duty classification of a relay

duty classification of a relay

[′düd·ē ‚klas·ə·fə‚kā·shən əv ə ′rē‚lā]
(electricity)
Expression of the frequency with which the relay may be required to operate without exceeding prescribed limitations.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.