# VONSCH spol. s r.o.

> Slovak manufacturer of power electronics - frequency converters, photovoltaic and battery inverters, reactive power compensation.

- Web: https://vonsch.sk/
- Seat: Brezno, Slovakia
- Founded: 1990
- Focus: B2B, industrial applications, own R&D and manufacturing

## About the company

VONSCH spol. s r.o. is a family-owned Slovak company founded in 1990, based in Brezno. We specialise in power electronics - frequency converters (UNIFREM, QUATROFREM), photovoltaic and battery inverters (NEXICONTROL), reactive power compensation (NEXICONTROL COMP) and custom engineering for industrial applications. In-house R&D, manufacturing, non-stop technical support.

## Key products

- [NEXICONTROL](https://vonsch.sk/products/nexicontrol/en): Photovoltaic and battery inverter - VONSCH's only currently offered inverter (PV + battery storage, off-grid, fuel-save).
- [NEXICONTROL 100 PLUS](https://vonsch.sk/products/nexicontrol-100-plus/en): NEXICONTROL 400 100-200 inverter (higher power class) for larger PV and battery installations.
- [NEXICONTROL COMP (STATCOM)](https://vonsch.sk/solutions/reactive-power/en): Active STATCOM reactive power compensator (NEXICONTROL variant, 50-200 kVAr).
- [UNIFREM 400 / 500 / 690 / 230E](https://vonsch.sk/products/unifrem-400/en): VONSCH frequency converters, ratings from kW up to 1400 kW, 400 V / 500 V / 690 V / 230 V.
- [UNIFREM 400M / 400E](https://vonsch.sk/products/unifrem-400m/en): Converters in compact M version and E (economic) version for pumps, fans and common applications.
- [QUATROFREM 400](https://vonsch.sk/products/quatrofrem-400/en): Regenerative 4-quadrant converters with energy feedback to the grid.
- [NEXIFREM (in development)](https://vonsch.sk/products/nexifrem/en): New-generation VONSCH frequency converters (replacing UNIFREM/VQFREM); modular platform, IoT, Modbus TCP/RTU, CAN. The 4Q variant (ANPC SiC, Active Front-End) supports regeneration.
- [SINAM 400 / 400M](https://vonsch.sk/products/sinam-400/en): Soft starters up to 1000 kW for smooth motor starting.
- [NEXISTORAGE R18](https://vonsch.sk/products/nexistorage-r18/en): Battery energy storage (Li-ion), modular, for industrial deployment.
- [NEXIBOOST](https://vonsch.sk/products/nexiboost/en): DC-DC converter for mining locomotives and traction applications.
- [LV modules](https://vonsch.sk/products/lv01-modules/en): LV IGBT power modules for custom applications.
- [LOKO BMS](https://vonsch.sk/products/loko-bms/en): Battery management system for Li-ion in mining and hybrid locomotives (BMS12C + BMSM3V3, RS-485, PROFINET, Modbus TCP).

## Solutions

- [Mining traction (FLAGSHIP - European leader)](https://vonsch.sk/solutions/traction/en): 100+ mining locomotives across 8 countries in Europe + Australia. Battery, trolley and hybrid locos. Traction inverters 11-250 kW, ATEX (Ex ib + Ex d), Li-ion modernisation, NEXIBOOST DC-DC, LOKO BMS.
- [Electric drives](https://vonsch.sk/solutions/electric-drives/en): Frequency converters for pumps, fans, conveyors, cranes, lifts, traction. Range 0.75 kW - 1400 kW.
- [Photovoltaics (industrial, off-grid, fuel-save)](https://vonsch.sk/solutions/solar-energy/en): Industrial PV plants, off-grid containers, fuel-save hybrid systems for Africa and the Middle East. Not household solutions.
- [Battery Energy Storage](https://vonsch.sk/solutions/battery-storage/en): Industrial battery energy storage, peak shaving, backup, grid stabilisation.
- [Reactive power compensation (STATCOM)](https://vonsch.sk/solutions/reactive-power/en): Active reactive power compensation for industrial loads - NEXICONTROL COMP, STATCOM. References: ZSR Banovce-Humenne 2025 (200 kVA), PV Drzovice CZ, Substation Kosice, FUEL SAVE Badhan Somalia, PV Slatinka SK.
- [UPS backup power supplies](https://vonsch.sk/solutions/ups/en): UPS backup systems for industry and infrastructure - online double conversion, parallel UPS, UPS for machinery.
- [Small Hydro Power Plants](https://vonsch.sk/solutions/hydropower/en): Control systems and converters for small hydro power plants.
- [Microgrid](https://vonsch.sk/solutions/microgrid/en): Artificial 50/60/400 Hz mains and microgrids - custom voltage sources to customer specification.

