The EMX3 manual states that HRC fuses are required for type 1 coordination to 50kA
Is this really necessary?
What is the short circuit rating of the starter itself, without any protection? Our prospective fault rating is 20kA, and there will be an MCCB upstream of the drive which will limit the fault current to 7kA. Surely the starter can withstand this without exploding and potentially harming the MCC or persons in the vicinity?
The manual doesn't really give much more than the minimum required information.