AuCom EMX4i - 3.12 IEC Coordination with Short Circuit Protection Devices

SYSTEM DESIGN
710-14888-00C EMX4i User Manual 17
CAUTION
DC Brake: A high brake torque setting can result in peak currents up to
motor DOL being drawn while the motor is stopping. Ensure protection
fuses installed in the motor branch circuit are selected appropriately.
CAUTION
Integral solid state short circuit protection does not provide branch circuit
protection. Branch circuit protection must be provided in accordance with
the National Electrical Code and any additional local codes.
3.12 IEC Coordination with Short Circuit Protection Devices
These fuses were selected based on start current of 300% FLC for 10 seconds.
Nominal Rating
(A)
SCR I
2
t (A
2
s)
Type 1
coordination
480 VAC, 65 kA
Bussmann NH
fuse links
Type 2
coordination
690 VAC, 65 kA
Bussmann
DIN 43 653
EMX4i-0024B 24 1150 40NHG000B 170M3010
EMX4i-0042B
42
7200
63NHG000B
170M3013
EMX4i-0052B
52
80NHG000B
EMX4i-0064B 64 15000 100NHG000B 170M3014
EMX4i-0069B 69
EMX4i-0105B 105 80000 170M3015
EMX4i-0115B 115 160NHG00B
EMX4i-0135B 135 125000 170M3016
EMX4i-0184B
184
250NHG2B
EMX4i-0200B
200
320000
170M3020
EMX4i-0229B 229 315NHG2B
EMX4i-0250B 250 170M3021
EMX4i-0352B 352 202000 355NHG2B 170M6009
EMX4i-0397B 397 400NHG2B
EMX4i-0410B 410 320000 425NHG2B 170M6010
EMX4i-0550B
550
781000
630NHG3B
170M6012
EMX4i-0580B
580