Wesemann
Wesemann Projects B.V. is a Dutch family-run transformer manufacturer, founded 1945 in Rotterdam, designing custom-built transformers, chokes, and power supplies for marine/offshore, energy, healthcare, oil and gas, and industrial clients.
- Company typePrivate
- Founded1945
- HeadquartersRotterdam, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Wesemann does
Wesemann Projects B.V. is a Dutch privately-held manufacturer founded in 1945 and headquartered in Rotterdam, Netherlands, specializing in the design and production of custom-built transformers, chokes, frequency convertors, UPS systems, and pre-magnetizing systems. Its portfolio spans cast resin, oil immersed, medium voltage, distribution, ferrite, toroidal, variable, and explosion-proof transformers, plus specialized power supplies with integrated customizable control panels for CT and MRI scanners. The firm positions itself as a total solution provider for technically demanding applications where standard catalog products are insufficient.
The company serves six core verticals: marine and offshore platforms, energy traction and renewable energy, utility/construction/healthcare, oil and gas, industrial custom builds, and explosion-proof installations. Customers are industrial installers and end-users reached through direct project sales, a dealer/reseller network, and a webshop (wesemann-online.com). Wesemann augments its own product line through a broad international partner ecosystem including Celme, Imefy, Hyosung, Hammond Power Solutions, Static Power, LEM, Pikatron, and RS Isolsec. Pricing is quote-based on bespoke specifications and is not publicly disclosed.
Quality and compliance are central to the value proposition. Wesemann holds KEMA, UL, and ISO 9001:2015 certifications (ISO 9001 since 1994), follows ISO 26000 for corporate social responsibility, and is a member of FME-CWM. Its proprietary pre-magnetizing system was entered into the Dutch Chamber of Commerce SME Innovation top 100 in 2016. The business is family-run with 11–50 employees and no disclosed external investment, funding rounds, or M&A activity.
Wesemann firmographics
Firmographics- Name
- Wesemann
- Legal name
- Wesemann Projects B.V.
- Website
- https://wesemann.nl
- Company type
- Private
- Founded year
- 1945
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Wesemann Projects B.V. is a Dutch family-run transformer manufacturer, founded 1945 in Rotterdam, designing custom-built transformers, chokes, and power supplies for marine/offshore, energy, healthcare, oil and gas, and industrial clients.
- Ownership category
- akta.pro rank
Wesemann industry classification
Industry- Product category
- Industrial Transformers
- NAICS
- Power, Distribution, and Specialty Transformer Manufacturing (335311)
- SIC
- Power, Distribution & Specialty Transformers (3612), Electronic Coils, Transformers & Other Inductors (3677)
- akta.pro primary industry
- Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)
- akta.pro secondary industries
- Power Transformers, Reactors & Auxiliary Power Systems (EUADACAJ), Instrument Transformers (CTs/VTs) & Sensors (Conventional/Optical) (EUADACAG), Transformer/Driver/Power Supply Service & Replacement (HSAIAHAL)
Keywords
Where Wesemann is headquartered
LocationHeadquarters
- HQ city
- Rotterdam
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
Wesemann business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales
Revenue model
- Transformer Manufacturing: Design and manufacture of high-end transformer solutions for industrial applications including marine, offshore, energy, utility, construction, healthcare, oil and gas, and custom industrial builds
- Transformer Maintenance Services: Maintenance services for transformers to ensure operational reliability and longevity
Go-to-market motion2 records
Distribution channels3 records
Marketing channels3 records
Wesemann product offering
Product offeringCore offering
Wesemann designs and manufactures high-end transformer solutions, chokes, frequency convertors, UPS systems, pre-magnetizing systems, and power supplies with integrated control panels for industrial installers and end-users. The company serves specialized sectors including marine and offshore, energy/traction/renewable energy, utilities and healthcare facilities, oil and gas, and demanding industrial applications, and also provides transformer maintenance services as a total solution provider.
Product overview
Wesemann is a transformer innovator since 1945, designing and manufacturing high-end transformer solutions for industrial installers and end-users. The company operates as a total solution provider offering a comprehensive portfolio of power-related products including various transformer types (cast resin, oil immersed, medium voltage, distribution, ferrite, toroidal, variable), frequency convertors, UPS systems, pre-magnetizing systems, power supplies with integrated control panels for medical imaging equipment, and instrument transformers. These products serve specialized sectors including marine and offshore, energy traction and renewable energy, utilities and healthcare facilities, oil and gas, and industrial applications with custom build solutions. The company also offers transformer maintenance services alongside its product portfolio.
Differentiator
Problem solved
Functional benefit
Products and services
- Transformers High-end transformer solutions for industrial installers and end-users across multiple sectors including marine/offshore, energy/traction/renewable, utilities, oil and gas, and industrial applications, including cast resin, oil immersed, medium voltage, distribution, ferrite, toroidal, and variable transformer types.
