What Lumberg does

Lumberg is a privately held, third-generation German family-owned manufacturer of connectors and contact systems, founded in 1934 and headquartered in Schalksmühle, Sauerland. The company designs, engineers, and produces electromechanical and mechatronic components — notably RAST connector systems in pitches 1.5, 2.5, and 5.0 mm, M16 circular connectors compliant with IEC 61076-2-106, high-current contact elements rated up to 56A and tested to LV215, and datacom solutions including IPx7-rated RJ45 panel feedthroughs. It also sells SmartSKEDD tool-free connectors, Micromodul/Minimodul/Multimodul families, press-fit technology, and Smplcty overmolded connectors, alongside VARICON 7000 automated harnessing equipment. Manufacturing is carried out in Schalksmühle, Cloppenburg (Germany), Świdnica (Poland), and Dongguan (China), with sales offices in Shanghai, Singapore, and the United States, and the company holds ISO 9001, IATF 16949, ISO 14001, and ISO 50001 certifications across multiple sites.

The company operates a B2B sales-led model, selling direct through global offices and reaching customers via trade shows (Motek, Electronica, Dritev, ISH, PCIM, Automation Expo, NEIC). It serves four primary business units: Automotive (connectors and modules used in 800 car models across 100 brands, from ICE to EV), Building Technology (RAST connectors for HVAC, heat pumps, fuel cells, and solar thermal), Home Appliance (RAST connectors for white goods), and Mobile Radio Networks/AISG (connectors for antenna infrastructure, RET, and TMA). Revenue is generated through hardware sales of standard catalog products and customized connector solutions, with pricing handled on a quote basis; revenue figures are not publicly disclosed. Lumberg is structured as Lumberg Holding GmbH & Co. KG with wholly-owned operating subsidiaries in Germany, Singapore, China, and the United States, and remains under founding-family control with no external venture or private equity backing.

Name

Lumberg

Legal name

Lumberg Holding GmbH & Co. KG

Website

https://lumberg.com

Company type

Private

Founded year

1934

Operating status

Operating

Headcount range

251–500 employees

Short description

Lumberg is a third-generation German family-owned manufacturer of connectors and contact systems serving automotive, building technology, home appliances, and mobile radio networks, with global manufacturing in Germany, Poland, and China and direct sales across Europe, Asia, and North America.

Ownership category

akta.pro rank

Product category

Industrial Connectors

NAICS

Electronic Connector Manufacturing (334417)

SIC

Electronic Connectors (3678)

akta.pro primary industry

Connectors & Interconnect Components (Industrial connectors, terminals, sockets, backplane) (IMAGAJAC)

akta.pro secondary industry

Connectors, Jacks & Couplers (RJ45/LC/SC/MPO/MTP) (HDAFALAD)

Keywords

• Industrial connectors
• RAST connector systems
• PCB connectors
• High-current contacts
• Circular connectors

Headquarters

HQ city

Schalksmühle

HQ country

Germany

HQ region

Europe

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Connector and Contact System Sales: Lumberg generates revenue through the design, engineering, and manufacture of connectors and contact systems. Products include RAST connector systems, circular connectors, high-current contact elements, datacom connectors, and harnessing equipment. The company serves automotive, building technology, home appliance, and mobile radio networks industries with both standard products and customized solutions.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Lumberg designs, engineers, and manufactures connectors and contact systems, electromechanical elements, and mechatronic components for industrial applications. The product range centers on RAST Connector Systems (pitches 1.5, 2.5, 5.0 mm), High-Current Contact Elements (up to 56A), Circular Connectors (M16 SV/KV series), and Datacom Connectors (RJ45, AISG), plus Harnessing Equipment. The company develops, industrializes, and produces both standard catalog offerings and customized connector solutions for four vertical business units: Automotive, Building Technology, Home Appliance, and Mobile Radio Networks/AISG.

Product overview

Lumberg is a German family-owned company (third generation, 93+ years) specializing in connectors and connection technology. The product portfolio centers on RAST Connector Systems (available in 1.5, 2.5, and 5.0 mm pitches) as the core offering, complemented by High-Current Contact Elements (up to 56A), Circular Connectors (M16 series with screw, bayonet, and crimp locking), and Datacom Connectors (including IPx7-rated RJ45 solutions). The company serves four main business units: Automotive (800+ car models), Building Technology (heat pumps, solar), Home Appliances, and Mobile Radio Networks/AISG. Additional products include SmartSKEDD connectors, Micromodul/Minimodul/Multimodul families, Press-fit Technology, Smplcty overmolded connectors, and VARICON 7000 automated assembly machines. The portfolio emphasizes modularity, vibration resistance, and automation-ready packaging for industrial applications.

