How long does the starting current flow for ? rather than the normal C type, consider D type or even K curve may be more suited

https://info.e-t-a.com/ES-2017-02-IndustrialAutomation-DCurve_LP-Destination.html

Mike.

Mike, we are feeding it through a TMD MCCB, not an MCB so I cannot select the curves

I am trying to find in the pdf something relevant to the starting duration however there is nothing. Only the starting current.

I dont think it would last more than 5-10 sec though

Thats all I have

If you have Amtech plot the curves for your chosen MCCB and see how it behaves with your staring current.

JP

OK so lets assume 150A for 5 seconds. If we consider Schneider, but if you say your preferred we can use that, then their larger TM_D units allow the thermal and magnetic parts to be set independently

Though their  smaller sizes have the magnetic part set permanently at about ten times the thermal, which is then the single adjustable.

something like a 25 a unit wound down to 16 or so perhaps?

What is the motor doing? 

Is star delta an option, or a variable speed drive?

The MCCB can be adjusted to suit the thermal capacity of the cable and let the starter look after the overload.

My preferred choice of micro logic 2.2 is for distribution circuits, as it offers adjustable thermal and magnetic protection. I have also utilized the earth leakage variant when needed and the power meter option when appropriate. Also would suggest using ElectricalOM, It offers various features such as schematic diagrams, discrimination analysis, arc flash study, and CAD plan drawings