Knopp Inc. is a design and manufacturing company located in Emeryville, California, USA (alongside beautiful San Francisco Bay). We have been in business since 1928 -- if you're counting, that makes 2010 our 82nd year.

Our primary products are transformer test equipment, precision voltage and current transformers, and electrical instruments. Our customers include electric utilities; manufacturers of  transformers and electric motors; government (federal, state, and municipal); and professional electricians.

We hope you will take a moment to browse our products. Please come back often for updates.

!!!ANNOUNCEMENT!!! THE KNOPP K-60 VOLTAGE TESTER IS NOW CAT III APPROVED Knopp Inc is now shipping K-60 Voltage Testers that meet all the requirements of UL 61010-1 CAT III.  In addition, the K-60 Probes satisfy the requirements of UL 61010B-2-031.  The Knopp K-60 is the premier Voltage Tester on the market today.  It is the unquestioned choice among electricians who desire quality tools.  Click here to go directly to a page which compares our K-60 Voltage Tester to the competition.

This site was last updated on March 29, 2010

800-227-1848                                                                         sales@knoppinc.com