Fanox Electronic
Fanox Electronic is a Spanish manufacturer specializing in self-powered medium and low voltage protection relays for utilities, renewable energy operators, and industrial customers, operating as a subsidiary of Wabtec Corporation since 1992.
- Company typePrivate
- Founded1992
- HeadquartersDerio, Spain
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Fanox Electronic does
Fanox Electronic, SL is a Spanish manufacturer specializing in self-powered protection relays and control solutions for low and medium voltage electrical systems. Founded in 1992 and headquartered in the Bizkaia Technology Park in Derio, Spain, the company operates as a wholly owned subsidiary of Wabtec Corporation. Fanox has spent more than 30 years focused exclusively on protection and control, building a portfolio that spans medium voltage protection relays (SIA, SIL, SIR, SIU series), low voltage protection products, communication gateways and RTUs, and supporting configuration software. Its core technical differentiator is self-powered relay architecture that harvests operating energy from current transformers, eliminating dependence on batteries or external auxiliary supplies and reducing lifecycle cost for utility and renewable operators. Thousands of self-powered devices have been installed and operated in the field for over 20 years, and the product family carries KEMA type certifications plus IEC 60044-1 compliance for current transformers.
The company's customer base is anchored in electric utilities and renewable energy operators (wind and photovoltaic), with secondary exposure to industrial segments including water/wastewater treatment, oil and gas, and general manufacturing. Revenue is generated primarily through hardware sales of protection relays and complementary accessories such as current transformers, strikers, and trip coil modules, with smaller contributions from configuration software licensing (SICom, RNXtudio, LGGE, FNX61850). Distribution operates through direct enterprise field sales, the Wabtec parent channel (including Mors Smitt and RMS lines), and an exclusive Spain partnership with Kalkitech Group for Smart Grid communication infrastructure. Fanox is ISO 9001:2008 certified, is a participant in the United Nations Global Compact, and holds UL certification on selected models for North American market access.
Fanox Electronic firmographics
Firmographics- Name
- Fanox Electronic
- Legal name
- FANOX ELECTRONIC, SL
- Website
- https://fanox.com
- Company type
- Private
- Founded year
- 1992
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Fanox Electronic is a Spanish manufacturer specializing in self-powered medium and low voltage protection relays for utilities, renewable energy operators, and industrial customers, operating as a subsidiary of Wabtec Corporation since 1992.
- Ownership category
- akta.pro rank
Fanox Electronic industry classification
Industry- Product category
- Electrical Protection Relays
- NAICS
- Relay and Industrial Control Manufacturing (335314)
- SIC
- Switchgear & Switchboard Apparatus (3613)
- akta.pro primary industry
- Protection Relays & Protection IEDs (EUADACAE)
- akta.pro secondary industries
- Protection, Fault Location & Adaptive Relaying for Reliability (EUADAHAG), Protection Coordination, Anti-Islanding & Relay Settings for DER (EUADALAG), Protection, Relaying & Substation Automation Upgrades (IEC 61850) (EUAEALAC)
Keywords
Where Fanox Electronic is headquartered
LocationHeadquarters
- HQ city
- Derio
- HQ country
- Spain
- HQ region
- Europe
Offices1 record
Markets served
Fanox Electronic business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Technology or R&D, Personnel, Operations, Marketing or Sales, Infrastructure
Revenue model
- Protection Relay Hardware Sales: Fanox generates revenue primarily from the sale of protection relays including Medium Voltage (SIA-B, SIA-C, SIA-F, SIL-A, SIL-G, SIL-C, SIL-S, SIU-C, SIR-A, SIR-C) and Low Voltage (GL, C, GEN) product lines. Relays are sold as complete units with various I/O configurations and communication options.
- Accessories and Components: Revenue from sale of complementary products including Current Transformers (CTs), Strikers (PRT), Trip Coil Modules (TCM), Auxiliary Battery Power Supplies (KITCOM), and other accessories required for relay installation and operation.
- Communication and Control Equipment: Sales of RNX-2000 Remote Terminal Units (RTU) and SIC-A Protocol Gateways for Smart Grid communication infrastructure.
