Thermik

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.

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

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

• Temperature limiters
• PTC thermistors
• Bimetal switches
• Thermal protection devices
• Overtemperature protection

Headquarters

HQ city

Sondershausen

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. 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.
2. 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
3. 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

Core 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)

Named customers5 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Brand Manufacturers (OEM Development Partners)coreStrategic or Co-development PartnerThermik 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

Broad 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

• LinkedInlinkedin.com/company/thermik-technologies-sdn-bhd

Compliance7 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Thermik