Sergi Transformer Protector
SERGI is a privately held French engineering firm that designs and deploys mechanical pressure-relief protection systems for power transformers in nuclear, utility, oil & gas, data center, transport and industrial facilities, operating as a 70-year-old independent enterprise serving critical infrastructure operators worldwide.
- Company typePrivate
- Founded1952
- HeadquartersTaverny, France
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What Sergi Transformer Protector does
Sergi Transformer Protector (SERGI) is a privately held French engineering company founded in 1952 and headquartered in Taverny, France, with 51–100 employees. SERGI designs and deploys mechanical last-line protection systems for power transformers, based on rapid pressure-relief principles that intervene within milliseconds — before electrical relays or fire suppression systems can respond. The technology addresses the physical failure mechanisms that drive catastrophic transformer escalation, preventing explosion pressure, fragment propagation, oil release and secondary ignition in critical assets.
The product portfolio comprises a core Transformer Protection system, complemented by Fire & Consequence Mitigation and Resilience Accessories modules, and three engineering service lines: Simulation & Multiphysics Engineering, Retrofit & Modernization, and Proof & Standards. Solutions are engineered case-by-case to specific transformer designs, manufacturers, voltage levels and site conditions, and are deployed across six target verticals: nuclear, power & utilities, oil & gas, data centers & digital infrastructure, transport & critical facilities, and industrial & manufacturing. SERGI claims one of the most extensive empirical feedback bases in transformer explosion prevention worldwide, built from field deployments across transmission, generation, offshore platforms and dense urban environments.
SERGI operates a consultative, enterprise field-sales motion through "Talk to an Engineering Expert" engagements, with quote-based project pricing and a multilingual digital presence in English, French, Spanish, Portuguese and Russian. The company is independently owned with no disclosed venture capital, private equity or public market involvement, and no recent funding rounds, acquisitions or leadership transitions are documented in the available data.
Sergi Transformer Protector firmographics
Firmographics- Name
- Sergi Transformer Protector
- Legal name
- Sergi Transformer Protector
- Website
- https://sergi-tp.com
- Company type
- Private
- Founded year
- 1952
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- SERGI is a privately held French engineering firm that designs and deploys mechanical pressure-relief protection systems for power transformers in nuclear, utility, oil & gas, data center, transport and industrial facilities, operating as a 70-year-old independent enterprise serving critical infrastructure operators worldwide.
- Ownership category
- akta.pro rank
Sergi Transformer Protector industry classification
Industry- Product category
- Transformer Protection Systems
- NAICS
- Relay and Industrial Control Manufacturing (335314)
- SIC
- Electrical Industrial Apparatus (3620)
- akta.pro primary industry
- Process Safety & Relief Systems (Flare Systems, PRVs, Explosion Protection) (IMAHAEAL)
- akta.pro secondary industries
- Protection, Control & Monitoring (Relays, RTUs, Fault Recorders, Condition Monitoring) (IMAGAAAD), Special Hazard Fire Suppression Systems (Clean Agent/Foam/CO2/Kitchen Hood) (IMAIAJAE), Emissions Controls & Environmental Retrofit Services (SCR/FGD/ESP, CEMS) (EUAEALAL)
Keywords
Where Sergi Transformer Protector is headquartered
LocationHeadquarters
- HQ city
- Taverny
- HQ country
- France
- HQ region
- Europe
Markets served
Sergi Transformer Protector business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain
Revenue model
- Transformer Protection Systems: Sale and deployment of mechanical explosion prevention systems for power transformers. Solutions are engineered case-by-case based on transformer designs, manufacturers, voltage levels, and operating conditions.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
Sergi Transformer Protector product offering
Product offeringCore offering
Sergi Transformer Protector (SERGI) designs, manufactures and deploys mechanical last-line protection systems for power transformers. Its core technology uses rapid pressure-relief principles to intervene within milliseconds—before electrical relays, breakers or fire suppression systems can respond—preventing transformer explosions, fragment propagation, oil release and secondary fires. Solutions are engineered case-by-case based on transformer design, voltage level, manufacturer and site-specific operating conditions, supported by simulation, retrofit and standards-compliance engineering services.
Product overview
Sergi Transformer Protector is a unified mechanical protection solution for power transformers, offering explosion and fire prevention technology that operates within milliseconds as a last-line physical barrier. The product portfolio consists of the core Transformer Protection system (mechanical pressure-relief technology), complemented by Fire & Consequence Mitigation and Resilience Accessories modules. Engineering services including Simulation & Multiphysics Engineering, Retrofit & Modernization, and Proof & Standards support the implementation and validation of the protection solutions across diverse transformer types and operating conditions.
