Zaz-en

What Zaz-en does

ZAZ-En sp. z o.o. is a privately held Polish engineering firm, founded in 2010 and headquartered in Siemianowice Śląskie, that designs and manufactures the iZAZ family of digital multifunctional protection relays and supporting configuration software for power system protection and automation in industrial and professional energy applications. The company was established by personnel drawn from predecessor firms ZEG S.A. and ZEG-ENERGETYKA, and operates with a headcount in the 11–50 range. Its core technology is a uniform software platform spanning the iZAZ device family (iZAZ100, iZAZ200, iZAZ300, iZAZ350, iZAZ400, iZAZ600) and the specialized iZAZ-INJ 100% stator earth-fault protection relay, with modular hardware architecture, configurable protection functions (overcurrent, earth-fault/admittance, differential, distance, frequency, voltage, power, synchronization, automatic controls), and multi-protocol communications (MODBUS, DNP 3.0, IEC 61850) over USB, RS-485, and LAN/fibre. Devices are accompanied by the proprietary iZAZ Tools configuration suite, iREC disturbance analysis software, iZAZ-Scada for collective bay synoptic views, and iDraw for hardware version ordering, plus a dedicated IO-F module for arc-flash (iARC) protection.

The business sells configured-to-order hardware directly to Polish utilities, power-generation operators, and industrial power users (manufacturing plants, mining, large commercial installations, and renewable-energy sites including photovoltaic, wind, and cogeneration facilities). Revenue is generated primarily through hardware sales of configured protection relays and a service stream covering testing, preventive maintenance, power-supply regeneration, and support for both current iZAZ and legacy ZAZ (analogue) and CZAZ (digital) devices. No public pricing is available; all orders are placed through direct contact with the sales director and technical specialists. The go-to-market is consultative enterprise field sales, supported by a professional website, technical articles in Wiadomości Elektrotechniczne, and conference participation (e.g., SEP seminars). Operations are confined to Poland with no disclosed international footprint.

R&D activity is evidenced by the 2019 EU grant of 330,765.31 PLN (project total 522,737.08 PLN) under the Silesian Voivodeship ROP 2014–2020 that funded iZAZ-INJ, and by a continuing cadence of product releases: iZAZ-INJ (2019), iZAZ200-SPZ and DNP 3.0 support (2020), iZAZ400-S v2 panel (September 2024), iZAZ350 (March 2025), and a real-time logic diagram display (May 2025). Energy Institute (Instytut Energetyki) certifications are held across the full iZAZ line.

Name

Zaz-en

Legal name

ZAZ-En sp. z o.o.

Website

https://zaz-en.pl

Company type

Private

Founded year

2010

Operating status

Operating

Headcount range

11–50 employees

Short description

ZAZ-En sp. z o.o. is a privately held Polish engineering firm that designs and manufactures the iZAZ family of digital protection relays and proprietary configuration software for industrial and utility power-system protection. It sells configured-to-order hardware and service support to Polish utilities, power generators, and industrial power users.

Ownership category

akta.pro rank

Product category

Power System Protection Relays

NAICS

Switchgear and Switchboard Apparatus Manufacturing (335313), Relay and Industrial Control Manufacturing (335314), Electronic and Precision Equipment Repair and Maintenance (811210)

SIC

Switchgear & Switchboard Apparatus (3613), Instruments For Meas & Testing Of Electricity & Elec Signals (3825), Industrial Instruments For Measurement, Display, And Control (3823), Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA)

akta.pro secondary industries

Power Quality, Metering & Monitoring (HDACAJAG), Generator Installation & Transfer Switches (Standby/Portable Interlock) (HSAOADAF)

Keywords

• Digital protection relays
• Power system protection
• Generator-transformer protection
• Earth-fault protection devices
• Substation automation

Headquarters

HQ city

Siemianowice

HQ country

Poland

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Protection Relay Hardware Sales: ZAZ-En manufactures and sells the iZAZ family of digital multifunctional protection relays (iZAZ100 through iZAZ600), specialized protection devices (iZAZ-INJ), and associated software tools (iZAZ Tools). Products are sold as configured hardware units with software functions tailored to customer facility requirements. Revenue is generated from device sales with varying configurations (analogue channels, I/O modules, communication ports, control panels), and associated spare modules. The company also offers comprehensive service support including testing, preventive maintenance, and power supply regeneration for its own devices and legacy ZAZ/CZAZ devices.
2. Service and Support: Comprehensive service offer including testing of protection relay sets and their component modules, preventive regeneration of power supplies, periodical inspections during planned maintenance breaks, and emergency support. The company services its own iZAZ series devices as well as legacy ZAZ (analogue) and CZAZ (digital) devices manufactured by ZEG S.A. and ZEG-ENERGETYKA.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

