Sefelec

What Sefelec does

Sefelec is a French industrial company (SEFELEC SAS) founded in 1965 and headquartered in Lognes, France, that designs and manufactures electrical safety testing and cable testing equipment. The product portfolio spans two main categories: (1) electrical safety testers — including the SEFELEC 5X Series hipot testers and dielectric testers (SEFELEC 56-H, 56-D, 506-H, 506-D, 56-S, 506-S), the SEFELEC 1500M megohmmeter, and the RCP2A milliohmmeter — built on an ARM Dual-Core processor combined with DSP architecture for measurement stability and repeatability; and (2) automatic cable and harness testers in the SYNOR 5000 series (C, D, and P variants) supporting up to 2,048 test points across 16 switching cards and covering continuity, insulation, dielectric strength, functional, and component tests. The product line is complemented by the DT Range of high-power test stations (3 kV to 200 kV AC/DC, up to 200 kVA), an external SEFELEC 64-SC scanner, an internal 4/8-channel scanner option, the CA 02 safety enclosure, and two software platforms — Winpass MX and Winpass 5000 — which natively integrate third-party instruments from Keysight, Keithley, Wayne-Kerr, Sefram, TDK-Lambda, KIKUSUI, and Adlink.

Sefelec sells to enterprise customers in five primary verticals: Aerospace (Rolls-Royce, Airbus Helicopters, Safran, ArianeGroup), Defense (Thales, Naval Group, MBDA, Dassault Aviation, SAAB, KNDS, DGA), Railway (RATP, SNCF, Alstom, CRRC, Hitachi Rail, Wabtec, CAF France, Korail), Automotive (BMW, Volkswagen, Hella, Leoni, Bosch, Schaeffler, Continental), and Industrials (Siemens, Exxelia, Actemium, Clemessy). The go-to-market is direct enterprise sales supported by field technical assistance, custom engineering, metrology/calibration services (annual, with COFRAC-accredited ISO 17025 options), and after-sales maintenance with on-site intervention. Quote-based pricing is not publicly disclosed.

The company reports 10,980 customers, 21,722 completed projects, and 707,400 test points deployed over the past 10 years, with the defense sector representing the largest installed base (198,072 test points, 6,082 projects, 3,074 customers) followed by railway (106,110 test points, 3,258 projects, 1,647 customers), industrials (56,592 / 1,738 / 878), and automotive (42,444 / 1,303 / 659). Headcount sits in the 11–50 band. Although the company's own materials describe it as an independent French manufacturer, public-facing contact channels use the eaton.com domain and the T&Cs page carries Eaton branding, suggesting a corporate affiliation with Eaton Corporation. No funding rounds, M&A events, leadership changes, regulatory actions, or restructuring events are disclosed.

Name

Sefelec

Legal name

SEFELEC

Website

https://sefelec.com

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

11–50 employees

Short description

Sefelec (SEFELEC SAS) is a French industrial company founded in 1965 that designs and manufactures electrical safety testers, dielectric testers, and SYNOR 5000 automatic cable/harness testers for enterprise customers in aerospace, defense, railway, automotive, and industrial sectors. The portfolio includes the SEFELEC 5X Series, DT Range high-power stations, and Winpass software with third-party instrument integration.

Ownership category

akta.pro rank

Product category

Electrical Test Equipment

NAICS

Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515), Testing Laboratories and Services (54138)

SIC

Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823), Services-Testing Laboratories (8734)

akta.pro primary industry

Test & Measurement Equipment (Oscilloscopes, DAQ, signal analyzers, calibration benches) (IMAGAFAC)

akta.pro secondary industries

Testing, Certification & Inspection Tools (Copper/Fiber) (HDAFALAK), High-Voltage (HV) Safety, Isolation Testing & Compliance Services (TLAKAMAH)

Keywords

• Hipot testing equipment
• Dielectric strength testing
• Insulation measurement instruments
• Automatic cable testing
• Electrical safety testing

