Thank you for viewing. This listing is for a Mitsubishi overcurrent relay moc-a3v-r. ※ Tested and in good condition. I purchased this to study relay testing using my own relay tester, but I am selling it now that I have finished practicing. It has only been used a few times and is in very good condition and has been tested. Please see the photos for the condition. ※ Confirmed operation includes time-delay operation and instantaneous operation. ※ Please note that there is no box. We look forward to your purchase if you understand the above. Thank you.