- Power Supplies with Integrated Control Panel for CT and MRI Scanners
Companies that use Wesemann
Customer profileSegments6 records
Ideal customer profiles5 records
Wesemann technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Wesemann partnerships and signals
Strategic signalScale indicators2 records
Recent moves6 records
Expansion highlights5 records
Wesemann competitors and assessment
Company assessmentDirect peers
- Hammond Power Solutions: Canadian designer and manufacturer of dry-type and cast resin transformers, reactors, and specialty magnetics. Comparable to Wesemann because both serve industrial custom-build and OEM transformer needs with custom-engineered magnetics, and Hammond is also a Wesemann distribution partner indicating strong product overlap.
- Trench Group: Global manufacturer of instrument transformers (current/voltage), coils, and power-quality solutions. Comparable to Wesemann's LV-MV instrument transformer and chokes/inductance coil offerings for power systems.
- SGB-SMIT Group: European power and distribution transformer manufacturer with custom engineering capability across industrial, traction, and renewable segments. Directly comparable to Wesemann as a specialty power transformer maker serving European OEMs and industrial customers.
- Celme S.r.l. Italian manufacturer of cast resin and dry-type transformers for industrial, renewable, and marine applications. Comparable specialty industrial transformer maker serving similar verticals as Wesemann and also a Wesemann distribution partner.
- Hyosung Heavy Industries (Transformer Division): Korean manufacturer of large power and distribution transformers with European service operations. Comparable to Wesemann on industrial-grade power transformer design/build; also a stated Wesemann channel partner.
- Imefy Group: Spanish manufacturer of cast resin and oil-immersed distribution and power transformers for industrial and renewable applications. Directly comparable to Wesemann's cast resin and distribution transformer lines serving industrial and energy customers.
Broad incumbents
- Siemens Energy Transformers: Major OEM of power, distribution, and special-purpose transformers for utilities, marine, and industrial customers. Broad incumbent competitor to Wesemann with overlapping marine/offshore and industrial segments.
- Schneider Electric (Transformers / EIC): Global electrical equipment manufacturer with a portfolio of distribution transformers, UPS systems, and power-quality products. Overlaps with Wesemann's transformer and UPS offerings within Schneider's broader portfolio.
- Eaton (Transformers / Power Quality): Global electrical manufacturer offering dry-type transformers, UPS systems, and power-quality products. Broad incumbent relevant as a competitor to Wesemann across industrial and mission-critical power applications.
- ABB Electrification (Hitachi Energy): Global incumbent offering power, distribution, and specialty transformers across utility, industry, and rail. Directly overlaps with Wesemann's portfolio but operates at much larger scale; relevant as the dominant incumbent Wesemann competes with.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks6 records
Key highlights7 records
Customer concentration
Wesemann social profiles
Digital presenceWesemann compliance and trust
Trust signalCompliance4 records
Wesemann financial estimates
Financial estimateRevenue estimate
Valuation estimate
Wesemann leadership team
Management profileNumber of profiles
Profiles1 record
Wesemann funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Wesemann M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Wesemann
What does Wesemann do?
Wesemann designs and manufactures high-end transformer solutions, chokes, frequency convertors, UPS systems, pre-magnetizing systems, and power supplies with integrated control panels for industrial installers and end-users. The company serves specialized sectors including marine and offshore, energy/traction/renewable energy, utilities and healthcare facilities, oil and gas, and demanding industrial applications, and also provides transformer maintenance services as a total solution provider.
Is Wesemann a public or private company?
Wesemann is a private company. It is classified as family owned and is currently operating.
When was Wesemann founded?
Wesemann was founded in 1945. It employs 11 to 50 people.
Where is Wesemann based?
Wesemann is headquartered in Rotterdam, Netherlands, in the Europe region.
How does Wesemann make money?
Two revenue lines are on record. Transformer Manufacturing is the primary driver. The others are transformer Maintenance Services.
Who are Wesemann's main competitors?
Direct peers on record are Hammond Power Solutions, Trench Group, SGB-SMIT Group, Celme S.r.l., Hyosung Heavy Industries (Transformer Division) and Imefy Group. Broad incumbents are Siemens Energy Transformers, Schneider Electric (Transformers / EIC), Eaton (Transformers / Power Quality) and ABB Electrification (Hitachi Energy).
Does Wesemann have an API?
No public API is recorded for Wesemann.
What industry is Wesemann in?
Wesemann's product category is Industrial Transformers. Its primary akta.pro industry code is IMAGAAAA, Transformers (Power, Distribution, Instrument, Specialty), with a secondary code of EUADACAJ, Power Transformers, Reactors & Auxiliary Power Systems. Its NAICS code is 335311 and its SIC code is 3612.