ktc GmbH

What ktc GmbH does

ktc GmbH is a privately held German manufacturer of electrical transformers and provider of CNC-based contract manufacturing and assembly services, headquartered in Straubenhardt, Baden-Württemberg. The company builds single-phase, three-phase, control, ignition, and power-supply (Trafonetzteil) transformers, many carrying UL certification for the North American market, alongside a patented welding process for three-phase transformer production. Production is anchored at the Straubenhardt-Feldrennach headquarters on Daimlerstraße, with a second production location in Schorndorf operated by group-entity Staudenmaier Konstruktionen GmbH; the wider ktc Group (including sister companies ktc-Handhabungstechnik and Rist Transformatorenbau) employs roughly 100 people and ships more than 80,000 transformers per year. Vertical integration runs from in-house CNC machining (12 machining centers), sheet metal processing, welding (TIG and MAG), and surface treatment through to final assembly of gas-control devices and welded subassemblies.

The business serves B2B industrial customers across machinery and automation, medical technology (IEC 60601-1), railway signaling for Deutsche Bahn (DIN EN 50125), industrial robotics, and burner/heating OEMs such as Honeywell. Revenue is generated through quote-based sales of custom-configured transformers (configured via an online product configurator on a seven-language website) and through professional-services revenue from CNC contract manufacturing (lot sizes 1 to 5,000) and contract assembly (lot sizes 50 to 500). Pricing is not publicly disclosed; deals are spec-driven, multi-year contractual in nature, and quality is backed by DIN EN ISO 9001:2015 across all production sites, VDE/EN 61558 transformer safety, and multiple UL file registrations. The company is owner-managed by the Schiek family since 1996, with founder Wolfgang Schiek's son, Maximilian Schiek (B.Eng.), joining management in 2018 to lead the succession phase.

Name

ktc GmbH

Legal name

ktc GmbH

Website

https://ktc-gmbh.com

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

11–50 employees

Short description

ktc GmbH is a family-owned German manufacturer of custom transformers (single-phase, three-phase, control, ignition, and power-supply units) and a CNC contract manufacturing and assembly provider, serving industrial machinery, medical, railway, robotics, and heating OEMs from Straubenhardt.

Ownership category

akta.pro rank

Product category

Industrial Transformer Manufacturing

NAICS

Power, Distribution, and Specialty Transformer Manufacturing (335311)

SIC

Power, Distribution & Specialty Transformers (3612)

akta.pro primary industry

Transformers (Power, Distribution, Instrument, Specialty) (IMAGAAAA)

akta.pro secondary industry

AC-DC Power Supplies (Industrial PSUs, DIN-rail, enclosed/open-frame) (IMAGADAA)

Keywords

• Industrial transformers
• Control transformers
• Ignition transformers
• CNC contract manufacturing
• Transformer power supplies

Headquarters

HQ city

Straubenhardt

HQ country

Germany

HQ region

Europe

Offices2 records

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. Transformer sales: Sale of single-phase transformers, three-phase transformers, control transformers, transformer power supplies (single and three-phase), ignition transformers, and custom transformer solutions. Products include UL-approved models and standard catalog products.
2. Contract manufacturing (CNC): CNC machining services including milling, turning, welding, surface treatment, sheet metal processing, and laser cutting. Production designed for lot sizes from 1 to 5,000 units. ISO 9001:2015 certified.
3. Contract assembly: Assembly services including assembly work, gas control systems, welded assemblies, and quality testing. Services include testing according to customer specifications and safety-related areas such as gas control devices.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels3 records

Core offering

ktc GmbH manufactures and sells industrial transformers (single-phase, three-phase, control, ignition, and UL-certified models) used for voltage conversion, electrical isolation, ignition of oil and gas burners, and stable power supply in control circuits. The company also provides CNC contract manufacturing services (milling, turning, welding, surface treatment, sheet metal processing) and contract assembly services for batch sizes from 1 to 5,000 units, all produced in-house at its Straubenhardt facility in Germany.

Product overview

ktc GmbH is a modern production company for transformers and CNC technology based in Baden-Württemberg, Germany. The company operates as a manufacturer of transformers and provides contract manufacturing and assembly services. The transformer product portfolio includes single-phase transformers, three-phase transformers, control transformers, transformer power supplies, and ignition transformers, with many models carrying UL certification for the North American market. The company leverages over 70 years of transformer expertise and delivers more than 80,000 transformers annually. In addition to transformers, ktc GmbH offers CNC contract manufacturing services (mechanical processing, milling, turning, welding, surface treatment) and contract assembly services. The company also provides an online product configurator for custom transformer specifications. All products are manufactured in Germany with quality management according to DIN EN ISO 9001:2015.

