Our systems achieve the highest accuracy and are suitable for testing all types of meters.
Our solutions for testing AC and DC charging stations are compact and easy to use.
We offer stationary and mobile solutions for testing instrument transformers & switchgears, optimized for your needs.
From calibrations to software upgrades and training, we offer a wide range of services remotely and on-site.
ZERA – Your specialist for measurement technology
ZERA develops and manufactures systems for the generation, measurement, testing and calibration of electrical quantities and distributes them worldwide. Our customers include renowned companies in the field of electricity supply and instrument transformer manufacturing. ZERA is an independent and employee-owned company.
Close customer relations and long-term, partnership-oriented thinking characterize our actions.
Precision starts with us.
Know-How & Quality
We are your specialist for measurement technology with more than 100 years of experience. Our innovative products set standards.
Neutral & comprehensive
We offer a comprehensive product portfolio – unique in our industry. Independent, autonomous and sustainable.
Long term & binding
Our sales engineers provide competent advice, as do our partners in over 70 countries.
Comprehensive & flexible
Our quality promise includes systems, consulting and service. These can be combined.
Shortly before our 100th anniversary, we left our production and administration facilities in the center of Königswinter and moved into a state-of-the-art, spacious office and production building in Königswinter-Oberpleis. The future begins now.