What Sefelec SAS does

Sefelec SAS is a French designer and manufacturer of electrical safety testing and measurement equipment, founded in 1965 and headquartered in Lognes, Île-de-France. The company specializes in dielectric rigidity testing, insulation measurement, continuity and safety testing (DBT), automatic wiring verification, and milliohmmetry, organized around three core product families: the SEFELEC high-voltage dielectric testers (56-H, 506-D), the low-voltage safety testers (32-C, 56-S), and the SYNOR 5000 series automatic wiring testers (5000-C, 5000-P), supported by accessories such as the CA 02 security cage and the RCP2A milliohmmeter. In 2025 the company launched the SEFELEC 5X, a refreshed product range spanning dielectric strength, insulation, and automatic wiring test.

The business operates as a B2B enterprise hardware vendor, selling directly to engineering and procurement teams in regulated industries. Its customers include marquee French and European manufacturers in aerospace and defense (Airbus Helicopters, ArianeGroup, Naval Group, Thales, Safran, Rolls-Royce), railway (SNCF, RATP, Alstom), and automotive (BMW). Go-to-market is direct enterprise sales with technical support for product integration, complemented by presence at industrial trade shows such as Eurosatory 2024 and Paris Air Show 2025. The company is privately held with no disclosed parent, no funding rounds, and no public ownership signals.

Sefelec reports cumulative metrics of 707,400 test points installed, 21,722 projects completed, and 10,980 clients served over the past ten years, underscoring a long-tenured installed base across safety-critical industrial applications. With 22 employees, the company operates as a small, specialist manufacturer competing in a niche where qualification, regulatory compliance, and incumbency with major European OEMs form the basis of its market position.

Name

Sefelec SAS

Legal name

Sefelec SAS

Website

https://sefelec.fr

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

11–50 employees

Short description

Sefelec SAS is a French manufacturer, founded in 1965, of electrical safety testing equipment — dielectric rigidity testers, insulation measurement instruments, and automatic wiring analyzers — sold directly to enterprise customers in aerospace, defense, railway, and automotive industries.

Ownership category

akta.pro rank

Product category

Electrical Safety Testing Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Electrical Equipment Manufacturing (3353)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Testing, Certification & Inspection Tools (Copper/Fiber) (HDAFALAK)

Keywords

• Dielectric testing equipment
• Electrical safety testers
• Automatic wiring testers
• Insulation measurement instruments
• Milliohmmeters

Headquarters

HQ city

Not specified

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Sales - Test Equipment: Sale of electrical safety testing equipment including dielectricimeters, continuity testers, wiring testers, and milliohmmeters. Products are designed for industrial applications in aerospace, railway, defense, and automotive sectors. Revenue is generated through direct equipment sales with potential for after-sales support and service contracts.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Sefelec SAS designs, manufactures, and sells electrical safety testing equipment used to verify dielectric strength, insulation integrity, continuity, and wiring harness integrity in industrial environments. The portfolio includes high-voltage dielectric testers, low-voltage safety testers, automatic wiring testers, milliohmmeters, and operator safety cages, sold primarily to aerospace, railway, defense, automotive, and industrial manufacturers for safety compliance and quality control.

Product overview

Sefelec SAS offers a comprehensive portfolio of electrical safety testing equipment and measurement instruments. The product lineup centers on three core solution families: (1) dielectric strength testers (rigidité diélectrique) including the SEFELEC 56-H high voltage models and SEFELEC 506-D dielectric testers; (2) low voltage safety testers (Testeurs DBT) such as the SEFELEC 32-C and SEFELEC 56-S for continuity and safety testing; and (3) automatic wiring testers under the SYNOR 5000 series (SYNOR 5000-C and SYNOR 5000-P). Supporting these core instruments are accessories including the CA 02 security cage and the RCP2A milliohmmeter. The newly launched SEFELEC 5X series represents the next generation of this product portfolio. All products are designed for industrial applications in aerospace, rail, defense, and automotive sectors, with a focus on operator safety and equipment reliability.

