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THERMONIE > About us

About us

Thanks to our almost 50 years of experience, we have become a leading supplier of electrical components to various industries across Germany and Europe. Our unique product portfolio consists of bimetal and capillary thermostats, NTC thermistors, self-resetting PPTC thermistor switches, thermal cut-offs, as well as DC solenoids. Together with our partners we develop, produce and sell our, oftentimes customer specific, products. We supply our products predominantly to customers within the automotive-, battery systems-, heating- and home appliances- as well as machinery-industries and many more.

Since our foundation in 1969 we act as a sole-representative and singular contact of our partners within the German-speaking and European markets. We produce and supply customer-specific products in very close collaboration with our partners. Today we are the sole-representative of the following manufacturers:

• C.A.E.M. s.r.l.
• Elmwood (The Hosho Corporation)
• HW Co. Ltd.
• PEPI – Portage Electric Products Inc.
• Sea & Land Corp. (AlphaTop)
• Sen Tech Co. Ltd.
• Sunvic Controls Ltd.
• White Rodgers (Division of Emerson Climate Technologies)


THERMONIE Elektrotechnische Komponenten GmbH is a company of great tradition located in Hamburg and is firmly established within the German and European landscape of suppliers of electrical components. Our company is family-run in the second generation. Together with our customers and partners we develop unique and customized solutions to the industries’ challenges of today.

THERMONIE Horst Niemandt Im- und Export GmbH was founded in 1969 by Horst Niemandt in Hamburg Niendorf. Back then the company focused on the import and export of electrical components and soon established the cornerstone of today’s business by acquiring the rights for sole-representation of American manufacturers such as PEPI Portage Electric Products Inc. or White Rodgers, division of Emerson Climate Technologies. Due to our company’s growth we had to move operations to our current headquarter in western Hamburg in 1993.

In 2004 a change of generations was concluded by Lars Niemandt taking control of the company and renaming it to THERMONIE Elektrotechnische Komponenten GmbH. Since then THERMONIE has also become sole-representative to a variety of Asian partners, while successfully developing our relationships with our Italian and US partners even further.

  We are certified in accordance to ISO:2015.

Production Sites

NTC Temperature Sensor CP Series

Our  NTC temperature sensors CP series are available now also for temperatures of up  to +150°C and sensor head diameters in a range from 2,0 to 5,0 mm. All are classified IP68/69. More information: CP Series   January 2024