SCCR combination vs. individual

[cesrw]

How does a tested combination of devices acheive a higher SCCR than the components individually?

 

[ron]

Here's a good description
http://ecatalog.squared.com/pubs/Circuit Protection/Molded Case Circuit Breakers/0600DB0108.pdf

 

[Fast__Eddie]

Try this link to Bussman, excellent information!

http://www.bussmann.com/pdf/6467127a-fe91-48fc-8dc8-8d7df6da9316.pdf