For fast, on-site clarification of voltage issues and disturbances in grids and networks at sockets and end circuits. It supports operations, maintenance and service work with reliable measurement data for decisions and documentation.

Typical Application:

  • Clarifying recurring disturbances at sockets, feeders or individual loads
  • Pinpointing issues after modifications, extensions or equipment replacement
  • Assessing anomalies affecting charging infrastructure, drives or sensitive equipment
  • Documenting events for internal clarification and discussions with third parties

This Device Is Suitable If:

  • You need to substantiate disturbances directly at the affected load with clear evidence
  • You want to pinpoint the timing and trigger of anomalies unambiguously
  • You require measurement data for internal decisions or communication with third parties
  • You need a time-limited check without interfering with the fixed installation in the grid or network

The PQ Analyser for Socket Outlet Measurements

PQ-Box ONE

The »PQ-Box ONE« is the ideal tool for fast power quality analysis directly at the socket outlet. It combines highest measurement accuracy, easy handling and a compact design in a single device. The power quality analyser was specifically developed for mobile applications in low-voltage networks and enables the assessment of voltage quality in accordance with EN 50160 and IEC 61000-2-2 and IEC 61000-2-4. Thanks to the integrated power supply and the automatic measurement start function, simply plugging the device into a socket outlet is sufficient and the measurement starts immediately. Typical applications include energy audits, fault analysis, disturbance investigations and power quality assessments in industry, energy supply and building services engineering. The PQ-Box ONE is evaluated using the proven and particularly user-friendly WinPQ mobil software and or via the PQ-Box App.

Further questions or want to start an enquiry? Please click “Product Enquiry”.

Direct Power Quality Analysis at the Point of Connection
Residential Buildings with PV Systems, Wallboxes & Heat Pumps
Electrical Installations in Office Buildings & Commercial Properties
Industrial Facilities & Production Plants
Data Centres & Server Rooms
Wallboxes & Charging Infrastructure
Commercial PV Systems (Compliance with EN 50160)
Balcony Power Systems & Mini PV Installations
Battery Storage Systems & Storage Power Plants (MV/LV)

Measure. Regulate. Across All Grids.

A. Eberle GmbH & Co. KG, founded in 1980 and headquartered in Nuremberg, Germany, operates in the field of measurement and regulation technology for the energy sector as well as for medium-sized and large industrial companies. Our products and services ensure and enhance the availability of energy supply across all voltage levels and support the integration of renewable energy sources into power grids.

Cross-Product Downloads

Special Publications
Flyer
Feature Matrix
Product Overview A. Eberle
A. Eberle Seminars in Nuremberg

Accessories

Catalogue
Current Clamp
Rogowski Current Clamps
Adapter Cable Set
Remote Access
Calib-Box
External Power Supply

Designed for Precise Power Quality Analysis Directly at the Socket Outlet

The PQ-Box ONE is a powerful Class A measuring device in accordance with IEC 61000-4-30 Ed. 4. It measures voltage, current and power between phase, neutral and earth, enabling a comprehensive real-time assessment of power quality.

Thanks to preconfigured triggers and automatic detection functions, it delivers fast and reliable results even in complex network conditions. Simply plug in, measure and evaluate. No complex setup required.

Compact, Robust and Designed for Mobile Use - Ideal for Applications in Industry, Energy Supply and Building Services Engineering

The PQ-Box ONE combines a robust housing with a particularly compact and easy-to-handle design. With an integrated power supply and minimal weight, it is ideally suited for mobile use in low-voltage applications (300 V CAT II).

Whether in the workshop, laboratory, building services engineering, office and commercial buildings or directly on site at the customer’s premises, the PQ-Box ONE can be used wherever fast results are required and space is limited.

Precise Class A Measurement for Energy Audits and Network Assessment

The PQ-Box ONE meets all requirements for Class A measuring devices in accordance with IEC 61000-4-30 Ed. 4 and also serves as a precise power meter for energy audits in line with ISO 50001. It records voltage, current and power with the highest accuracy and provides a reliable basis for assessing power quality, directly within the network at the individual consumer level.

This makes it a valuable source of information for optimising energy efficiency, network stability and system availability.

Automatic Recording and Easy Evaluation with WinPQ mobil

The PQ-Box ONE reliably records measurement data over periods of several weeks. Via Wi-Fi or USB-C, this data is transferred quickly and securely to the WinPQ mobil software or the PQ-Box App. The particularly user-friendly evaluation tools enable simple, standards-compliant analysis and clear visualisation of all network parameters.

As a result, utilities, industrial companies and electrical contractors benefit from a compact all-in-one solution for precise and efficient power quality analysis.

Video-Presentation: PQ-Box ONE

You Have Questions About the PQ-Box ONE?

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Not Sure What Device Is the Right One for You?

