About METREL
Metrel was established in 1957 as a manufacturer of electrical measuring instruments and has grown into one of the world’s leading companies in testing and measurement technology.
What sets Metrel apart is its complete in-house development and manufacturing process—from initial design to final assembly, calibration, and quality control—all carried out at a single location. This ensures unmatched consistency, precision, and reliability across every product.
With a strong focus on customer needs, Metrel continuously innovates by integrating real-world feedback into product development. Their solutions are tailored for global markets, with support for local standards and multiple languages, making them highly adaptable across industries.
Today, Metrel products are trusted in over 70+ countries across six continents, known for being advanced, rugged, accurate, and dependable—ideal for professionals who demand performance and safety.
METREL Products We Offer
At Volterrat, we bring you genuine Metrel solutions backed by expert support and industry knowledge. From product selection to after-sales assistance, we ensure you get the right tools for your application.

Multifunctional Electrical Installation Testers
Metrel multifunction testers provide a complete solution for electrical installation safety testing in residential, commercial, and industrial environments by combining multiple test capabilities in one device.
Typical Applications :
– Electrical installation commissioning
– Industrial power distribution testing
– Maintenance and safety inspections
– Renewable energy system verification

Earth Testers & Ground Resistance Measurement
Reliable grounding systems are critical for electrical safety and lightning protection. Metrel earth testers are designed to measure ground resistance accurately in a wide range of environments.
Typical Applications :
– Earthing system verification
– Lightning protection system testing
– Substation grounding inspections
– Industrial electrical safety checks

Photovoltaic & Electrical Installation Testers
With the growth of solar energy systems, testing photovoltaic installations has become essential for safety and efficiency.
Metrel photovoltaic testers provide dedicated tools for evaluating the performance and safety of solar installations.
Typical Applications :
– Solar plant commissioning
– PV system diagnostics
– Performance verification of solar panels
– Maintenance of renewable energy systems

High Voltage Insulation Testers
High-voltage insulation testers from Metrel are designed for testing insulation quality in high-voltage electrical systems and equipment.
Typical Applications :
– Transformer insulation testing
– High-voltage cable diagnostics
– Industrial electrical equipment testing
– Preventive maintenance programs
Why we partner with METREL
– European Engineering Excellence — All instruments are developed and manufactured in Europe with strict quality control, ensuring reliable performance in demanding environments.
– Advanced Testing Technology — Metrel instruments combine modern electronics with advanced measurement algorithms to deliver precise diagnostic capabilities.
– Built for Field Professionals — Designed for electricians, engineers, and inspectors who need rugged, dependable instruments for everyday testing.
– Global Standards Compliance — Products are developed in accordance with international electrical safety standards such as IEC/EN testing regulations.
– Comprehensive Testing Solutions — Metrel offers a broad range of instruments covering electrical installations, renewable energy systems, grounding systems, and high-voltage applications.
Inquiry Form
Tell us about your METREL requirements and an expert from our team will be in touch with you with additional details about our products!