Thermik
Thermik Gerätebau GmbH is a privately held German manufacturer of bimetal-based protective temperature limiters, PTC thermistors, and custom PTC heating elements, supplying OEMs in the electric motor, transformer, heating equipment, and household appliance industries through direct B2B sales and global distribution.
- Company typePrivate
- Founded1970
- HeadquartersSondershausen, Germany
- Headcount501–1,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What Thermik does
Thermik Gerätebau GmbH is a privately held German industrial manufacturer headquartered in Sondershausen, Germany, that has specialized since 1970 in temperature protection components. Its core products are protective temperature limiters (Schutztemperaturbegrenzer) built on bimetal switch technology — the S01, S05, and S06 series — covering temperature ranges from 60°C to 250°C and amperage classes from 1.6A to 75A. The company cites a proprietary spring disc (Federscheiben) design as a mechanical differentiator that improves the switching behavior of its bimetal-based limiters, alongside a portfolio of PTC thermistors (70–180°C) for overcurrent and overtemperature protection, and customer-specific PTC heating elements developed under co-engineering arrangements.
The company operates as a direct B2B supplier to OEM manufacturers across several end markets: electric motor manufacturers, transformer producers, heating equipment makers, and household appliance brands. Itself certified by Deutsche Standards as a Weltmarktführer (world market leader) in temperature limiters, Thermik claims an installed base exceeding 3 billion units and operates four production facilities spread across three continents, supported by more than 30 contract warehouse distributors serving over 30 countries. The workforce is reported at more than 900 employees, with production occupying 20,000 square meters, and the company maintains the broadest visible set of global safety certifications in its category — VDE, UL 873/2111, CSA, CQC, ENEC, IEC, and CMJ — together with ISO 9001:2015 from TÜV.
Revenue is generated through hardware sales of catalog temperature limiters and PTC thermistors, supplemented by custom development work for brand manufacturers acting as a development supplier (Entwicklungslieferant). The company markets primarily through direct enterprise sales, an interactive multilingual product finder on its website, downloadable technical catalogs in eight languages, and international sales representation. Management is led by Marcel P. Hofsaess, Geschäftsführer. Thermik is independent and privately held with no disclosed institutional investors, parent entities, funding rounds, or M&A activity in the input data.
Thermik firmographics
Firmographics- Name
- Thermik
- Legal name
- Thermik Gerätebau GmbH
- Website
- https://thermik.de
- Company type
- Private
- Founded year
- 1970
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- Thermik Gerätebau GmbH is a privately held German manufacturer of bimetal-based protective temperature limiters, PTC thermistors, and custom PTC heating elements, supplying OEMs in the electric motor, transformer, heating equipment, and household appliance industries through direct B2B sales and global distribution.
- Ownership category
- akta.pro rank
Thermik industry classification
Industry- Product category
- Thermal Protection Components
- NAICS
- Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)
- SIC
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Refrigeration & Service Industry Machinery (3580)
- akta.pro primary industry
- Thermistors & Temperature Sensors (NTC/PTC/RTD Elements) (HDAHANAH)
- akta.pro secondary industries
- Thermal Management Components (Heat sinks, TIMs, fans/blowers, thermal pads) (IMAGAJAL), Cold Chain & Temperature-Controlled Storage Equipment (IMAHAKAJ)
Keywords
Where Thermik is headquartered
LocationHeadquarters
- HQ city
- Sondershausen
- HQ country
- Germany
- HQ region
- Europe
Offices1 record
Markets served
Thermik business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Temperature Limiter Sales: Sale of protective temperature limiters (Schutztemperaturbegrenzer) based on bimetal technology. Products are sold directly to OEM customers including motor manufacturers, transformer producers, heating device makers, and household appliance manufacturers.
- PTC Thermistor Sales: Sale of PTC thermistors for overcurrent and overtemperature protection, serving as an alternative to bimetal-based limiters with higher and individual switching cycles
- Custom PTC Heating Elements: Customer-specific PTC heating elements developed in collaboration with brand manufacturers as part of development partnership arrangements
Go-to-market motion1 record
Distribution channels2 records
Marketing channels3 records
Thermik product offering
Product offeringCore offering
Thermik manufactures and sells bimetal-based protective temperature limiters (Schutztemperaturbegrenzer) across S01, S05 and S06 series covering 60–250 °C, PTC thermistors for overcurrent and overtemperature protection (70–180 °C), and customer-specific PTC heating elements. Products are sold directly to OEM customers in the electric motor, transformer, heating appliance and household appliance industries as a development supplier and innovation partner.
Product overview
Thermik Gerätebau offers a unified product portfolio centered on temperature security solutions. The core offerings consist of protective temperature limiters based on bimetal technology (S01, S05, S06 series) for temperature ranges from 60°C to 250°C, and PTC thermistors for overcurrent/overtemperature protection in the 70-180°C range. Additionally, the company provides custom PTC heating elements as customer-specific solutions. The product line is characterized by spring disc technology that improves switching behavior, and is backed by the company's claimed position as world market leader with over 3 billion temperature limiters in use.
