Intertrafo
Intertrafo is a Finnish specialty manufacturer based in Turku that designs and produces transformers, inductors, and power supplies (including interMED medical and interMARINE marine lines) and distributes third-party power-electronics brands to industrial, healthcare, marine, railway, and signage customers within Addtech Group's Energy business area.
- Company typePrivate
- Founded-
- HeadquartersTurku, Finland
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Intertrafo does
Intertrafo is a Finnish specialty manufacturer of electrical components — principally transformers (safety voltage, isolation, control voltage, 3-phase, medical, marine, audio, rail), inductors/chokes, and power supplies (linear and switching, LED drivers, chargers, inverters, DC-DC converters) — based at a single production and warehouse facility at Unkarinkatu 16, Turku. Its underlying technology is conventional electromagnetic engineering: enamel-insulated copper or aluminum windings on laminated, toroidal, ferrite, or planar iron cores, with proprietary product families interMED (medical isolation transformers, FI-approved, 1,000+ units installed in Finnish and foreign hospitals), interMARINE (DNV GL type-approved marine/offshore transformers), and interLED (professional LED signage products). Certified to FI, UL/CSA (OBJY2, XPTQ), DNV GL, and EN 61558, the company supplies both standard catalog items and fully customer-specific designs.
Intertrafo's business model combines proprietary manufacturing with multi-brand distribution. Roughly half of revenue mechanics flow from custom and standard transformer/power supply manufacturing sold via direct B2B quoting, with the remainder from distribution of represented brands (MEAN WELL, GE Current, Standex, Nextys, TDK-Lambda, Tufvassons, EagleRise, Power Europe, Premium PSU, Adelsystem, Polylux, Zettler). Pricing is quote-based with no public list, and contracts appear to span multi-year relationships. Customer segments span industrial manufacturing (primary), healthcare/medical, marine & offshore, signage & advertising, and railway transportation, with go-to-market executed through a sales-led direct motion, a quote-request web funnel, and trade-show presence at Sähkö Valo Tele Av, Alihankinta, and Teknologia.
Since April 2022, Intertrafo has operated as a transformer production unit of Tampereen Sähköpalvelu Oy (TSP Oy), part of the Swedish stock-listed Addtech Group's Energy business area alongside Tufvassons (Sweden) and Breve-Tufvassons (Poland). Intertrafo Oy was formally merged into TSP Oy effective February 1, 2024, while continuing to operate under the Intertrafo brand, with 11–50 employees and no disclosed financials.
Intertrafo firmographics
Firmographics- Name
- Intertrafo
- Legal name
- Tampereen Sähköpalvelu Oy
- Website
- https://intertrafo.fi
- Company type
- Private
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Intertrafo is a Finnish specialty manufacturer based in Turku that designs and produces transformers, inductors, and power supplies (including interMED medical and interMARINE marine lines) and distributes third-party power-electronics brands to industrial, healthcare, marine, railway, and signage customers within Addtech Group's Energy business area.
- Ownership category
- akta.pro rank
Intertrafo industry classification
Industry- Product category
- Industrial Electrical Components
- NAICS
- Power, Distribution, and Specialty Transformer Manufacturing (335311), Other Electrical Equipment and Component Manufacturing (3359), Wiring Device Manufacturing (33593)
- SIC
- Power, Distribution & Specialty Transformers (3612), Electronic Coils, Transformers & Other Inductors (3677), Electronic Components & Accessories (3670)
- akta.pro primary industry
- Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)
- akta.pro secondary industry
- Power Supplies, Batteries & Charging Components Retail (CRACAKAD)
Keywords
Where Intertrafo is headquartered
LocationHeadquarters
- HQ city
- Turku
- HQ country
- Finland
- HQ region
- Europe
Offices1 record
Markets served
Intertrafo business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales
Revenue model
- Custom Transformer Manufacturing: Design and manufacture of customer-specific transformers, inductors, and power supplies tailored to individual application requirements. Products include safety voltage transformers, isolation transformers, autotransformers, medical transformers, and marine transformers.
- Standard Product Sales: Sales of standardized transformer and power supply products including protection voltage transformers, control voltage transformers, LED power supplies, and chokes from represented brands.
- Represented Brand Distribution: Distribution of branded power electronics products including MEAN WELL, GE Current, Standex, Nextys, TDK-Lambda, Tufvassons, and other manufacturers' power supplies and LED signage components.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom and standard product pricing |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels3 records
Intertrafo product offering
Product offeringCore offering
Intertrafo designs and manufactures transformers, inductors, chokes, and power supply units (linear and switching, AC/DC) available both as standard catalog products and fully custom-engineered units. The company also distributes branded power electronics and LED signage products from MEAN WELL, GE Current, Standex-Meder, Nextys, TDK-Lambda, Tufvassons, and other manufacturers to industrial, medical, marine, railway, and signage customers in the Nordic, Baltic, and broader European markets.