Differentiator

Problem solved

Functional benefit

Brands

• ktc Handhabungstechnik: Handling technology company acquired by the Schiek family, specializing in magazines and transport devices for machine manufacturers.
• Rist Transformatorenbau

Products and services

• Single-phase Transformers Single-phase transformers for voltage conversion in technical devices, available as standard catalog products or custom-built solutions with optional UL certification for the North American market.
• Three-phase Transformers Three-phase transformers for industrial voltage conversion, available in horizontal or vertical configurations and produced using a patented welding process. Delivered as safety and control transformers.
• Control Transformers Control transformers for industrial control circuits, providing stable supply voltage for relays, contactors, and PLC modules in machine and equipment applications.
• Transformer Power Supplies (Trafonetzteile) Single-phase and three-phase transformer power supplies that convert AC to DC, including FGSE, ESKE, DSK, and DSKE series, offered as standard units or custom solutions.
• Ignition Transformers (Zündtransformatoren) High-voltage ignition transformers (TZI and TGI series, 5 to 7.5 kV) for oil and gas burners, comparable to Honeywell TZI and TGI models, used for high-voltage ignition in combustion systems.
• UL-Certified Transformers UL-certified transformers for the North American market, including FTUL, DTU/DTUL, and DTB/DTBL series with various power ratings. Listed under UL Files E102068, E493155, and E193331.
• Contract Manufacturing (CNC) - Lohnfertigung CNC machining services including milling, turning, welding (TIG/MAG), surface treatment, sheet metal processing, and laser cutting for batch sizes from 1 to 5,000 units. Operates 12 machining centers (10 milling machines, 2 lathes). ISO 9001:2015 certified.
• Contract Assembly - Lohnmontage Contract assembly services including assembly work, gas control systems, welded assemblies, and quality testing to customer specifications, typically for batch sizes from 50 to 500 pieces.

Quantifiable outcome

• Delivery of more than 80,000 transformers per year
• +2 more outcomes

Named customers5 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core.

• ktc-HandhabungstechnikcoreOthersSister company within the ktc Group, acquired by Wolfgang Schiek. Specializes in handling technology for machine tools, producing several thousand storage and transport devices for over 150 machine manufacturers since 1973. Provides planning, design, construction, production, assembly, commissioning, and service for tool and workpiece changing systems.
• Rist TransformatorenbaucoreOthersSister company within the ktc Group, operating in the transformer building sector.
• Staudenmaier Konstruktionen GmbHcoreOthersCompany acquired in Schorndorf to expand competencies and production capacities in construction. Part of the ktc Group.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• ABB Ltd: Global electrification and automation major with a broad transformer portfolio spanning distribution, dry-type and specialty units. Competes with ktc on system-level specifications and via channel partners in industrial automation.
• Eaton Corporation: Global power-management company with industrial control and dry-type transformer offerings competing in the same machinery, automation and infrastructure end markets as ktc, but at significantly larger scale and broader portfolio.
• Schneider Electric: Global energy-management and automation company offering transformers (including via its Lexium/Phaseo lines) as part of integrated power and control architectures. Competes with ktc where customers prefer single-vendor system supply.
• Siemens AG: Global industrial conglomerate whose Smart Infrastructure division offers transformers as part of integrated power distribution and automation solutions. Competes with ktc on larger OEM framework deals where bundling and global footprint matter.

Direct peers

• Talema Group: International manufacturer of transformers, inductors and current sensors serving industrial, medical and renewable customers. Comparable on custom transformer manufacturing scale and on serving regulated verticals (medical/industrial) similar to ktc's footprint.
• Hammond Manufacturing: North American manufacturer of transformers and magnetics, including UL-listed control and isolation transformers. Directly comparable product set, especially relevant for ktc's UL-certified North American export ambitions.
• Block Transformatoren-Elektronik GmbH: German manufacturer of transformers, power supplies and inductors with a comparable custom/low-voltage transformer portfolio and similar Mittelstand scale. Closest direct competitor in product mix (control, safety, isolation transformers) and customer base across European machinery and automation OEMs.
• Acme Electric: U.S.-based manufacturer of dry-type distribution, control and encapsulated transformers sold through industrial channels. Overlaps with ktc's product portfolio on low-voltage control and distribution transformers, particularly in industrial machinery applications.
• EREA nv/sa: Belgian manufacturer of low-voltage transformers, chokes, and power supplies with a comparable custom-engineering orientation. Competes with ktc in European industrial OEM accounts and offers a similar mix of control, isolation and safety transformers.
• HTT Transformatoren GmbH: Germany-based transformer specialist producing control, safety and isolating transformers for industrial applications. Overlaps directly with ktc's control and safety transformer lines and serves the same industrial OEM customer profile in German-speaking markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ktc-gmbh

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 ktc GmbH