution-transformer offering.
• Eaton Transformers: Power management company with significant European distribution-transformer manufacturing footprint; comparable in voltage class (up to 36 kV) and customer base of utilities and industrial operators.
• Legrand (Zucchini cast-resin and oil transformers): European electrical equipment group producing distribution transformers including oil-immersed and cast-resin units; competes with Minel Trafo in mid-voltage distribution transformer tenders.

Direct peers

• TMC Transformers: Italian manufacturer of oil-immersed distribution transformers with similar power/voltage ratings (up to 36 kV, several MVA range) and EU Eco Design focus — closely comparable mid-sized European specialist.
• SEA (Società Elettromeccanica Arzignanese): Italian mid-sized manufacturer of distribution and power transformers up to ~36 kV with custom-engineered specialty units; directly comparable in scale, product mix, and European utility/industrial customer base.

Regional players

• ELIN Motoren (变压器业务/ transformer portfolio): Austrian/Central European transformer and rotating-machine manufacturer with overlapping custom transformer offerings for industrial and converter applications; serves similar DACH/Central European customer base as Minel Trafo.
• Končar (Distribution Transformers): Croatian manufacturer of oil-immersed distribution transformers and specialty units; serves similar Balkan/Central/Eastern European utility markets where Minel Trafo exports and competes.

Emerging players

• Instrument Transformers Inc. Manufacturer of specialty/special-purpose transformers including grounding and specialty units; partial overlap with Minel Trafo's specialty transformer lines (grounding, auto, reactors) at lower volume and more niche applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/mineltrafo
• Facebookfacebook.com/minel.trafo

Compliance2 records

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 Minel Trafo