Product overview
Intertrafo is a Finnish transformer manufacturer that designs and manufactures electrical components including transformers (safety voltage, isolation, control voltage, 3-phase, medical, marine, audio, rail), inductors/chokes, power supplies (linear and switching), and LED signage lighting products. The core offering consists of their own Intertrafo/InterMED/InterMARINE branded transformers and power supplies, complemented by distributed brands including MEAN WELL power supplies, Nextys power supplies, GE LED modules and power supplies, and StandexMeder planar transformers. Products are available as standard catalog items or custom-designed to customer specifications. The company operates as a production unit of Tampereen Sähköpalvelu Oy (TSP) following a 2024 merger and belongs to the Addtech Energy business area.
Differentiator
Problem solved
Functional benefit
Brands
- interMED: Medical isolation transformers for healthcare facilities
- interMARINE
- interLED
- InterLED
Products and services
- Transformers (Muuntajat) Transformers including safety voltage transformers, isolation transformers, control voltage transformers, 3-phase transformers, marine and offshore transformers, medical isolation transformers, audio transformers, rail transformers, and chokes/inductors. Available as standard catalog products or fully customer-specific designs.
- Power Supplies (Teholähteet) Power supplies including linear and switching power supplies, LED power supplies, chargers, inverters, and DC-DC converters, available as standard models or customer-specific configurations.
- LED Signage Lighting (InterLED) InterLED product family comprising professional-grade LED modules for illuminated advertisements, LED accessories, and LED power supplies including GE Tetra LED modules, GE Tetra PowerStrip, GE Tetra Contour NEON LED solutions, and GE Tetra LED Tape.
- Customer-Specific Products Custom-designed and manufactured transformers, inductors, power supplies, adapters, and assemblies tailored to specific customer requirements.
- Medical Isolation Transformers (interMED) Medical-grade isolation transformers for healthcare facilities with insulation level monitoring equipment. FI-approved and installed in over 1,000 units across Finnish and international hospitals and health centers.
- Marine and Offshore Transformers (interMARINE) DNV GL type-approved transformers designed for marine and offshore applications, including single-phase and 3-phase variants engineered for corrosion and vibration resistance.
- MEAN WELL Power Supplies Distributed MEAN WELL AC/DC power supplies, DC/DC converters, DC/AC inverters, LED drivers, battery chargers, medical-grade power supplies, and accessories in DIN-rail, modular, enclosed, open-frame, and rack-mount configurations.
- Nextys Power Supplies Distributed Nextys brand power supplies including DIN-rail units, DC-DC converters, UPS systems, battery monitoring and charging systems, and special power supplies for industrial applications.
- GE LED Modules Distributed GE Current Tetra LED modules including Select TX GEN 2, Tetra miniMax, Tetra Max, Tetra PowerMax, Tetra EdgeStrip, Tetra MiniStrip, Tetra PowerStrip, Tetra Contour NEON LED tape, Tetra Contour LS LED bar, and Tetra LED Tape.
- GE LED Power Supplies Distributed GE branded LED power supplies for signage lighting applications, up to IP65 enclosure class, including constant current, constant voltage, and dimmable models.
- Standex-Meder Planar Transformers and Inductors Distributed high-efficiency planar transformers and inductors from Standex-Meder with power range from 10W to 30kW featuring direct heat dissipation into frame or cooling elements.
- Inductors and Chokes (Kuristimet) Traditional chokes built with windings and iron cores with air gaps, toroidal chokes made from iron dust or ferrite materials, and current-compensated and differential form inductors used in switching power supplies and mains interference filters.
Quantifiable outcome
- Up to 79% energy savings compared to fluorescent tubes with GE Tetra PowerStrip LED systems
- +1 more outcomes
Companies that use Intertrafo
Customer profileNamed customers1 record
Segments5 records
Ideal customer profiles5 records
Intertrafo technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Intertrafo partnerships and signals
Strategic signalPartnerships
13 partnerships are on record, tiered core and minor.
- MEAN WELLcoreIntertrafo serves as distributor for MEAN WELL power supplies including AC/DC power supplies, LED drivers, DC/DC converters, DC/AC inverters, battery chargers, and medical-grade power supplies. Product range covers DIN-rail, modular, enclosed, open-frame, and rack-mount configurations.
- GE CurrentcoreDistributor of GE Current LED signage products including Tetra LED modules, Tetra Contour NEON LED systems, Tetra PowerStrip, and Tetra LED Tape for illuminated advertising applications.
- Standex (StandexMeder)minorDistributor of StandexMeder Planar transformers and inductors, featuring power range from 10W to 30kW with direct heat dissipation capability for high-efficiency applications.
- NextysminorDistributor of Nextys brand power supplies including DIN-rail units, DC-DC converters, UPS systems, battery monitoring and charging systems for industrial applications.
- TDK-LambdaminorDistributor of TDK-Lambda branded power supply products as part of the Addtech Energy business area.
