AuCom EMX4i - 3.14 Fuse Selection for Type 2 Coordination

SYSTEM DESIGN
710-14888-00C EMX4i User Manual 21
3.14 Fuse Selection for Type 2 Coordination
Type 2 coordination is achieved by using semiconductor fuses. These fuses must be
able to carry motor start current and have a total clearing I
2
t less than the I
2
t of the
soft starter SCRs.
When selecting semiconductor fuses for EMX4i, use the I
2
t values in the table.
For further information on selecting semiconductor fuses, contact your local
distributor.
I
2
t values for Type 2 coordination
Model
SCR I
2
t (A
2
s)
EMX4i-0024B 1150
EMX4i-0042B
7200
EMX4i-0052B
EMX4i-0064B
15000
EMX4i-0069B
EMX4i-0105B
80000
EMX4i-0115B
EMX4i-0135B 125000
EMX4i-0184B
320000
EMX4i-0200B
EMX4i-0229B
EMX4i-0250B
EMX4i-0352B
202000
EMX4i-0397B
EMX4i-0410B 320000
EMX4i-0550B
781000
EMX4i-0580B