- Software Licenses: SICom configuration and communication software, RNXtudio for RTU programming, FNX61850 for IEC 61850 configuration, and other software tools for relay setup and monitoring.
- Low Voltage Protection Products: Motor protection relays, pump protection systems, earth leakage relays, phase control relays, voltage relays, timers, and surge protection devices for industrial applications.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | No public pricing tiers available |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels4 records
Fanox Electronic product offering
Product offeringCore offering
Fanox Electronic designs and manufactures self-powered and dual-powered protection relays for medium and low voltage electrical systems. Its portfolio includes overcurrent, earth fault, directional feeder, generator, recloser, voltage/frequency, motor, and pump protection relays, plus RNX-2000 RTUs, SIC-A protocol gateways, current transformers, strikers, and configuration software. The flagship self-powered relays harvest operating energy from current transformers, eliminating the need for batteries or auxiliary power supplies.
Product overview
Fanox Electronic is a manufacturer specializing in self-powered protection relays and power system protection solutions since 1992, certified ISO 9001:2008. The product portfolio is organized around three core categories: Medium Voltage Protection Relays (SIA-B, SIA-C, SIA-F, SIL-A, SIL-G, SIL-C, SIL-S, SIU-C, SIR-A, SIR-C), Communication & Control Solutions (RNX-2000 RTU, SIC-A redundancy gateway), and Low Voltage Protection & Control Relays. The SIA-B and SIA-C series offer self-powered and dual-powered overcurrent protection, while the SIL series provides advanced feeder and generator protection with directional capabilities. The SIR series integrates recloser control with feeder protection. Accessories include current transformers, strikers, coils, and trip coil modules. Software tools (SICom, RNXtudio, LGGE, FNX61850) enable configuration, communication, and IEC 61850 management. The company also distributes Kalkitech protocol converters and data concentration solutions in Spain.
Differentiator
Problem solved
Functional benefit
Products and services
- SIA-B Standard CTs Protection Relay Dual and self-powered overcurrent protection relay with three /1 CTs (<2VA) for medium-voltage distribution, with auxiliary supply options (24-230 V AC/DC, USB) and optional internal battery for commissioning. Stores 1024 events and up to 10 COMTRADE oscillographic records.
- SIA-B Specific CTs Protection Relay Self-powered overcurrent protection relay using specific CTs with start-up from 0.4xIn in 3-phase mode; magnetic trip flag holds position without power, with up to 100 events, 4 fault records, and internal RTC. KEMA certified.
- SIA-C Self & Dual Powered Protection Relay Dual/self-powered overcurrent and earth fault protection relay via standard CTs (/5 or /1) with very low start-up levels (0.075xIn 3-phase, 0.16xIn 1-phase). Supports up to 7 outputs and 10 inputs with optional Ethernet communication. KEMA certified.
- SIA-F Protection Relay Overcurrent and earth fault protection relay with auxiliary power (24-230 V AC/DC) for secondary distribution. Features Zone Selection Interlocking (ZSI-68), Modbus RTU or DNP3.0 communication, and stores up to 200 events with 1 COMTRADE oscillographic record.
- SIL-A Advanced Feeder Protection Relay Advanced feeder protection relay with directional neutral protection, designed for renewables (wind/PV) and compact MV switchgear. Features 4 current channels, optional voltage channel, SOTF function, and comprehensive communication options (IEC61850, IEC60870-5-104, Modbus TCP/IP, DNP3.0 TCP/IP). KEMA certified.
- SIL-G Feeder and Generator Protection Relay Feeder and generator protection relay with 4 current inputs and 5 voltage inputs measuring up to 1,000 V direct LV connection. Includes loss of main (islanding) protection via voltage, frequency, and ROCOF methods. Optional Wi-Fi and IRIG-B synchronization. KEMA certified.
- SIL-C Line, Feeder and Generator Protection Relay Compact directional feeder and generator protection relay with comprehensive current, voltage, and frequency protection. Measures up to 1,000 V direct on LV lines with 4 current and 5 voltage channels. Supports optional Wi-Fi communication. KEMA certified.
- SIL-S LPIT Feeder Protection Relay Feeder protection relay using LPIT (Low Power Instrument Transformer) technology with 3 combined current/voltage channels for LPCT, Rogowski, and capacitive/resistive sensors. Supports decoupling, load shedding, and islanding protection. KEMA certified.