Differentiator

Problem solved

Functional benefit

Products and services

• RAST Connector Systems Modular RAST connector systems offered in pitches 1.5, 2.5, and 5.0 mm for automotive, building technology, and home appliance applications, including the RAST 1.5 which saves 43% in size vs RAST 2.5.
• High-Current Contact Elements Compact high-current contacts with flexible mating directions (top, bottom, or side) enabling vibration-resistant connection of multilayer PCBs and busbars, with models rated up to 56A.
• Circular Connectors (M16 SV and KV Series) M16 circular connectors with screw-locking, bayonet locking, or crimp technology, available in SV (straight plugs) and KV (straight sockets) versions with nickel-plated brass housings for industrial applications.
• Datacom Connectors Network connectors including RJ45 modular connectors, IPx7 modular wall feedthroughs for industrial environments, and AISG connectors for mobile radio network applications covering data, audio, and DC supply.
• Harnessing Equipment Wire harnessing equipment including insulation displacement technology (IDT) tools and VARICON 7000 fully automatic assembly machines for automated connector production.
• Automotive Business Unit Solutions Connector products and sub-assemblies for automotive applications serving both conventional and electric vehicle manufacturers with modules for various electronic systems.
• Building Technology Business Unit Solutions RAST-pitch connector solutions for building technology applications including heat pumps, fuel cells, solar thermal systems, and modern heating systems.
• Home Appliance Business Unit Solutions Specialist RAST connector range in pitch sizes 1.5, 2.5, and 5.0 marketed as 'first choice' for major home appliance manufacturers.
• Mobile Radio Networks/AISG Business Unit Solutions Connectivity solutions for mobile radio networks including AISG (Antenna Interface Standards Group) connectors, network and tower connectors, and RET/TMA products.
• Custom Development, Industrialization and Production Services Service portfolio covering Development, Industrialization, and Production support for customers requiring customized connector and contact system solutions for specific technical applications.

Quantifiable outcome

• 800 car models from 100 brands rely on Lumberg connectors - demonstrating automotive industry trust and market penetration

Named customers1 record

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators4 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Amphenol: Global diversified interconnect specialist with substantial automotive, industrial and datacom connector businesses. Competes head-to-head with Lumberg in M16-style circular connectors, PCB connectors, RJ45/dadacom and high-current products across similar end customers.
• Molex: Major global connector manufacturer (Koch subsidiary) with extensive automotive, datacom and industrial connector portfolios including RJ45, high-current, and circular solutions. Competes with Lumberg across nearly all four of Lumberg's business units, including RAST-equivalent PCB connectors and M16-equivalent circulars.
• TE Connectivity: One of the world's largest connector manufacturers serving automotive, industrial, communications and data center markets with a broad portfolio of RAST-equivalent and high-current products. Directly competes with Lumberg in automotive and industrial connector sockets, particularly in EV power and signal interconnects.

Direct peers

• ERNI Electronics: European (originally German, now part of TE Connectivity) connector specialist with strong industrial and automotive board-to-board and wire-to-board connector lines. Directly comparable mid-sized European connector competitor focused on industrial and automotive sockets.
• HARTING: German family-owned connector specialist focused on industrial, automotive and datacom applications with strong circular connector and PCB connector lines. Closely comparable to Lumberg in heritage, German mid-size positioning, automotive/industrial customer mix and connector-only specialization.
• Würth Elektronik: German family-owned electronic component manufacturer offering PCB terminals, connectors and electromechanical components to industrial and automotive customers. Overlaps directly with Lumberg's PCB connector and RAST products for industrial customers.
• JST (Japan Solderless Terminals): Japan-based connector specialist with strong presence in PCB connectors and automotive wire-to-board systems including RAST-class products. Directly comparable in product type and target applications, particularly automotive wire-to-board connections where Lumberg's RAST family competes.
• Franz Binder GmbH & Co. (Binder): German family-owned circular connector specialist (M5 to M23 series) serving automation, medical and industrial markets. Highly comparable in terms of German mid-sized family-owned positioning and specialized circular connector product focus overlapping with Lumberg's M16 portfolio.
• Weidmüller: German family-owned industrial connection technology company with PCB terminals, heavy-duty connectors and electronics for industrial automation. Comparable German mid-sized family competitor with overlapping industrial customer base and connector specialization for building/industrial applications.
• Phoenix Contact: German family-owned industrial connection technology specialist with deep presence in PCB terminals, connectors, and industrial automation. Highly comparable German mid-market competitor focused on industrial and building technology connector sockets similar to Lumberg's RAST and PCB portfolio.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

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Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries4 records

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 Lumberg