Manta’s test systems have been designed and manufactured by Relay Technicians for practical purposes, not by engineers for theoretical purposes.


Manta provides a range of services to support your test equipment, including training, calibration and repairs.


Manta technical support can always be reached by phone or email, or one of our many technical articles or videos may also answer your questions.

the-relay-testing-handbook-thumbnailOrder The Relay Testing Handbook

This 650+ page hardcover book is an indispensable resource that every relay tester should keep at their fingertips. This book was written for relay testers, rather than design engineers, so you no longer have to decipher engineering textbooks when performing relay tests.



Upcoming Events


Our March Madness promotion is underway!   A contest for all Manta customers who are relay techs, protection engineers and managers.

Prizes will be awarded at the end of this exciting event!


February 9thth
Join us February 9thth  for a hands-on workshop to learn techniques that will help you get more out of your Manta.

July 25th
Join us August 25th for an exclusive Manta Webinar.

July 18th
Join us for another Manta Workshop!

> All News