- TufvassonscoreSister company within Addtech Energy group. Tufvassons Ab (Sweden) and Breve-Tufvassons Sp.z o.o (Poland) operate as transformer factories alongside Intertrafo, enabling shared expertise and expanded inductive product portfolio across Nordic and Central European markets.
- EagleRiseminorRepresented brand for power electronics products.
- Power EuropeminorRepresented brand for power electronics products.
- Premium PSUminorRepresented brand for power supply products.
- AdelsystemminorRepresented brand for power electronics and power supply solutions.
- PolyluxminorRepresented brand for professional lighting and power solutions.
- Zettler ElectronicsminorRepresented brand for electronics components including relays and power products.
- Standex ElectronicsminorRepresented brand for Planar transformers and inductors as well as standard reed switches and sensors.
Scale indicators3 records
Recent moves8 records
Expansion highlights5 records
Intertrafo competitors and assessment
Company assessmentBroad incumbents
- Würth Elektronik: Large European electronic components manufacturer with a transformer and inductor portfolio serving industrial and renewable customers; broader incumbent with overlapping magnetics and power-conversion offerings.
- MEAN WELL: World's largest standard power-supply manufacturer; core distributed brand for Intertrafo but also competes in the broader industrial/medical power-supply space with much greater scale.
- TDK-Lambda: Global power supply manufacturer and one of Intertrafo's represented brands; broader industrial/medical/rail portfolio but overlaps directly in switch-mode and DIN-rail power supplies that Intertrafo distributes and competes against.
Direct peers
- Talema Group: European-based transformer and inductor manufacturer serving industrial, medical, and audio applications; comparable custom and standard catalog transformer offering with similar European SME scale.
- Hammond Manufacturing: North American transformer and enclosure manufacturer with broad industrial and medical-grade product lines; directly comparable in custom transformer design and UL/CSA certified medical isolation.
- Triad Magnetics: US-based transformer and inductor manufacturer with medical, industrial, and audio transformer lines; comparable in custom magnetics and certified isolation transformer offerings.
- Block Transformatoren: German manufacturer of transformers, chokes, and power supplies for industrial, medical, and railway applications — directly comparable in custom/standard transformer range and certification footprint (EN 61558, UL, medical).
- Tufvassons: Swedish transformer manufacturer and direct sister company within Addtech Energy; produces transformers and inductors for industrial, railway, and energy customers across the Nordics — the closest functional and corporate peer to Intertrafo.
- Standex Electronics (StandexMeder): Manufactures planar transformers and inductors (10W–30kW) that Intertrafo distributes in Finland; same core technology and customer overlap in power electronics and industrial OEM markets.
- Myrra (Premier Farnell / Myrra Group): European manufacturer of transformers, chokes, and power supplies for industrial and consumer OEM customers; overlaps with Intertrafo's safety, isolation, and control transformer lines.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Intertrafo social profiles
Digital presenceIntertrafo compliance and trust
Trust signalCompliance4 records
Intertrafo financial estimates
Financial estimateRevenue estimate
Valuation estimate
Intertrafo leadership team
Management profileNumber of profiles
Profiles4 records
Intertrafo funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Intertrafo 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 Intertrafo
What does Intertrafo do?
Intertrafo designs and manufactures transformers, inductors, chokes, and power supply units (linear and switching, AC/DC) available both as standard catalog products and fully custom-engineered units. The company also distributes branded power electronics and LED signage products from MEAN WELL, GE Current, Standex-Meder, Nextys, TDK-Lambda, Tufvassons, and other manufacturers to industrial, medical, marine, railway, and signage customers in the Nordic, Baltic, and broader European markets.
Is Intertrafo a public or private company?
Intertrafo is a private company. It is classified as corporate owned and is currently operating.
When was Intertrafo founded?
Intertrafo was founded in -1. It employs 11 to 50 people.
Where is Intertrafo based?
Intertrafo is headquartered in Turku, Finland, in the Europe region.
How does Intertrafo make money?
Three revenue lines are on record. Custom Transformer Manufacturing is the primary driver. The others are standard Product Sales and represented Brand Distribution.
Who are Intertrafo's main competitors?
Broad incumbents on record are Würth Elektronik, MEAN WELL and TDK-Lambda. Direct peers are Talema Group, Hammond Manufacturing, Triad Magnetics, Block Transformatoren, Tufvassons, Standex Electronics (StandexMeder) and Myrra (Premier Farnell / Myrra Group).
Does Intertrafo have an API?
No public API is recorded for Intertrafo.
What industry is Intertrafo in?
Intertrafo's product category is Industrial Electrical Components. Its primary akta.pro industry code is IMAGAAAA, Transformers (Power, Distribution, Instrument, Specialty), with a secondary code of CRACAKAD, Power Supplies, Batteries & Charging Components Retail. Its NAICS code is 335311 and its SIC code is 3612.