Differentiator

Problem solved

Functional benefit

Products and services

• SEFELEC 32-C Continuity tester (Testeur DBT) for verifying electrical continuity and mass connections in electrical safety testing applications.
• SEFELEC 56-S Low-voltage electrical safety tester (Testeur DBT) for dielectric strength and electrical safety testing.
• SEFELEC 56-H High-voltage dielectric tester (Diélectrimètre haute tension) for high-voltage insulation and dielectric strength testing.
• SEFELEC 506-D Dielectric tester (Diélectrimètre) for measuring dielectric properties and insulation resistance.
• SYNOR 5000-C Automatic wiring tester for automated verification and testing of electrical wiring configurations.
• SYNOR 5000-P Automatic wiring tester for automated verification and testing of electrical wiring configurations.
• CA 02 Security cage for safe high-voltage testing operations, providing operator protection during dielectric strength tests.
• RCP2A Milliohmmeter for precise low-resistance measurements in electrical components and connections.
• SEFELEC 5X New-generation product range encompassing dielectric strength testers, insulation measuring instruments, and automatic wiring testers.

Quantifiable outcome

• 707,400 test points installed over 10 years
• +2 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles3 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 moves4 records

Expansion highlights3 records

Direct peers

• Megger Group: UK-based global manufacturer of electrical test equipment including insulation testers, low-resistance ohmmeters/milliohmmeters, and wiring testers. Direct competitor to Sefelec across dielectric, milliohmmetry, and wiring test product lines in aerospace, rail, and industrial markets.
• Fluke Corporation: US-headquartered global leader in electrical test and measurement instruments (multimeters, insulation testers, installation testers). While broader in scope, Fluke directly overlaps with Sefelec in electrical safety testing for industrial and aerospace applications.
• Chroma ATE Inc. Taiwan-based manufacturer of automatic wiring testers, hipot/safety testers, and electrical test solutions. Direct competitor to Sefelec's SYNOR 5000 wiring testers and SEFELEC dielectric testers, particularly in automotive and EV manufacturing.
• Kikusui Electronics: Japanese manufacturer specializing in withstanding voltage (hipot/dielectric) testers, insulation resistance testers, and automatic wiring testers (modeling the latter comparable to Sefelec's SYNOR 5000 series). Direct competitor in safety testing equipment.
• Hioki E.E. Corporation: Japanese manufacturer of electrical test and measurement instruments including insulation resistance testers, milliohmmeters, and automated wire harness testers. Direct competitor in the same product categories as Sefelec, particularly in wiring harness and dielectric testing.
• GOSSEN METRAWATT (GMC-I): German manufacturer of measurement and testing technology including insulation testers, low-resistance meters, and electrical safety test equipment. Direct competitor serving similar industrial, rail, and manufacturing customers in the DACH region.
• Chauvin Arnoux: French manufacturer of electrical test and measurement instruments (multimeters, clamp meters, insulation testers, dielectric testers). Directly competes with Sefelec in electrical safety testing across French industrial, rail, and aerospace customers.

Broad incumbents

• Ametek Inc. US-listed diversified manufacturer with a test and calibration instruments segment that includes electrical safety testers and precision measurement instruments. Broader incumbent that competes with Sefelec at the high end of electrical safety testing in industrial and aerospace markets.
• Keysight Technologies: US-listed broad-based electronic measurement company whose test equipment portfolio includes hipot/safety testers and electrical compliance solutions. While primarily focused on electronic test, Keysight overlaps with Sefelec in electrical safety compliance testing for aerospace and industrial customers.

Emerging players

• Vitrek Corporation: US-based manufacturer specializing in high-voltage test and measurement equipment including hipot testers and electrical safety analyzers. Smaller, specialized competitor with partial overlap in dielectric and safety testing niches.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sefelec-sas

Revenue estimate

Valuation estimate

Number of profiles

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 Sefelec SAS