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]]> By: Tomi https://www.epanorama.net/blog/2010/12/07/relay-contact-life/comment-page-1/#comment-14362 Fri, 17 May 2013 18:11:26 +0000 http://www.epanorama.net/blog/?p=3799#comment-14362 Utilization categories
http://en.wikipedia.org/wiki/Utilization_categories

In electrical engineering utilization categories are defined by IEC standards and indicate the type of electrical load and duty cycle of the loads to ease selection of contactors and relays

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