What Gustav Klein does

Gustav Klein GmbH & Co. KG is a privately held, family-owned German-Austrian manufacturer of industrial power electronics, operating continuously for approximately 75 years (founded circa 1948/1950). The company is headquartered in Schongau, Germany, with a second manufacturing site in Inzing (Tyrol), Austria, and a sales office in Vienna, organized as a Kommanditgesellschaft (limited partnership) with a separate general partner entity. Its product portfolio spans three integrated lines: (1) test and simulation systems — bidirectional DC and AC source/sink units used by R&D and quality assurance teams to test and simulate batteries, fuel cells, and electric drivetrains; (2) secure industrial power supply — industrial UPS systems, frequency converters, rectifiers, static inverters, DC converters, and specialized BSV systems for hospitals; and (3) stationary railway and local-transport power supply, including purpose-built rectifiers for rail and public transit infrastructure. Underlying technology is precision analog/digital power conversion rather than software or AI; differentiation rests on 75 years of accumulated know-how, dual-country European manufacturing, and full lifecycle service support (maintenance contracts, system replacement, 24h hotline, dedicated customer portal).\n\nGustav Klein sells exclusively business-to-business via direct, quote-based field sales through its factory offices and the Vienna sales contact, with no public list pricing, resellers, or distributors identified. Revenue mechanics combine one-off hardware sales of custom-engineered systems with recurring aftermarket service revenue tied to long-lifecycle industrial and railway installations. The customer base is concentrated in three primary verticals — e-mobility and battery testing, industrial manufacturing, and railway/public transport — though no named enterprise accounts are disclosed. Marketing activity is limited to a corporate website, LinkedIn and YouTube presence, a Rapidmail newsletter, and selective trade-show sponsorship (e.g., ERU Conference, Brno, 2023). The company also runs structured apprenticeship programs in both Schongau and Inzing, with 13 consecutive years of apprentices achieving top IHK exam results, evidencing a deliberate internal talent pipeline.\n\nGovernance is concentrated under President Martin Dlauhy; the company is independent with no disclosed parent, external investors, M&A activity, or public listing. Financials are not publicly disclosed and there are no funding rounds, awards, or patent filings in the source material, making external benchmarking of revenue and growth reliant on headcount and segment proxies.

Name

Gustav Klein

Legal name

Gustav Klein GmbH & Co. KG

Website

https://gustav-klein.com

Company type

Private

Founded year

1950

Operating status

Operating

Headcount range

251–500 employees

Short description

Gustav Klein is a 75-year-old family-owned German-Austrian manufacturer of industrial power electronics, producing bidirectional DC/AC test systems, industrial UPS, and railway power supplies for e-mobility, industrial, and transit customers across DACH and worldwide.

Ownership category

akta.pro rank

Product category

Industrial Power Electronics

NAICS

Switchgear and Switchboard Apparatus Manufacturing (335313)

SIC

Electrical Industrial Apparatus (3620), Electronic & Other Electrical Equipment (No Computer Equip) (3600), Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Switchgear & Switchboard Apparatus (3613)

akta.pro primary industry

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

akta.pro secondary industries

Backup Power & Critical Power Systems (Generators/UPS) (IMAIABAJ), Industrial Control Cabinets & Power Distribution (Panels, Switchgear for Automation) (IMAHAHAK), Grid Interconnection, Power Quality & Electrical Infrastructure Service (Transformers, Switchgear) (TLAKAMAM)

Keywords

• Industrial power electronics
• Battery testing systems
• Railway power supplies
• Bidirectional power supplies
• Uninterruptible power systems

Headquarters

HQ city

Schongau

HQ country

Germany

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Power Electronics Hardware Sales: Sale of power electronics systems including DC/AC sources and sinks, industrial UPS systems, frequency converters, rectifiers, inverters, and DC converters for industrial, railway, and e-mobility testing applications.
2. Service and Maintenance: Comprehensive service offerings including maintenance contracts, system replacement, material exchange, and 24-hour hotline support throughout the product lifecycle.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Gustav Klein designs, manufactures, and services industrial power electronics and power supply systems across three core lines: (1) bidirectional test and simulation systems (DC and AC source/sink units) for batteries, fuel cells, and e-drive components; (2) secure industrial power supply systems including UPS, frequency converters, rectifiers, inverters, DC converters, and BSV hospital systems; and (3) stationary railway and local-transit power supply equipment. Production runs from factories in Schongau, Germany and Inzing, Austria, with full lifecycle service and a 24-hour hotline.