## Services

- [VONSCH Energy Cloud](https://vonsch.sk/services/energy-cloud/en): Web portal vonsch.cloud (SK/EN) for owners of plants with VONSCH IPC. Online monitoring, trends, faults, CSV export from any browser.
- [Custom development](https://vonsch.sk/services/custom-development/en): Specific engineering - custom converters, control systems, integrations for industrial applications where off-the-shelf solutions don't fit.
- [Service and support 24/7](https://vonsch.sk/servis/en): Non-stop technical support, remote diagnostics, service centers, long-term care of installed equipment.
- [Training](https://vonsch.sk/skolenie/ponuka_skoleni/en): Free professional training for designers, technicians, operators and service - VONSCH Academy.
- [Request a solution proposal](https://vonsch.sk/request/en): Conversion form - describe your application (motor, rated power, environment, grid connection) and sales replies within 24h with a quotation.

## Reference industries

- [Energetics](https://vonsch.sk/references/industry/en?code=energetika): reference projects in Energetics (32)
- [Mechanical engineering](https://vonsch.sk/references/industry/en?code=p_strojarsky): reference projects in Mechanical engineering (10)
- [Mining](https://vonsch.sk/references/industry/en?code=bane): reference projects in Mining (10)
- [Other](https://vonsch.sk/references/industry/en?code=ostatne): reference projects in Other (7)
- [Cranes](https://vonsch.sk/references/industry/en?code=p_zeriavy): reference projects in Cranes (3)
- [Food and Beverage](https://vonsch.sk/references/industry/en?code=p_potravinarsky): reference projects in Food and Beverage (3)
- [Wood industry](https://vonsch.sk/references/industry/en?code=p_drevarsky): reference projects in Wood industry (2)
- [Industry](https://vonsch.sk/references/industry/en?code=priemysel): reference projects in Industry (2)
- [Elevators](https://vonsch.sk/references/industry/en?code=p_vytahy): reference projects in Elevators (1)
- [Water distribution](https://vonsch.sk/references/industry/en?code=v_vody): reference projects in Water distribution (1)
- [Chemical industry](https://vonsch.sk/references/industry/en?code=p_chemicky): reference projects in Chemical industry (1)
- [Textile industry](https://vonsch.sk/references/industry/en?code=p_textilny): reference projects in Textile industry (1)
- [Heat generation](https://vonsch.sk/references/industry/en?code=t_vyrobatepla): reference projects in Heat generation (1)
- [Metallurgy](https://vonsch.sk/references/industry/en?code=p_hutnicky): reference projects in Metallurgy (1)

## Contact

- Name: VONSCH spol. s r.o.
- Address: Budovatelska 13, 977 03 Brezno, Slovakia
- Reg. No.: 31 590 545
- VAT: SK2020476136
- Phone: +421 905 253 188
- Main e-mail: info@vonsch.sk
- Service and technical support: +421 905 253 188
- Web: https://vonsch.sk/

## Main pages

- [Home](https://vonsch.sk/en)
- [About us](https://vonsch.sk/company/about-us/en)
- [Company profile](https://vonsch.sk/company/profile/en)
- [Mission](https://vonsch.sk/company/mission/en)
- [Timeline (history)](https://vonsch.sk/company/history/en)
- [Certificates](https://vonsch.sk/company/certificates/en)
- [Awards](https://vonsch.sk/company/awards/en)
- [Career](https://vonsch.sk/company/careers/en)
- [Products - UNIFREM 400](https://vonsch.sk/products/unifrem-400/en)
- [Products - NEXICONTROL](https://vonsch.sk/products/nexicontrol/en)
- [Products - NEXIFREM (in preparation)](https://vonsch.sk/products/nexifrem/en)
- [Products - archive (all legacy)](https://vonsch.sk/products/archive/index/en)
- [Solutions - mining traction (FLAGSHIP)](https://vonsch.sk/solutions/traction/en)
- [Solutions - drives](https://vonsch.sk/solutions/electric-drives/en)
- [Solutions - PV](https://vonsch.sk/solutions/solar-energy/en)
- [Solutions - battery storage](https://vonsch.sk/solutions/battery-storage/en)
- [Solutions - reactive power](https://vonsch.sk/solutions/reactive-power/en)
- [Solutions - UPS](https://vonsch.sk/solutions/ups/en)
- [Solutions - small hydro](https://vonsch.sk/solutions/hydropower/en)
- [Solutions - microgrid](https://vonsch.sk/solutions/microgrid/en)
- [Services - Energy Cloud](https://vonsch.sk/services/energy-cloud/en)
- [Services - custom development](https://vonsch.sk/services/custom-development/en)
- [Service 24/7 and support](https://vonsch.sk/servis/en)
- [Request a solution proposal](https://vonsch.sk/request/en)
- [References](https://vonsch.sk/references/index/en)
- [Blog / News](https://vonsch.sk/blog/index/en)
- [VONSCH Magazine (PDF archive)](https://vonsch.sk/magazin/archiv/en)
- [Training](https://vonsch.sk/skolenie/index/en)
- [Support and manuals](https://vonsch.sk/support/index/en?product=0H0)
- [Contacts](https://vonsch.sk/contact/en)
- [Sitemap XML](https://vonsch.sk/sitemap.xml)
- [Full dump (Markdown)](https://vonsch.sk/llms-full.txt)

## Other

- robots.txt: https://vonsch.sk/robots.txt
- Language (EN): https://vonsch.sk/llms.txt?lang=en
- Language (SK): https://vonsch.sk/llms.txt?lang=sk

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