Control cabinet heaters, cooling units, cable assembly and module assembly – Made in Germany.
Lm-therm Elektrotechnik AG
94501 Aldersbach (Headquarters, Production)New on Amplifa
About Lm-therm
Lm-therm Elektrotechnik AG is an owner-managed company based in Aldersbach in Lower Bavaria that has been active in industrial climate control for over 60 years. Its core products are control cabinet heaters (resistive heating elements and PTC heating elements, including versions with integrated thermostat, fan and Ex-rated versions), compressor and Peltier cooling units, filter fans, thermostats, hygrostats, dehumidifiers and LED control cabinet lights. In addition, as a contract manufacturer the company produces custom cable assemblies with conductor cross-sections from 0.14 mm² to 195 mm² – from single pieces to large-scale series – and offers industry-independent module assembly (mechanical, electrical, electromechanical) as well as small distribution board wiring as an extended workbench. Production takes place entirely at the parent plant in Aldersbach; the machine fleet includes, among others, the Komax Kappa 340 and Schleuniger E300. Customers are found in mechanical engineering, plant engineering, electrical engineering, medical technology, laboratory and analytics technology as well as aerospace. The company has been certified to ISO 9001 since 2001 and supplies Europe and Asia via sales partners.
- Site
- Aldersbach
- Processes
- Module assembly (mechanical, electrical, electromechanical), Cable assembly (stranded wires, cables, cable sets; semi-/fully automatic, manual, hybrid), Manufacture of control cabinet heaters (resistive heating elements, PTC heating elements, PTC, Manufacture of control cabinet cooling units (compressor indoor/outdoor) and Peltier cooling units, Manufacture of filter fans, roof fans, exhaust filters, control cabinet interior fans, Manufacture of thermostats, hygrostats, controllers (incl. Ex versions), Manufacture of control cabinet dehumidifiers, Manufacture of LED control cabinet lights (400 lm to 700 lm, with/without motion detector)
- Materials
- Aluminium profile (anodized, housing of control cabinet heater P-70), Copper stranded wire/cables (cable technology, 0.14 mm²-195 mm²), Silicone (protective cover of industrial keyboard FK-20B4110), Aluminium (anodized), Copper (stranded wire/cables), Silicone (plastic)
- Certificates
- ISO 9001:2015, Approval for production of Ex heaters (explosion-hazardous areas), AEO certificate, North American standards (approval of listed components), Canadian standards (product certification), Approval for Ex heaters, North American standards, Canadian standards
- Founded
- 1960
- Industries
- Mechanical engineering, Plant engineering, Electrical engineering, Medical technology, Laboratory and analytics technology, Aerospace technology
- 01
Consulting & concept development
- 02
Prototyping
- 03
Production (cable assembly, device manufacturing, assembly)
- 04
Quality assurance & testing
- 05
Logistics & shipping (serial number marking, labelling)
Materials & Processes
Aluminium (anodized)
Anodized aluminium profiles for housings of control cabinet heaters, e.g. the P-70 series.
Copper (stranded wire/cables)
Conductor material for cable assembly with cross-sections from 0.14 mm² to 195 mm².
Silicone (plastic)
Protective covers of waterproof industrial keyboards such as the FK-20B4110 (IP67).
Locations
Aldersbach
DEHeadquarters, production (parent plant): control cabinet climate control, cable assembly, module assembly
- Lot size
- Lot size 1 to large-scale series
- Materials
- Copper, aluminium, plastic
- Komax Kappa 340
- Schleuniger E300
- Metzner fully automatic cable machine
- Cable assembly production machines
- Compressor cooling unit production line
Components & Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Module assembly (mechanical, electrical, electromechanical)Assembly | – | – | – | 1 piece – Series production | – |
| Cable assembly (stranded wires, cables, cable sets; semi-/fully automatic, manual, hybrid)Assembly | – | – | – | Single pieces – Large-scale series | Copper (conductor) |
| Manufacture of control cabinet heaters (resistive heating elements, PTC heating elements, PTCAssembly | – | – | – | Lot size 1 – Series production | Aluminium (housing profile, anodized) |
| Manufacture of control cabinet cooling units (compressor indoor/outdoor) and Peltier cooling unitsAssembly | – | – | – | – | – |
| Manufacture of filter fans, roof fans, exhaust filters, control cabinet interior fansAssembly | – | – | – | – | – |
| Manufacture of thermostats, hygrostats, controllers (incl. Ex versions)Assembly | – | – | – | – | – |
| Manufacture of control cabinet dehumidifiersAssembly | – | – | – | – | – |
| Manufacture of LED control cabinet lights (400 lm to 700 lm, with/without motion detector)Assembly | – | – | – | – | – |
| Custom control cabinet climate control / special designs (custom mounting, cables,Engineering | – | – | – | Lot size 1 – Series production | – |
| Industrial keyboards, waterproof industrial keyboards, monitors, computer miceAssembly | – | – | – | – | Silicone (protective cover) |
| Cable assembly, conductor cross-sections 0.14 mm² - 195 mm²Assembly | – | – | – | – | Copper |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Cable assembly production machines | – | – | Conductor cross-sections 0.14 mm² - 195 mm² | – | Aldersbach |
| Compressor cooling unit production line | – | – | – | – | Aldersbach |
Additional services
Quality & Certifications
Lm-therm Elektrotechnik AG has been certified to DIN EN ISO 9001 since 2001 (currently ISO 9001:2015) and produces exclusively in Aldersbach. Testing services include visual and dimensional inspection to drawing, functional tests of electrical units, measurements according to VDE guidelines as well as documented test reports.
| Evidence | Aldersbach |
|---|---|
| ISO 9001:2015 | |
| AEO certificate | |
| Approval for Ex heaters | |
| North American standards | |
| Canadian standards |
History
- 1960
Founded; over 60 years of experience in industrial climate control
- 1998
Start of cable technology and module assembly (over 27 years of experience)
- 2001
First certified to ISO 9001, certification regularly renewed since then
- 2026
Jürgen Gerauer appointed to the management board; renewed certification to ISO 9001:2015; coverage in Schaltschrankbau magazine (04/2026); successful participation at SPS 2025