ZAZ-En manufactures and sells the iZAZ family of digital multifunctional protection relays (iZAZ100 through iZAZ600) and specialized protection devices (iZAZ-INJ) for power system protection and automation in utility and industrial applications. The portfolio covers protection functions for medium voltage bays, high voltage bays, generators, transformers, motors, lines, photovoltaic plants, wind farms, and cogeneration units. Devices are supported by the proprietary iZAZ Tools configuration software and complemented by comprehensive service (testing, preventive maintenance, power-supply regeneration) for current iZAZ units and legacy ZAZ/CZAZ devices.

Product overview

ZAZ-En manufactures the iZAZ series of protective relays for industrial and professional power engineering. The product family includes iZAZ100 (single-function relays), iZAZ200/iZAZ300/iZAZ350/iZAZ400 (multifunctional relays for MV/HV bays, motors, transformers, generators), and iZAZ600 (high-capacity relays for generator-transformer blocks). A specialized product, iZAZ-INJ, provides 100% stator earth fault protection using signal injection. All devices share a uniform software platform enabling consistent configuration and interoperability, supported by iZAZ Tools software for PC-based device management and iDraw for hardware version configuration. The portfolio scales from simple 3-input relays to comprehensive protection systems with up to 48 measurement inputs.

Differentiator

Problem solved

Functional benefit

Brands

• iZAZ: Series of multifunctional digital protection relays for power engineering, including models iZAZ100, iZAZ200, iZAZ300, iZAZ350, iZAZ400, iZAZ600, and iZAZ-INJ
• iZAZ Tools
• iZAZ-INJ
• iZAZ-INT

Products and services

• iZAZ100 Single-function digital protection relay series with up to three measurement inputs, covering voltage, current, earth-fault, frequency, time, and special relays. Mounted in a non-flammable fuse-type enclosure for TS35 rail mounting; aimed at simple protection applications in power distribution and industrial installations.
• iZAZ200 Multifunctional digital protection relay with up to four measurement inputs providing power, voltage, current, frequency, and earth-fault protection, with RS-485 and USB communication. Supports automatic controls including frequency load shedding, reclosing, and voltage load shedding; targets compact MV bay and industrial protection applications.
• iZAZ300 Advanced multifunctional digital protection relay with up to eight configurable measurement inputs; economic version for MV switchgear protection, motors, transformers, and small generators with RS-485 and mini-USB communication. Targets cost-sensitive protection applications requiring multi-function capability.
• iZAZ350 Versatile protection relay for MV bay protection, photovoltaic applications, wind farms, cogeneration, generator and transformer protection, and HV line distance and differential protection. Available in S, M, and L modular enclosure versions with up to 32 measurement inputs; targets broad multi-application use across utility, industrial, and renewable generation sites.
• iZAZ400 Versatile multifunctional relay with bay controller for comprehensive protection of medium voltage bays, high voltage bays, and small generators. Modular design with up to 12 measurement inputs, 7-inch color touch display, RS-485, LAN, and USB communication; supports five-zone distance protection, differential line protection, and arc protection.
• iZAZ600 High-capacity protection relay designed for generators and generator-transformer blocks with up to 48 measurement inputs, 128 binary inputs, and 233 relay outputs. Features a 7-inch color touch display, modular design for protection cabinets or ready-made protection cabinets with full redundancy options; targets the largest power-generation assets.
• iZAZ-INJ 100% stator earth fault protection device using the signal injection method, designed for generators connected via block transformer with neutral point grounded through a resistor. Includes two-stage stator earth fault protection R<, third harmonic undercurrent protection, and zero-sequence overcurrent protection; works in conjunction with the iZAZ-INT protective system and avoids the need for an isolating transformer or additional current transformer.
• iZAZ Tools Proprietary utility software for controlling the iZAZ device family via PC running Microsoft Windows. Enables comprehensive device configuration and settings through a graphical editor, status monitoring and control, and event/disturbance recording analysis using the included iREC software; communicates with devices via MODBUS protocol using USB, RS-485, or TCP/IP interfaces.