Find the Right Power Quality Analyzer for Your Application

PQ-Box ONE

netzanalyse-mobil

PQ-Box 50

mobiler-netzanalysator

PQ-Box 150

mobiles-netzanalyse-gerät

PQ-Box 200

netzanalysator-gerät

PQ-Box 300

20,48 kHz

Sampling frequency voltage

20,48 kHz

Sampling frequency curent

-

2 (16-bit)

Input voltage (resolution)

1 (16-bit)

Input current (resolution)

-

1 GB

Memory size

WLAN / USB-C

(UPS 30 s)

Operating time via battery
netzanalyse-mobil

20,48 kHz

Sampling frequency voltage

20,48 kHz

Sampling frequency current

-

4 (16-bit)

Input voltage (resolution)

4 (16-bit)

Input current (resolution)

-

1 GB

Memory size

WLAN

2 h

Operating time via battery
mobiler-netzanalysator

20,48 kHz

Sampling frequency voltage

20,48 kHz

Sampling frequency current

-

4 (24-bit)

Input voltage (resolution)

4 (24-bit)

Input current (resolution)

-

4GB (32)

Memory size (optional)

S1

WLAN

4,0 h

Operating time via battery
mobiles-netzanalyse-gerät

40,96 kHz

Sampling frequency voltage

40,96 kHz

Sampling frequency current
up to

4 MHz

Sampling frequency transient measurement

4 (24-bit)

Input voltage (resolution)

5 (24-bit)

Input current (resolution)

Binary input

8GB (32)

Memory size (optional)

S1

WLAN

4,0 h

Operating time via battery
netzanalysator-gerät

40,96 kHz

Sampling frequency voltage

40,96 kHz

Sampling frequency current

409,60 kHz

Sampling frequency transient measurement

4 (24-bit)

Input voltage (resolution)

5 (24-bit)

Input current (resolution)

Binary input

8 GB (32)

Memory size (optional)

S1

WLAN

3,5 h

Operating time via battery

WinPQ mobile
High-quality analysis software

WinPQ mobil was designed to support the user in evaluating the data. The clear presentation of the measured values was the main focus. Thus, the software not only advances the PQ-Box, but also the user.

News From the Product Group

PQMobil - News

Blogpost

Power Quality Analyzer Guide: Your Entry Point for 2026

29. January 2026

Comprehensive 2026 guide to power quality analysers: selection criteria, applications, standards, and future trends for reliable power quality monitoring.[...]

Read more

Blogpost

Short video presentation »PQ-Box ONE«

15. January 2026

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.[...]

Read more

Blogpost

»PQ-Box 150« and »PQ-Box ONE«

15. January 2026

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.[...]

Read more

Webinar

»Cyber Security« Webinar: A Challenge for European Energy Companies

3. December 2025

Webinar recording from 2025-11-26: »Cyber Security« - A Challenge for European Energy Companies[...]

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Blogpost

A. Eberle at the Schwabach City Run 2025

24. November 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[...]

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Training Video

»PQMobil« Training Video 8: Setting up remote access for the PQ-Box

21. November 2025

This video shows how to configure a PQ-Box remotely via Wi-Fi, LAN, network, and the Internet using a VPN tunnel, view live data, and transfer measurement data. Enjoy the video.[...]

Read more

General Knowledge

Total Harmonic Distortion (THD) in Low Voltage Networks

20. November 2025

This study examines harmonic distortion in modern low-voltage grids, showing real measurement data, key standards (EN 50160, IEC 61000-3-2/-4-30) and practical ways to reduce THD in applications such as[...]

Read more

Special Publication

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

12. November 2025

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

Read more

Special Publication

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

5. November 2025

Read more

General Knowledge

Voltage Measurement Can Improve the Quality of Supply

7. August 2025

Read more

General Knowledge

Power in Multiphase Systems

7. August 2025

This technical report highlights the special features of power transmission in three-phase systems and offers valuable insights into the optimisation and analysis of modern power grids.[...]

Read more

Webinar

»PQMobil« Webinar: New Features/Functions for Your PQ-Box/es: Presentation of WinPQ mobil V8 & V7 legacy

5. August 2025

Webinar recording from 2025-07-29: »PQMobil - New Features/Functions for Your PQ-Box/es: Presentation of WinPQ mobil V8 & V7 legacy«. [...]

Read more

Blogpost

Visit From the Rudolf Diesel Technical School at A. Eberle

15. July 2025

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[...]

Read more

Blogpost

TOP 100 Awards 2025: Innovation for the Energy Future

15. July 2025

💡 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.[...]

Read more

Blogpost

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

14. July 2025

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)[...]

Read more

Blogpost

Further Growth at A. Eberle

14. July 2025

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

Read more

Blogpost

Specialist Training on Power Quality

18. June 2025

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).[...]

Read more

Webinar

»PQMobil« Webinar: Power Quality Analysis in Public & Industrial Power Grids – Part 3

29. April 2025

Webinar recording from 2025-04-02: »PQMobil - Power Quality Analysis in Public & Industrial Power Grids – Part 3«. [...]

Read more

Training Video

»PQMobil« Training Video 7: Measurement Data

15. April 2025

This video is all about the measurement data. What data does the PQ-Box record and what is the best way to configure it beforehand? [...]

Read more

General Knowledge

Measuring the Voltage Drop

23. January 2025

The voltage drop is the difference between the voltage at the beginning and end of an electrical line. In an electrical network, the voltage can be reduced by the resistance and impedance of the lines,[...]

Read more

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