Measure. Regulate.
Across All Grids.

Shaping the Grid Infrastructure of Tomorrow - This Is Our Goal. With Our Future-Oriented Solutions, We Help Our Customers to Face Future Challenges.

Measure. Regulate.
Across All Grids.

Shaping the Grid Infrastructure of Tomorrow - This Is Our Goal. With Our Future-Oriented Solutions, We Help Our Customers to Face Future Challenges.

The Right Solution for All Voltage Levels

Nuclear power plant

REGSys®
Monitor. Register. Control.
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
REG-DA
Regulate, monitor, register, control
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

High voltage line

EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
EOR-1DS
The earth fault and short-circuit indicator for in-depth location across the network
to the product

Pinwheels

PQI-DA smart
The Power Quality Allrounder
to the product
REG-DA
Regulate, monitor, register, control
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
PQ-Box 200
The mobile tool for the expert
to the product

Photovoltaic park

EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
REG-DA
Regulate, monitor, register, control
to the product
LVRSys®
Low Voltage Regulation System
to the product
EOR-1DS
The earth fault and short-circuit indicator for in-depth location across the network
to the product

Substation

REG-DP(A)
The arc suppression coil regulator in an IP54 housing
to the product
Power feed
Solutions for different network topologies
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
REGSys®
Monitor. Register. Control.
to the product
PQ-Box 200
The mobile tool for the expert
to the product

Offshore wind farm

EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

Charging station

PQ-Box 150
The mobile Power Quality Allrounder
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQ-Box 50
The Universal Network Analyser
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

Transformer station compact

EOR-1DS
The economical earth fault & short-circuit indicator for the future-proof secondary substations
to the product
EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQI-LV
Enhancing Transparency in the Low-Voltage Grid
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product

Hydroelectric power plant

REGSys®
Monitor. Register. Control.
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product
PQ-Box 200
The mobile tool for the expert
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

Transformer station

EOR-1DS
The economical earth fault & short-circuit indicator for the future-proof secondary substations
to the product
EOR-3DS
The freely programmable earth fault and short-circuit indicator
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
PQ-Box 50
The Universal Network Analyser
to the product

Industrial factory

PQI-LV
Enhancing Transparency in the Low-Voltage Grid
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
REG-DA
Regulate, monitor, register, control
to the product
LVRSys®
Low Voltage Regulation System
to the product
REG-DP(A)
The arc suppression coil regulator in an IP54 housing
to the product
Power feed
Solutions for different network topologies
to the product
PQI-DE
The Tool for Power-Quality-Experts
to the product

Energy saving house

PQ-Box 200
The mobile tool for the expert
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 50
The Universal Network Analyser
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product

E-Mobility

PQ-Box 50
The Universal Network Analyser
to the product
PQI-DA smart
The Power Quality Allrounder
to the product
PQ-Box 300
The Tool for High Frequency Ranges
to the product
LVRSys®
Low Voltage Regulation System
to the product
PQ-Box 150
The mobile Power Quality Allrounder
to the product
PQ-Box 200
The mobile tool for the expert
to the product

Voltage regulation

Regulation, supervision and monitoring of step transformers in medium and high voltage networks

Low Voltage Regulation

String control that can even regulate overvoltages within 15 to 25 ms.

Power Quality

Powerful network and frequency analyzers, power meters and transient recorders.

Short-Circuit and Earth Fault Indicators

The combination of different location methods enables reliable fault location.

Earth Fault Compensation & Current Injection

Control of Petersen coils that can be continuously adjusted under load.

Product Portfolio

The Right Device for Every Application

Looking for
the Right Device?

We Are Happy to Help!

Get in Touch Now.

Our Product
Portfolio at a Glance

Download Flyer

Product News

Our Latest Product Developments

EOR-1DS

The Economical Earth Fault & Short-Circuit Indicator for Analog Secondary Substations

The »EOR-1DS« is a compact, combined short-circuit and earth fault location indicator that offers all essential location methods. The device was specially developed as a cost-effective alternative to comparable solutions on the market.

Lerarn more

WebPQ^®

The Easy Way to Analyse Your Power Quality Measurement Data

The new WebPQ^® is the central analysis software for all fixed installed fault recorders, power quality monitoring devices and for the evaluation of the portable power quality analysers* from A. Eberle.

Learn More

*upcoming versions

PQI-LV

Enhancing Transparency in the Low-Voltage Grid

The PQI-LV is a cost-effective class A power quality analyzer & fault recorder in accordance with IEC 61000-4-30 Edition 3 and has been developed especially for low-voltage monitoring. It is characterized by its compact design, high-quality measurement technology and simple installation thanks to sensor technologies such as Rogowski coils and current sensors.

Learn More

A. Eberle knowledge database

Application examples, webinars, training videos - everything related to our products and their use.

to our knowledge base

Clarity, Openness and Fairness

This Is What A. Eberle Stands For

With our high-quality technical solutions, we offer security and quality of supply for the benefit of all. With our values of CLARITY, OPENNESS and FAIRNESS, we stand for a humane corporate culture and make our contribution to developing a fair society.

