Comparison Between K-Curve and Carling's Delay Curves Circuit Breakers

[antipode]

Can someone advise what the closest delay curve is for a Carling G-series circuit breaker (hydraulic-magnetic) as compared to an industry standard K-curve for a thermal-magnetic breaker?

 

[ron]

From this data sheet, maybe you could point out where the delay curve selection is?

https://www.carlingtech.com/sites/default/files/documents/G-Series_Details_%26_COS_010714.pdf

 

[antipode]

This is the page which shows all of the delay curves, and the G-series is the breaker of concern.

https://www.carlingtech.com/sites/default/files/documents/Carling-HM-CB-Time-Delays.pdf

 

[antipode]

Forgot to mention, it's for an AC voltage.

 

[ron]

It would seem "Long" Curve 26. Typical TCCs for standard breakers have an instantaneous that is ~10x rated current. The short time / delay is not typically the same (Curve 26 is more slurred) as shown, but it is as close as it comes.
This is a typical 60-70A QO breaker https://download.schneider-electric...59.606325885.1691243079-1846500861.1676670757

 

[antipode]

Thanks Ron!