- SIU-C Voltage and Frequency Protection Relay Voltage and frequency protection relay for transformers and electrical machines in HV, MV, and LV systems. Features 5 voltage channels measuring up to 1,000 V direct on LV lines with comprehensive loss of main protection.
- SIR-A Recloser Control and Feeder Protection Relay Recloser control and feeder protection relay with Arc Flash Detection (4 AFD inputs + 4 high-speed outputs). Controls circuit breaker (52) and recloser (79) functions with comprehensive current, voltage, and frequency protection. KEMA certified.
- SIR-C Overhead Control and Feeder Protection Relay Overhead control and feeder protection relay with compact size for primary and secondary distribution. Features 4 current and 6 voltage channels for LEA sensors with auxiliary power 24-230 Vdc/ac.
- RNX-2000 Remote Terminal Unit (RTU) Flexible and compact Remote Terminal Unit (RTU) for Ring Main Unit monitoring and control. Features 9 current channels for LPCT/Rogowski sensors, 3 voltage channels for resistive/capacitive sensors, and comprehensive protocol support including IEC61850, IEC60870-5-104, Modbus, and DNP3.
- SIC-A Redundancy Protocol Gateway (PRP/HSR) Redundancy protocols gateway supporting PRP/HSR (High-availability Seamless Redundancy) for substation automation. Provides any-to-any protocol conversion with up to 3000 data points for common protocols or 800 data points for IEC 61850.
- Current Transformers (CTs) Comprehensive range of current transformers including protection, measurement, and self-powered types for medium and low voltage applications. Includes CT-MTP for MV protection, CT80II/CT4II for LV remote management, and toroidal transformers for earth leakage protection. Complies with IEC 60044-1.
- Strikers and Trip Coil Modules Tripping accessories including PRT striker (single effect solenoid), TCM Trip Coil Module for self-powered relays, and KITCOM auxiliary battery power supply adapter for commissioning.
- SICom Configuration and Communication Software Communication software for SIA, SIL, SIU, and SIR protection relays. Enables access to relay information, settings modification, and event saving via graphic user interface. Compatible with Windows 2000/XP, Windows 7, and Windows 10.
- RNXtudio RTU Programming Software Communication software for RNX-2000 Remote Control Unit (RTU). Enables configuration, monitoring, and management of RTU devices.
- LGGE Logic Gate Graphic Editor Logic Gate Graphic Editor for protection relay programming and automation configuration.
- FNX61850 IEC 61850 Configuration Software IEC 61850 configuration and management software for substation automation.
- Low Voltage Protection and Control Relays Comprehensive range of low voltage protection relays including motor protection (C, GL, GL200, G EEx), generator protection (GEN), pump protection (PF-R, P, PS-R), earth leakage relays (D30/DM30, DR30, ELR-A/T, ELR-B/3C), and control relays (S, ST/ST-D, T2/TST24, MT2, U1D, U3-S/N, MTR).
Quantifiable outcome
- No batteries or maintenance required for self-powered models, reducing operating costs of the facility considerably
- +3 more outcomes
Companies that use Fanox Electronic
Customer profileNamed customers5 records
Segments4 records
Ideal customer profiles3 records
Fanox Electronic technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability4 records
Feature9 records
Fanox Electronic partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Kalkitech GroupregionalFanox is the exclusive distributor in Spain for Kalkitech Group's energy and utilities products. Kalkitech products include protocol converters, data concentrators, automation and control solutions, DLMS software, and control room software that complement Fanox's protection relay offerings for Smart Grid applications.
Scale indicators5 records
Recent moves6 records
Expansion highlights6 records
Fanox Electronic competitors and assessment
Company assessmentBroad incumbents
- Siemens Smart Infrastructure: Siemens' SIPROTEC protection relay family is a market-leading MV/LV protection line with IEC 61850 support and broad utility/industry coverage, making it one of the closest functional competitors to Fanox's SIA/SIL/SIR series.
- Eaton: Eaton's protective relays (e.g., Power Xpert C445, EMR-3000) and electrical balance-of-system offerings overlap with Fanox's low-voltage motor and pump protection products in industrial applications.
