
Development and manufacture of custom industrial power supplies, converters, chargers and mains compensation systems

Schäfer Elektronik GmbH
Achern (DE) · Bantry, Co. Cork (IE) · Hopkinton, MA (US) · Dubai (AE)New on Amplifa
About Schäfer Elektronik
Schäfer Elektronik GmbH, headquartered in Achern (southern Germany), develops and manufactures industrial power supplies and power electronics: AC/DC and DC/DC converters, DC/AC inverters, AC/AC frequency converters, battery chargers and power supply systems from 100 W to 100 kW (modular up into the megawatt range), thyristor-controlled chargers from 500 W to 500 kW, and active harmonic filters for mains compensation. In addition, the company offers stationary and mobile charging infrastructure for e-mobility as well as the patented personalized machine unlocking system (PMF) for machine safety. The solutions are often designed for safety-critical applications on land, at sea and underwater, and are customized or newly developed to customer requirements. Customers include the power plant and defense industries, rail, oil and gas, marine/deep-sea, automation and the semiconductor industry, as well as data centers. With around 200 employees worldwide, a production facility in Ireland and sales offices in the USA and the UAE, the company serves customers globally.
- Site
- Achern
- Processes
- AC/DC power supplies & chargers (switchmode), DC/DC converters (switchmode), DC/AC inverters (200VA–45kVA, single- or three-phase), AC/AC frequency converters (200VA–45kVA), Power supply systems & battery chargers (100W–100kW, modular up to megawatt range), Thyristor-controlled battery chargers & power supply systems (500W–500kW), Active harmonic filters (mains compensation, e.g. PBAF 400-60-L, 60A/480V air-cooled; 140A/690V, Stationary charging infrastructure (300 kW fast charging station with battery storage)
- Materials
- Industrial enclosure powder-coated (sheet steel, coating powder coating), Powder-coated industrial enclosures, Switchmode converter technology, Thyristor-controlled technology
- Employees
- approx. 200 worldwid
- Industries
- Energy (power plant, substation, fossil, nuclear, renewable), Defense industry (land, naval, submarine), Industry/automation/mechanical engineering, Semiconductor industry, Rail (on-board and stationary, signaling technology), Oil & gas (onshore, offshore, underwater)
- 01
Custom development and design
- 02
Power electronics manufacturing (Achern, Ireland)
- 03
Modification to customer specifications
- 04
Testing and delivery
- 05
Global support via subsidiaries and representatives
Technology & Designs
Powder-coated industrial enclosures
Sheet steel enclosures with powder coating, e.g. for the PMF control system (IP42).
Switchmode converter technology
AC/DC and DC/DC converters in switchmode technology from 100 W to 100 kW, air- or liquid-cooled.
Thyristor-controlled technology
Battery chargers and power supply systems from 500 W to 500 kW in thyristor-controlled design.
Locations

Achern
DEHeadquarters with development and production
- Lot size
- Small to large production volumes
- Development and production floor space (extended by approx. 1800 m² since 2010)
- 300 kW fast charging station with battery storage on site
Bantry, Co. Cork
IEProduction facility (SCHAEFER GmbH Branch Ireland)
Hopkinton, MA
USSales office (SCHAEFER, Inc.)
Dubai
AESales office (SCHAEFER GmbH Branch Middle East, Dubai Airport Free Zone)
Products & Systems






Inside the production





Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| AC/DC power supplies & chargers (switchmode)Electronics | – | – | – | – | – |
| DC/DC converters (switchmode)Electronics | – | – | – | – | – |
| DC/AC inverters (200VA–45kVA, single- or three-phase)Electronics | – | – | – | – | – |
| AC/AC frequency converters (200VA–45kVA)Electronics | – | – | – | – | – |
| Power supply systems & battery chargers (100W–100kW, modular up to megawatt range)Electronics | – | – | – | – | – |
| Thyristor-controlled battery chargers & power supply systems (500W–500kW)Electronics | – | – | – | – | – |
| Active harmonic filters (mains compensation, e.g. PBAF 400-60-L, 60A/480V air-cooled; 140A/690VElectronics | – | – | – | – | – |
| Stationary charging infrastructure (300 kW fast charging station with battery storage)Electronics | – | – | – | – | – |
| Mobile HV/DC fast charger (85kW or 42kW @ 800V, DC output 150–1000VDC, 0–300A, 125 kg,Electronics | – | 730 mm × 550 mm × 850 mm | 125 kg – 125 kg | – | – |
| Machine safety: personalized machine unlocking PMF 1.8 (patented, retrofit forElectronics | – | 380 mm × 380 mm × 230 mm | – | – | Industrial enclosure powder-coated |
| Custom development & manufacture of industrial power supplies (custom solutions)Engineering | – | – | – | – | – |
| Liquid-cooled power supplies (e.g. 15kW for oil platform, 40kW for semiconductor manufacturing)Electronics | – | – | – | – | – |
Additional services
Reference customers
History
- 1969
Foundation of the company; over 50 years of experience in power supply technology.
- 1986
Foundation of the subsidiary SCHAEFER, Inc. in Boston (USA)
- 1989
Foundation of the production facility SCHAEFER GmbH Branch Ireland in Bantry, Co. Cork, under the leadership of Pierce Endersen and Robert Murphy
- 1997
Dipl.-Ing. Hansjürgen Schäfer becomes Managing Director and company owner as of 01.07.1997
- 2005
Opening of the branch office in Dubai (UAE)
- 2010
Expansion of production and development at the German site by approx. 1800 m²
- 2021
Personalized machine unlocking (PMF) successfully deployed in-house