Ul Coordination With Short-Circuit Protection Devices; Standard Fault Short Circuit; Models Mcd6-0020B~Mcd6-0579B - Danfoss VLT MCD 600 Operating Manual

VLT® Soft Starter MCD 600
Operating Guide
Table 17: Models MCD6-0160C~MCD6-1134C, Continuous Connection
Nominal rating (A)
MCD6-0654B 190
MCD6-0736B 260
MCD6-0950B 350
MCD6-1154B 475
MCD6-1250B 565
MCD6-0590C 735
MCD6-0667C 830
MCD6-0839C 1025
MCD6-0979C 1170
MCD6-1134C 1220

3.15 UL Coordination with Short-circuit Protection Devices

3.15.1 Standard Fault Short Circuit

3.15.1.1 Models MCD6-0020B~MCD6-0579B

Suitable for use on a circuit capable of delivering not more than the stated level of amperes (symmetrical rms), 600 V AC maximum.
These nominal ratings are based on a start current of 300% FLC for 10 s.
Table 18: Maximum Fuse Rating [A] - Standard Fault Short-Circuit Current
Model
MCD6-0020B
MCD6-0034B
MCD6-0042B
MCD6-0063B
MCD6-0069B
MCD6-0086B
MCD6-0108B
MCD6-0129B
MCD6-0144B
MCD6-0171B
MCD6-0194B
MCD6-0244B
MCD6-0287B
MCD6-0323B
Danfoss A/S © 2020.12
2 2
SCR I t (A s) Type 1 coordination 500 V AC, 100
kA
250NHG2B
320000
315NHG2B
202000 355NHG2B
320000 425NHG2B
781000 630NHG3B
1000NHG4G
2530000
1200NHG4G
3920000 OFAA5GG1250
7220000
Nominal rating [A]
24
42
52
64
69
105
120
135
184
225
229
250
352
397
3 cycle short cct rating @600 V AC
5 kA
10 kA
18 kA
AQ262141844215en-000401 / 175R1174 | 25
System Design
Type 2 coordination 690 V AC, 100
kA
170M3020
170M3021
170M6009
170M6010
170M6011
170M6016
170M6017
Not available
170M6019
(1)