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All-in-One Solution: Power Quality Analyzer, Measurement Device, and Fault Recorder
The mobile PQ-Box® family consists of portable, IP65-rated instruments designed to operate reliably across a wide temperature range. Combining the functionality of a Power Quality Analyser, Power Meter, Oscilloscope, and Transient Recorder in a single compact device, the PQ-Box® range delivers comprehensive power system monitoring and analysis. Designed for intuitive operation and dependable Power Quality assessment, these high-precision Class A instruments comply with IEC 61000-4-30 Edition 4 and are fully aligned with NRS048-2:2025, South Africa’s Power Quality standard, as well as EN50160 and IEC 61000-2-2/-2-4.
The PQ-Box ONE is a compact and portable Class A Power Quality Analyser designed for fast and accurate Power Quality measurements directly from standard power sockets. Ideal for energy audits, fault detection, disturbance investigations, and Power Quality assessments in industrial, utility, and building services environments, it provides real-time monitoring of voltage, current, harmonics, flicker, and power disturbances.
The device complies with EN 50160, IEC 61000-2-2, IEC 61000-2-4, and the latest NRS048-2:2025 Power Quality standards for South Africa. With built-in Wi-Fi, USB-C connectivity, and 1 GB data memory, the PQ-Box ONE delivers reliable insights for utilities, industrial facilities, and electrical service teams.
Product Enquiry Technical Data Sheet

The perfect tool for energy management audits to ISO 50001. Our universal Class A Power Quality network analyzer, PQ-Box 50, has been developed for wide-ranging use and comes with an integrated power unit and robust housing, all in a small space. This network analyzer is for universal deployment and is ideal for mobile measurements in harsh environments or where space is highly limited.
Product Enquiry Technical Data SheetThe PQ-Box 150 mobile network analyzer, power meter and transient recorder was designed to quickly locate the source of network disturbances. The class A device was developed for measurements in low, medium and high voltage networks and is ideally designed for mobile measurement operation in harsh environments and in very confined spaces. Thus, the device impresses as a mobile all-rounder of our product group and its wide field of application, which also provides standard reports according to the specifications of EN 50160, IEC 61000-2-2/-2-4 for public and industrial networks.
Product Enquiry Technical Data Sheet

The PQ-Box 200 mobile Power Quality network analyzer, power meter and transient recorder has been fitted with a wide range of triggering capabilities in order to rapidly locate the causes of network faults. The Class A device has been developed for measurements on low, medium and high-voltage networks and is ideally designed for measurements in harsh environments or where space is very limited. In addition, the device allows the Power Quality of public and industrial networks to be assessed. This means the device offers everything Power Quality experts need.
Product Enquiry Technical Data SheetThis mobile Power Quality network analyzer, power meter and transient recorder allows permanent DC frequency analysis to 170 kHz. The Class A device has been developed for measurements on low, medium and high-voltage networks and is ideally designed for measurements in harsh environments or where space is very limited. In addition, the device allows the Power Quality of public and industrial networks to be assessed. The device is thus an essential aid for analysis in high-frequency ranges.
Product Enquiry Technical Data Sheet
A. Eberle Africa's distributor in Southern Africa - Magnet Electrical Supplies (Pty) Ltd - provides professional services in Power Quality -topics, tailored to your specific requirements. Magnet's team, of experts, in cooperation with our experts, have extensive experience in industry, and along with their problem-centric approach to every application, they are able to efficiently uncover the causes of PQ-problems in industrial plants and in electrical power grids.
Product EnquiryTemporary measurements at customer or network connection points to assess voltage and current quality.
Recording transients, harmonics, and flicker during grid disturbances or equipment malfunctions.
Verifying power system performance during setup or after network upgrades.
Identifying causes of equipment downtime or inefficiency due to poor Power Quality .
Monitoring grid compliance and harmonics from solar, wind, or hybrid generation systems.
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