Headquarters

HQ city

Lognes

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 Equipment Sales: Sale of electrical testing equipment including hipot testers, dielectric testers, cable testers, scanners, and accessories. Products range from benchtop instruments to high-power test stations up to 200 kVA.
2. Metrology and Calibration Services: Calibration and verification services for SEFELEC and SYNOR equipment. Includes standard manufacturer verification, compliance adjustment, and documentation per NF X07-011 standard. COFRAC services available per ISO 17025 through accredited partners.
3. After-Sales Service and Maintenance: Technical assistance, preventive and corrective maintenance, repairs, equipment returns (RMA), on-site interventions, and upgrades. Available both in workshop and on-site.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Sefelec designs and manufactures electrical test and insulation measurement equipment, including hipot testers, dielectric testers, megohmmeters, milliohmmeters, automatic cable testers (SYNOR 5000 series), and high-power dielectric test stations (DT Range up to 200 kV/200 kVA). The portfolio is complemented by external/internal scanners, safety enclosures, and Winpass MX/Winpass 5000 software for test configuration, execution, and traceability, sold to industrial OEMs and operators for production quality control and incoming inspection.

Product overview

Sefelec is a provider of electrical test and insulation measurement equipment with over 60 years of experience. The product portfolio is organized around two main categories: electrical safety testers (including hipot testers, dielectricimeters, LVD testers, megohmmeters, and milliohmmeters) and automatic cable testers (SYNOR 5000 series). The SEFELEC 5X series represents the new-generation platform combining ARM Dual-Core processor with DSP technology for enhanced stability and measurement repeatability. Testers can be expanded with scanner options (external SEFELEC 64-SC or internal scanner) and integrated with Winpass MX/Winpass 5000 software for centralized test management, control, and traceability. The DT range provides high-power testing solutions (up to 200 kV and 200 kVA) for demanding industrial applications. Safety enclosures and accessories complement the testing ecosystem for operator protection.

Differentiator

Problem solved

Functional benefit

Brands

• SYNOR 5000 Series: Automatic cable testers offered in multiple configurations (C, D, P) for various testing requirements including continuity, insulation, dielectric strength, and component testing.
• SEFELEC 5X Series
• Winpass MX
• Winpass 5000

Products and services

• SEFELEC 64-SC External Scanner External scanner for high-voltage and high-current testing, designed to extend the test capabilities of SEFELEC 5X series testers by automating switching of test points.
• SEFELEC 56-S LVD Tester LVD (low-voltage directive) tester for low-voltage safety testing, part of the new-generation SEFELEC 5X series with enhanced accuracy and fast execution.
• SEFELEC 506-S LVD Tester LVD (low-voltage directive) tester for low-voltage safety testing, designed for production quality control and incoming inspection.
• SEFELEC 56-H Hipot Dielectrimeter Hipot dielectrimeter for high-voltage dielectric strength testing with maximum AC test voltage of 5 kV 500 VA and DC test voltage of 6 kV.
• SEFELEC 506-H Hipot Tester Single-function hipot tester for high-voltage tests, built on ARM Dual-Core processor with DSP architecture ensuring optimal stability and measurement repeatability. Maximum AC test voltage 5 kV 500 VA, maximum DC test voltage 6 kV, current range 0-100 mA, with optional API.
• SEFELEC 56-D Dielectrimeter Dual-function dielectric tester combining dielectric strength tests and insulation measurements with 5 kVAC and 6kVDC test voltage capability, Ethernet/RS232/USB/API communications.
• SEFELEC 506-D Dielectrimeter Dielectrimeter for dielectric strength testing and insulation measurements in industrial quality control applications.
• SEFELEC 1500M Megohmmeter Megohmmeter for high-resistance insulation measurement applications in aerospace, railway, defense, and automotive industries.
• SYNOR 5000-C Automatic Cable Tester Automatic cable tester for continuity, insulation, dielectric strength, functional, and component testing of cables and harnesses.
• SYNOR 5000-P Automatic Cable Tester Automatic cable tester designed for production line cable testing with high test point capacity.
• SYNOR 5000-D Automatic Cable Tester Robust automatic cable tester for field or embedded applications with custom configurations and expandable enclosures, supporting continuity, insulation, dielectric strength, functional testing, and component testing (diodes, ZENER diodes, resistors, capacitors).
• DT Range High-Power Hipot Testers High-power dielectric strength and hipot test stations delivering from 3 kV to 200 kV AC/DC with high power ratings from 500 VA to 200 kVA, built on a robust, scalable, and durable architecture for demanding environments.
• RCP2A Milliohmmeter Milliohmmeter for low-resistance measurements in electrical safety testing applications.
• CA 02 Safety Enclosure Safety enclosure for protecting operators during high-voltage electrical safety testing.
• Winpass MX Software Software for measurement devices that simplifies test configuration, controls test execution, and centralizes results for complete traceability, supporting SEFELEC 5X Series, 64-SC Scanner, and third-party instruments with multi-protocol control (RS232, IEEE488, Ethernet) and multilingual support.
• Winpass 5000 Software Software suite for automatic cable testers SYNOR 5000, providing project-based management, multi-protocol control, and test result reporting.
• Metrology and Calibration Services Calibration and verification services for SEFELEC and SYNOR equipment, including standard manufacturer verification, compliance adjustment, and documentation per NF X07-011 standard, with COFRAC services available per ISO 17025 through accredited partners. Annual calibration recommended with frequency adjustable based on usage.
• After-Sales Service and Maintenance Technical assistance, preventive and corrective maintenance, repairs, equipment returns (RMA), on-site interventions, and upgrades for SEFELEC and SYNOR equipment, available both in workshop and on-site.