Product overview

Gustav Klein is a German-Austrian company with 75 years of experience providing reliable power electronics and power supply solutions. The product portfolio is organized into three main categories: (1) Test & Simulation Systems including DC Source/Sink and AC Source/Sink for testing batteries, fuel cells, and drive components; (2) Secure Industrial Power Supply covering UPS systems, frequency converters, rectifiers, inverters, DC converters, and hospital BSV systems; and (3) Stationary Railway Power Supply including rectifiers for railway and local transport. All products are manufactured in Germany and Austria, with operations in Schongau (Germany) and Inzing (Austria).

Differentiator

Problem solved

Functional benefit

Products and services

• DC Source/Sink (DC-Quelle/Senke) Bidirectional DC power supply units used to test and simulate batteries, battery systems, fuel cells, and other DC components. Sold to manufacturers, R&D labs, and quality assurance teams in the e-mobility and energy storage sectors.
• AC Source/Sink (AC-Quelle/Senke) AC power sources and sinks used for testing and simulation of electrical systems and components. Targeted at industrial and e-mobility test laboratories.
• Industrial UPS Systems (Industrie USV-Anlagen) Uninterruptible power supply systems providing secure, continuous power to electrical consumers in industrial environments and railway applications. Sold to industrial facility operators and railway operators.
• Frequency Converter (Frequenzwandler) Devices for converting electrical frequency to meet specific industrial and railway requirements.
• Rectifiers (Gleichrichter) AC to DC power conversion equipment for industrial facilities.
• Static Inverters (Statische Wechselrichter) Static inverters converting DC to AC power for industrial and railway applications.
• DC Converters (DC-Wandler) DC-to-DC voltage converters for power supply applications in industrial and railway settings.
• BSV Systems for Hospitals (BSV-Anlagen für Krankenhäuser) Secure, redundant power supply systems specifically designed for hospital and healthcare facility requirements.
• Rectifiers for Railway and Local Transport (Gleichrichter für Bahn und Nahverkehr) Specialized rectifiers engineered for stationary power supply in railway systems and local public transport infrastructure.
• Lifecycle Service and Maintenance Tailored maintenance contracts, system replacement programs, material exchange for wear parts, and 24-hour hotline support delivered to industrial and railway customers throughout the equipment lifecycle.

Quantifiable outcome

• 13 consecutive years with apprentices passing exams with top honors (Einser Azubis)

Named customers2 records

Segments3 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

Two partnerships are on record, tiered minor.

• LinkedInminorGTM or Marketing PartnerCompany maintains a LinkedIn company page for professional networking and company communications. Used as a marketing and employer branding channel.
• YouTubeminorGTM or Marketing PartnerCompany maintains a YouTube channel for video content about products and company information.

Scale indicators2 records

Recent moves4 records

Expansion highlights4 records

Broad incumbents

• ABB: Global power and automation leader with substantial presence in power electronics, traction power, and industrial UPS – broader incumbent whose portfolio competes with Gustav Klein across multiple end markets.
• AMETEK Programmable Power: Global leader in programmable power supplies and electronic loads (brands Elgar, California Instruments, Sorensen) – broader incumbent with overlapping test & simulation capability but a much wider product portfolio.
• Chroma ATE: Taiwan-based global supplier of test and measurement instrumentation, including bidirectional DC power supplies and regenerative loads for battery and EV testing – broader incumbent competing in e-mobility test.
• TDK-Lambda: Global industrial power supply manufacturer offering programmable, AC-DC, DC-DC, and UPS products – broader incumbent with overlapping product categories but a much wider geographic and portfolio footprint.
• Siemens (Smart Infrastructure / Mobility): Diversified global industrial and rail-electrification giant whose rail power supply, traction substations, and industrial power products overlap with Gustav Klein's railway and industrial UPS offerings at larger scale.

Direct peers

• Regatron: Swiss-headquartered specialist in programmable and bidirectional DC power supplies for e-mobility, battery, and fuel cell testing – competes with Gustav Klein in the same high-performance precision power-supply niche.
• AEG Power Solutions: Industrial UPS, power conversion, and railway power supply specialist – directly competes with Gustav Klein in industrial UPS, hospital BSV systems, and rail rectifier segments across Europe and globally.
• EA Elektro-Automatik: German specialist manufacturer of bidirectional DC power supplies, electronic loads, and battery test systems – a direct head-to-head competitor to Gustav Klein's DC Source/Sink product line in e-mobility and battery testing.
• Höcherl & Hackl: German manufacturer of programmable DC power supplies, electronic loads, and test systems – comparable product portfolio and German Mittelstand heritage, targeting industrial and laboratory test customers.
• Heinzinger electronic: Bavarian-based manufacturer of high-voltage and high-precision power supplies, DC sources/sinks, and converters – directly comparable German Mittelstand peer with overlapping industrial and laboratory customer bases.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/c/GustavKleinGmbHCoKG/videos?app=desktop&cbrd=1
• LinkedInlinkedin.com/company/gustav-klein

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 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 Gustav Klein