Danfoss VLT AutomationDrive EZ FC 321 Installation Manual page 27

VLT®AutomationDrive EZ FC 321
Installation Guide
Enclosure Power [hp] Recommended fuse
size
60 gG-100
60 aR-160
C2 100 aR-200
C3 50 gG-63
60 gG-100
C4 75 aR-160
100 aR-200
Table 16: 525–690 V, Enclosure Size D
Enclosure Power [hp]
D1h/D3h 125
150
200
4.11.3 UL Compliance
Fuse classification for UL Compliance
UL COMPLIANCE
To comply with NEC 2017, it is mandatory to use fuses or circuit breakers. Danfoss recommends using a selection of the fuses
listed in the following tables. These fuses are suitable for use on a circuit capable of delivering 100000 A
500 V, or 600 V depending on the drive voltage rating. With the proper fusing, the drive short-circuit current rating (SCCR) is
100000 A .
rms
For semiconductor fuse types, the drive controller and the overcurrent protection device must be integrated within the same over-
all assembly.
Table 17: UL Fuse Classification Chart
UL class Fuse overload characteristics
RK1 Ultra fast-acting, current limiting/time de-
lay
T Fast-acting
J Fast-acting
CC Fast-acting
26 | Danfoss A/S © 2021.05
Recommended max-
imum fuse
aR-250
aR-250
gG-150
gG-150
aR-250
Recommended fuse size
aR-315
aR-315
aR-315
N O T I C E
Interrupting rating
[A]
200.000
200.000
200.000
200.000
Recommended circuit breaker
Eaton/Moeller
NZMB2-A250
NZMB2-A200
NZMB2-A200
NZMB2-A250
Recommended maximum fuse
aR-315
aR-315
aR-315
AC voltage rating
[V]
250
600
300
600
600
600
AN354546796134en-000201 / 130R0954
Electrical Installation
Maximum trip lev-
el [A]
250
150
250
(symmetrical), 240 V,
rms
Available ampere rat-
ing
1–600
1–1.200
1–600
5–30