Differentiator
Problem solved
Functional benefit
Quantifiable outcome
- Intervention within milliseconds—faster than electrical relays or fire suppression systems
- +2 more outcomes
Companies that use Sergi Transformer Protector
Customer profileSegments6 records
Ideal customer profiles6 records
Sergi Transformer Protector technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
Sergi Transformer Protector partnerships and signals
Strategic signalScale indicators3 records
Recent moves5 records
Expansion highlights4 records
Sergi Transformer Protector competitors and assessment
Company assessmentBroad incumbents
- ABB: Global electrification and automation major offering transformers, switchgear, and protection & control products for substations, utilities, and industrial customers. Overlaps with SERGI in transformer-adjacent protection but as part of a much broader portfolio.
- GE Vernova: Power and grid equipment spinoff from GE covering transformers, switchgear, and grid solutions. Direct overlap with SERGI's transformer-focused protection offering, but at much larger scale and across the full T&D value chain.
- Schneider Electric: Global industrial electrical equipment and protection provider serving utilities, data centers, and industrial facilities. Its substation protection and switchgear products overlap with SERGI's transformer protection positioning at a portfolio level.
- Hitachi Energy: Major manufacturer of transformers, high-voltage equipment, and protection systems for utility and industrial customers. The most direct overlap with SERGI in substation transformer protection, but as part of an integrated T&D portfolio.
- Eaton: Diversified power management company offering switchgear, relays, and protection devices for utility and industrial applications. Overlaps with SERGI on the electrical protection and reliability side across data center and industrial end markets.
- Kidde (Carrier): Major industrial and special-hazard fire suppression and detection provider serving utilities, data centers, oil & gas, and industrial customers. Competes with SERGI's Fire & Consequence Mitigation product line at a portfolio level.
- Siemens Energy: Energy equipment and services major with a significant transformer, grid technology, and protection-relay portfolio. Competes with SERGI in the same critical-infrastructure customer set across power generation, T&D, and industrial markets.
Direct peers
- BS&B Safety Systems: Global manufacturer of rupture discs, explosion doors, and pressure-relief devices for industrial safety. Comparable in core mechanical pressure-relief engineering to SERGI's transformer protection technology.
- Fike Corporation: Specialist in explosion protection, rupture discs, and pressure-relief devices for industrial process equipment. Closest analogue to SERGI's mechanical pressure-relief concept, applied to a different set of industrial assets.
- IEP Technologies (HOERBIGER): Explosion protection and pressure-relief specialist serving dust-handling, chemical, and industrial process industries. Applies the same mechanical pressure-relief philosophy as SERGI, though in non-electrical process safety contexts.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
Sergi Transformer Protector social profiles
Digital presenceSergi Transformer Protector financial estimates
Financial estimateRevenue estimate
Valuation estimate
Sergi Transformer Protector leadership team
Management profileNumber of profiles
Sergi Transformer Protector funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Sergi Transformer Protector M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Sergi Transformer Protector
What does Sergi Transformer Protector do?
Sergi Transformer Protector (SERGI) designs, manufactures and deploys mechanical last-line protection systems for power transformers. Its core technology uses rapid pressure-relief principles to intervene within milliseconds—before electrical relays, breakers or fire suppression systems can respond—preventing transformer explosions, fragment propagation, oil release and secondary fires. Solutions are engineered case-by-case based on transformer design, voltage level, manufacturer and site-specific operating conditions, supported by simulation, retrofit and standards-compliance engineering services.
Is Sergi Transformer Protector a public or private company?
Sergi Transformer Protector is a private company. It is classified as unknown and is currently operating.
When was Sergi Transformer Protector founded?
Sergi Transformer Protector was founded in 1952. It employs 51 to 100 people.
Where is Sergi Transformer Protector based?
Sergi Transformer Protector is headquartered in Taverny, France, in the Europe region.
How does Sergi Transformer Protector make money?
One revenue line is on record: transformer Protection Systems.
Who are Sergi Transformer Protector's main competitors?
Broad incumbents on record are ABB, GE Vernova, Schneider Electric, Hitachi Energy, Eaton, Kidde (Carrier) and Siemens Energy. Direct peers are BS&B Safety Systems, Fike Corporation and IEP Technologies (HOERBIGER).
Does Sergi Transformer Protector have an API?
No public API is recorded for Sergi Transformer Protector.
What industry is Sergi Transformer Protector in?
Sergi Transformer Protector's product category is Transformer Protection Systems. Its primary akta.pro industry code is IMAHAEAL, Process Safety & Relief Systems (Flare Systems, PRVs, Explosion Protection), with a secondary code of IMAGAAAD, Protection, Control & Monitoring (Relays, RTUs, Fault Recorders, Condition Monitoring). Its NAICS code is 335314 and its SIC code is 3620.