- Schneider Electric: Schneider Electric's EcoStruxure protection relay range (Sepam, Easergy P3/P5, Vamp) directly competes with Fanox in MV feeder, transformer, and generator protection for utilities and renewables, while also offering broader energy management.
- GE Vernova (Grid Solutions): GE Vernova's Multilin and UR-series protection relays are widely deployed in utilities and renewables. The firm is a major direct competitor in MV feeder and generator protection, including for wind and solar applications overlapping Fanox's renewable segment.
- ABB: ABB is a global electrification leader offering a comprehensive portfolio of medium-voltage protection relays (REF615, REX640, etc.) and substation automation. It is the broadest incumbent competing with Fanox across utility, renewable, and industrial protection markets.
Direct peers
- Schweitzer Engineering Laboratories (SEL): SEL specializes in protection relays, automation, and communications for utilities and industrial customers. Its SEL-451, SEL-487B, and SEL-751 products compete head-to-head with Fanox's feeder, transformer, and generator protection offerings.
- Beckwith Electric: Beckwith Electric is a niche US specialist in transformer, feeder, and generator protection relays, including recloser controls. It is a direct comparable to Fanox in scale and specialization within MV protection for utilities.
- Mors Smitt (Wabtec): Mors Smitt is a Wabtec sister company offering relays and power utility products, co-marketed with Fanox on the Fanox website. It is the most direct Wabtec-internal peer, sharing the parent and overlapping with Fanox in traction and utility protection.
- Arteche: Arteche is a Spanish-based manufacturer of protection relays, instrument transformers, and substation automation for utilities and renewables. It is a direct peer to Fanox in geography, product mix, and customer base.
Emerging players
- Woodward (Industrial Controls): Woodward offers generator and grid-tie protection products (e.g., easYgen, LS-5) that overlap with Fanox's SIL-G generator and islanding protection capabilities, particularly in distributed generation and renewable interconnection.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Fanox Electronic social profiles
Digital presenceFanox Electronic compliance and trust
Trust signalCompliance8 records
Fanox Electronic financial estimates
Financial estimateRevenue estimate
Valuation estimate
Fanox Electronic leadership team
Management profileNumber of profiles
Fanox Electronic funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Fanox Electronic 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 Fanox Electronic
What does Fanox Electronic do?
Fanox Electronic designs and manufactures self-powered and dual-powered protection relays for medium and low voltage electrical systems. Its portfolio includes overcurrent, earth fault, directional feeder, generator, recloser, voltage/frequency, motor, and pump protection relays, plus RNX-2000 RTUs, SIC-A protocol gateways, current transformers, strikers, and configuration software. The flagship self-powered relays harvest operating energy from current transformers, eliminating the need for batteries or auxiliary power supplies.
Is Fanox Electronic a public or private company?
Fanox Electronic is a private company. It is classified as corporate owned and is currently operating.
When was Fanox Electronic founded?
Fanox Electronic was founded in 1992. It employs 11 to 50 people.
Where is Fanox Electronic based?
Fanox Electronic is headquartered in Derio, Spain, in the Europe region.
How does Fanox Electronic make money?
Five revenue lines are on record. Protection Relay Hardware Sales are the primary driver. The others are accessories and Components, communication and Control Equipment, software Licenses and low Voltage Protection Products.
Who are Fanox Electronic's main competitors?
Broad incumbents on record are Siemens Smart Infrastructure, Eaton, Schneider Electric, GE Vernova (Grid Solutions) and ABB. Direct peers are Schweitzer Engineering Laboratories (SEL), Beckwith Electric, Mors Smitt (Wabtec) and Arteche. Woodward (Industrial Controls) is listed as an emerging player.
Does Fanox Electronic have an API?
No public API is recorded for Fanox Electronic.
What industry is Fanox Electronic in?
Fanox Electronic's product category is Electrical Protection Relays. Its primary akta.pro industry code is EUADACAE, Protection Relays & Protection IEDs, with a secondary code of EUADAHAG, Protection, Fault Location & Adaptive Relaying for Reliability. Its NAICS code is 335314 and its SIC code is 3613.