Current News

Short video presentation »PQ-Box ONE«

Ahead of the official launch on February 25, 2026, we are releasing a short video about the new »PQ-Box ONE« that provides an initial overview of the key features of the new PQ measuring device.

»PQ-Box 150« and »PQ-Box ONE«

PQ-Box 150 and PQ-Box ONE in practical comparison: PQ-Box 150 and PQ-Box ONE both deliver Class A measurements, but differ in terms of installation, handling and areas of application.

A. Eberle welcomes Amarillo as a new REGSys® partner in Mexico

A. Eberle is expanding its international partner network and is pleased to welcome »Amarillo Naranja S.A. de C.V.« as a new »REGSys®«-partner in Mexico.

A. Eberle at the Schwabach City Run 2025

A. Eberle was represented by 37 participants at the 2025 Schwabach City Run, setting a new internal record for participation. Particularly noteworthy is Benjamin Rentsch's first place in the M 35 40 age group and third place overall.

TOP 100 Awards 2025: Innovation for the Energy Future

💡 As part of the TOP 100 Awards 2025, we were honored to receive a special recognition last week in Mainz – personally presented by TV host and science journalist Ranga Yogeshwar.

Visit From the Rudolf Diesel Technical School at A. Eberle

We were happy to welcome you, Rudolf-Diesel-Fachschule! Yesterday, we had the pleasure of welcoming two classes of future electrical engineering technicians from the Rudolf-Diesel-Fachschule Nürnberg to our company in Nuremberg.

University Excursion: Pentecost Excursion of the Friedrich-Alexander-University Erlangen-Nuremberg (FAU)

As a company dedicated to innovation, education, and the energy transition, we are pleased to have once again supported the Whitsun excursion of Friedrich-Alexander University Erlangen-Nuremberg (FAU) this year.

Further Growth at A. Eberle

Welcome to the team! We welcome our new colleagues at A. Eberle.

Specialist Training on Power Quality

On 27 May 2025, everything revolved around electricity, faults and how to recognise them in a specialist training course on power quality at the Balthasar Neumann Technical Centre in Trier (BNT).

Visit From the Erlangen Technical School at A. Eberle

On 22 May 2025, A. Eberle welcomed two classes from the technical school of the city of Erlangen - true to the motto: From theory to practice.

First »LVRSys® - Low-Voltage Regulation« System in South Africa

We are excited to share another milestone in grid stability and energy efficiency: the first »LVRSys®« - low-voltage regulation system in south africa has been successfully commissioned!

Awarded Again: A. Eberle Is Among the Top 100 Most Innovative Medium-Sized Companies in Germany

A. Eberle is once again one of the 100 most innovational medium-sized companies in Germany in 2025. This award recognises our commitment to pioneering solutions.

PQ-Box User Training in Başiskele (Turkey) With Our Partner GENETEK Enerji Sistemleri Ltd.

In August, we held a training course with our partner GENETEK Enerji Sistemleri Ltd for our portable PQ network analyzers in Turkey.

International Partner Week 2024 - a Look Back

Our International Partner Week 2024 - many old friends and new faces were our guests, it was a pleasure.

A. Eberle Receives Prestigious TOP 100 Innovator Award 2024

A. Eberle honoured with TOP 100 Innovation Award 2024. Honoured at the »SME Summit 2024« for outstanding innovation performance.

Why A. Eberle?
Your Partner at Eye Level

Tailor-Made Solutions

Every product has specific requirements which we can fulfil thanks to our long years of experience in the sector.

Energy for the Future

We support our customers in developing network infrastructure and combining reliability with economy.

The Customer in Focus

Identifying customer needs at an early stage and incorporating them into innovative devices is one of our strengths.

Special Publications

Application Examples of Our Products

Low-Voltage Line Voltage Regulators for Stable Low-Voltage Grids | Practical example: »LVRSys®« at »ovag Netz GmbH«

A distribution voltage regulator stabilizes LV feeders locally where PV and load peaks cause deviations. This practical example from ovag Netz shows how LVRSys® supports fast, measurable voltage control without immediate cable reinforcement.

LVRSys® Voltage Regulation in Low-Voltage Networks - Solving Pv-Related Overvoltage Issues

The LVRSys® low voltage regulation system stabilizes voltage in PV-dominated low-voltage networks, preventing EN 50160 violations and avoiding expensive grid reinforcement.

Power Quality Monitoring in Buildings - A Key Factor in Modern Building Design

Discover how Power Quality Monitoring in Buildings improves reliability, efficiency and grid stability. Learn more in our technical article.

Continuous Power Quality Monitoring in the Jupiter Data Centre - Voltage Quality at Exascale Level

With JUPITER, Forschungszentrum Jülich operates Europe's fastest supercomputer and sets new standards for energy efficiency, grid stability, and standard-compliant power quality with PQSys from A. Eberle.