Published: 23 February 2011
Category: Q&A
Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This one, concerning contactors and isolators and their duties, is answered by Schneider Electric:
Question: Are there are duties such as AC3, AC4 for contactors, and do isolators switches have similar duties?
Answer: Isolators to IEC 947-3 have Utilisation Categories AC20, AC21, AC22, AC23 and DC20, DC21, DC22 and DC23.
Attached is a data sheet explaining the differences between the categories.
Click below to download the attachment…
To see many more Q & A in Voltimum UK's Experts Area, please click on the link:
www.voltimum.co.uk/consult.php?universe=consult.index.questions