Differentiator
Problem solved
Functional benefit
Products and services
- Temperaturbegrenzer S01 (Protective Temperature Limiter S01)
Companies that use Thermik
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles4 records
Thermik technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Thermik partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Brand Manufacturers (OEM Development Partners)coreThermik serves as the most significant development supplier (Entwicklungslieferant) and reliable innovation partner for well-known brand manufacturers. The constructive engagement with products, processes, and desired applications drives new developments in temperature protection.
Scale indicators6 records
Recent moves5 records
Expansion highlights6 records
Thermik competitors and assessment
Company assessmentBroad incumbents
- STMicroelectronics: Global semiconductor manufacturer offering integrated temperature sensors and thermal management ICs for automotive, industrial, and consumer applications. Represents the solid-state alternative trajectory relative to Thermik's electromechanical limiters.
- Microchip Technology: Semiconductor company producing temperature sensors and thermal management ICs for embedded and industrial applications. Represents the integrated-circuit alternative to discrete thermistor/limiter solutions offered by Thermik.
- Texas Instruments: Major analog semiconductor supplier with a broad portfolio of temperature sensors and thermal monitoring ICs. Comparable as a competing temperature-sensing technology provider, though at very different scale and architecture.
- Honeywell International: Diversified industrial conglomerate offering thermal sensors, switches, and controls across HVAC, aerospace, and industrial automation. Overlaps with Thermik in temperature-sensing components but as part of a much broader portfolio.
- Murata Manufacturing: Large Japanese electronic components manufacturer with a significant portfolio of PTC and NTC thermistors for automotive, consumer, and industrial markets. Comparable in PTC thermistor product category but at substantially greater scale.
Regional players
- WIKA: German-headquartered specialist in temperature measurement and instrumentation, including thermistors and temperature switches for industrial applications. Comparable to Thermik in thermal sensing expertise, with stronger presence in industrial process measurement.
- JUMO: German manufacturer of temperature sensors, thermostats, and controllers for industrial and process applications. Competes with Thermik in select European OEM and industrial thermal-protection sockets.
Direct peers
- Therm-O-Disc (Emerson): A long-established manufacturer of bimetal temperature controls and thermal limiters serving appliance, HVAC, and automotive markets. Directly comparable to Thermik in core product category, switching mechanism, and OEM customer base.
- Selco Products: Manufacturer of thermal protectors, thermostats, and temperature controls for OEM applications. Competes with Thermik in bimetal and PTC-based thermal protection devices across appliance and industrial end markets.
- Cantherm (by SenSym): Producer of thermal protectors, NTC/PTC thermistors, and temperature sensors used in motors, transformers, and appliances. Closely comparable product portfolio and customer overlap with Thermik.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Thermik social profiles
Digital presenceThermik compliance and trust
Trust signalCompliance7 records
Thermik financial estimates
Financial estimateRevenue estimate
Valuation estimate
Thermik leadership team
Management profileNumber of profiles
Profiles1 record
Thermik funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Thermik 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 Thermik
What does Thermik do?
Thermik manufactures and sells bimetal-based protective temperature limiters (Schutztemperaturbegrenzer) across S01, S05 and S06 series covering 60–250 °C, PTC thermistors for overcurrent and overtemperature protection (70–180 °C), and customer-specific PTC heating elements. Products are sold directly to OEM customers in the electric motor, transformer, heating appliance and household appliance industries as a development supplier and innovation partner.
Is Thermik a public or private company?
Thermik is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Thermik founded?
Thermik was founded in 1970. It employs 501 to 1,000 people.
Where is Thermik based?
Thermik is headquartered in Sondershausen, Germany, in the Europe region.
How does Thermik make money?
Three revenue lines are on record. Temperature Limiter Sales are the primary driver. The others are PTC Thermistor Sales and custom PTC Heating Elements.
Who are Thermik's main competitors?
Broad incumbents on record are STMicroelectronics, Microchip Technology, Texas Instruments, Honeywell International and Murata Manufacturing. Regional players are WIKA and JUMO. Direct peers are Therm-O-Disc (Emerson), Selco Products and Cantherm (by SenSym).
Does Thermik have an API?
No public API is recorded for Thermik.
What industry is Thermik in?
Thermik's product category is Thermal Protection Components. Its primary akta.pro industry code is HDAHANAH, Thermistors & Temperature Sensors (NTC/PTC/RTD Elements), with a secondary code of IMAGAJAL, Thermal Management Components (Heat sinks, TIMs, fans/blowers, thermal pads). Its NAICS code is 334512 and its SIC code is 3585.