Question

Do you have SCCR (Short Circuit Current Rating) specifications for your power supplies?

Answer

According to UL508A Supplement SB Exception No 1, "Power transformers, reactors, current transformers, dry-type capacitors, resistors, varistors, and voltmeters are not required to have a short circuit current rating."
Power supplies are a type of power transformer and therefore do not require an SCCR rating.

---

FAQ Subcategory: None

This item was last updated on 2023-11-29
Document ID: 1273

---

The information provided in the AutomationDirect knowledge base is provided "as is" without warranty of any kind. AutomationDirect disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall AutomationDirect or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if AutomationDirect or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion of limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.