Quantifiable outcome

• 707,400 test points deployed over past 10 years across all sectors
• +2 more outcomes

Named customers31 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

Feature6 records

Scale indicators16 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Kikusui Electronics: Kikusui is a Japanese manufacturer of AC/DC hipot testers, dielectric withstand testers, and electronic loads — directly competing with Sefelec's hipot/dielectric product lines, including products explicitly named in Sefelec's Winpass MX integration list.
• Chroma ATE: Chroma ATE manufactures electrical safety testers, hipot testers, and automated test systems for similar industries (EV, rail, aerospace, defense). Its product portfolio closely mirrors Sefelec's SEFELEC 5X and SYNOR 5000 lines.
• Megger Group: Megger is a UK-based specialist in insulation testing, megohmmeters, and low-resistance measurement — directly overlapping Sefelec's SEFELEC 1500M megohmmeter and RCP2A milliohmmeter offerings for utility, rail, and industrial customers.
• Hioki E.E. Corporation: Hioki manufactures insulation testers, hipot testers, and electrical measurement instruments serving automotive, rail, and industrial customers — a closely comparable product range to Sefelec's electrical safety portfolio.
• Fluke Corporation: Fluke is a major manufacturer of portable electrical test instruments including insulation testers and hipot/dielectric testers, targeting the same industrial, rail, and aerospace maintenance workflows as Sefelec.

Broad incumbents

• Keysight Technologies: Keysight is a large incumbent in electronic test and measurement. Although broader in scope, Keysight supplies power analyzers and bench instruments integrated with Sefelec's Winpass MX — representing both partnership and competitive threat in industrial test cells.
• Keithley Instruments (Tektronix): Keithley, a Tektronix brand, manufactures SourceMeters and precision electrical instrumentation that overlap Sefelec's high-precision insulation and dielectric testing territory, particularly in laboratory and R&D environments.
• AMETEK Programmable Power: AMETEK's programmable power division supplies high-power AC/DC test sources used in safety and dielectric testing at industrial scale — comparable to Sefelec's DT Range high-power hipot test stations (up to 200 kVA).

Emerging players

• GW Instek: GW Instek offers affordable safety testers, hipot testers, and megohmmeters targeting cost-sensitive industrial and educational customers — an emerging alternative to Sefelec's premium-positioned products in less regulated segments.
• ITECH Electronic: ITECH manufactures AC/DC power sources and electronic loads increasingly used in EV, renewable, and electrical safety testing — a partial-overlap peer addressing adjacent use cases that compete with Sefelec's DT Range in high-power applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/sefelec-s.a.

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