Quantifiable outcome

• The company has been dynamically developing since establishment, recognized with 'Gepard Biznesu' awards in both 2016 and 2017 by the European Business Institute.

Segments2 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

Feature10 records

Partnerships

Three partnerships are on record, tiered core and minor.

• Zakład Produkcyjny Aparatury Elektrycznej (ZPrAE) Sp. z o.o.coreStrategic or Co-development PartnerZPrAE, based in Siemianowice Śląskie, is described as a reliable partner supporting ZAZ-En's operations. The company provides manufacturing/production support and infrastructure as part of ZAZ-En's operational foundation.
• Instytut Energetyki, Warszawa (Energy Institute, Warsaw)coreStrategic or Co-development PartnerClose collaboration with Dr. Zygmunt Kuran from the Energy Institute in Warsaw on the development of the iZAZ-INJ 100% stator earth-fault protection solution. The Energy Institute also conducted functional testing and EMC compatibility testing of iZAZ devices, resulting in the issuance of certificates for power engineering applications. Certificates from the Energy Institute are available for iZAZ100, iZAZ200, iZAZ300, iZAZ350, iZAZ400, iZAZ600, and iZAZ-INJ.
• ZEG S.A. (Zakład Elektroniki Górniczej) and ZEG-ENERGETYKA Sp. z o.o.minorStrategic or Co-development PartnerZAZ-En was established by entities with long experience in power system protection device manufacturing at ZEG S.A. in Tychy, and during the establishment and operation of ZEG-ENERGETYKA. ZAZ-En's service offering explicitly covers support, testing, and maintenance of legacy ZAZ (analogue) and CZAZ (digital) devices originally manufactured by ZEG S.A. and ZEG-ENERGETYKA.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Siemens Smart Infrastructure: Offers the SIPROTEC 4/5 protection relay family covering distance, differential, overcurrent, and generator protection — directly comparable product-by-product to the iZAZ family but embedded within Siemens' broader grid-software and substation portfolio.
• GE Vernova (Grid Solutions): Provides the Multilin and B30 protection relay lines for transmission, distribution, and generator applications; competes with ZAZ-En in Polish and European utility tenders as part of GE's broader grid equipment offering.
• ABB: Global incumbent offering the Relion series of protection and control relays covering generator, transformer, line, and bay applications; competes with ZAZ-En across the full iZAZ portfolio but as part of ABB's much wider substation and grid-automation portfolio.
• Schneider Electric: Markets the Easergy and Sepam protection relay families for MV and HV applications — directly comparable to the iZAZ400/600 use cases — but as one offering within Schneider's full EcoStruxure power-and-building portfolio.
• Eaton: Global power management company offering a comprehensive protection relay portfolio (e.g., Eaton Power Defense, E-Series) within a much broader electrical portfolio; competes against ZAZ-En in industrial and utility MV applications but does not specialize narrowly in PSP automation.

Emerging players

• Woodward: U.S. specialist in control and protection solutions for power generation (governors, exciters, generator protection) — strong overlap with ZAZ-En's iZAZ-INJ and iZAZ600 generator-protection focus, but more focused on turbine/governor controls than on bay/line protection.
• Ingeteam: Spanish supplier of protection relays (INGEPAC family) and power-conversion equipment for renewable and industrial applications — comparable to ZAZ-En in industrial-power and renewable (PV/wind) protection niches, with a stronger footprint in Iberia and Latin America.

Direct peers

• Beckwith Electric: U.S. specialist in protection, controls, and synchronizing solutions for the electric power industry, with overlapping product categories (generator and transformer protection, reclosing, voltage regulation) comparable to iZAZ600 and iZAZ400 capabilities.
• Arcteq: Finnish specialist in numerical protection relays and arc-flash protection for utilities and industry — closely comparable niche specialist to ZAZ-En in European markets, with similar modular hardware and unified-software positioning.
• Schweitzer Engineering Laboratories (SEL): U.S.-headquartered specialist manufacturer of digital protection relays, automation controllers, and communications for power systems — a closest direct peer to ZAZ-En in product scope (overcurrent, distance, differential, generator protection) and target customers (utilities and industrial power operators).

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/zaz-en

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

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 Zaz-en