Fuses And Circuit Breakers - Danfoss FC 301 Operating Manual

Specifications

8.7 Fuses and Circuit Breakers

Use recommended fuses and/or circuit breakers on the supply side as protection if there is component break-down inside
the frequency converter (first fault).
NOTICE
Use of fuses on the supply side is mandatory for IEC 60364 (CE) and NEC 2009 (UL) compliant installations.
Recommendations
•
gG type fuses.
•
Moeller type circuit breakers. For other circuit breaker types, ensure that the energy into the frequency converter is
equal to or lower than the energy provided by Moeller types.
Use of recommended fuses and circuit breakers ensures that possible damage to the frequency converter is limited to
damage inside the unit. For further information, see Application Note Fuses and Circuit Breakers.
The fuses in chapter 8.7.1 CE Compliance to chapter 8.7.2 UL Compliance are suitable for use on a circuit capable of delivering
100000 A (symmetrical), depending on the frequency converter voltage rating. With the proper fusing, the frequency
rms
converter short-circuit current rating (SCCR) is 100000 A
8 8
8.7.1 CE Compliance
200–240 V
Enclosure
A1 0.25–1.5 (0.34–2.0)
A2 0.25–1.5 (0.34–2.0)
A3
A4 0.25–1.5 (0.34–2.0)
A5 0.25–1.5 (0.34–2.0)
B1
B2
B3
B4
C1
C2
C3
C4
Table 8.13 200–240 V, Enclosure Sizes A, B, and C
48
Power [kW (hp)] Recommended
fuse size
gG-10
gG-10
2.2 (3.0) gG-16
3.0 (4.0) gG-16
3.7 (5.0) gG-20
gG-10
2.2 (3.0) gG-16
gG-10
2.2–3.0 (3.0–4.0) gG-16
3.7 (5.0) gG-20
5.5 (7.5) gG-25
7.5 (10.0) gG-32
11.0 (15.0) gG-50
5.5 (7.5) gG-25
7.5 (10.0) gG-32
11.0 (15.0) gG-50
15.0 (20.0) gG-63
15.0 (20.0) gG-63
18.5 (25.0) gG-80
22.0 (30.0) gG-100
30.0 (40.0) aR-160
37.0 (50.0) aR-200
18.5 (25.0) gG-80
22.0 (30.0) aR-125
30.0 (40.0) aR-160
37.0 (50.0) aR-200
Danfoss A/S © 05/2018 All rights reserved.
®
VLT AutomationDrive FC 301/302
.
rms
Recommended
maximum fuse
gG-25
gG-25
gG-32
gG-32
gG-32
gG-80
gG-100
gG-63
gG-125
gG-160
aR-160
aR-200
aR-250
gG-150
aR-160
aR-200
aR-250
Recommended circuit Maximum trip level
breaker
Moeller
PKZM0-16
PKZM0-25
PKZM0-25
PKZM0-25
PKZM0-25
PKZM4-63
NZMB1-A100
PKZM4-50
NZMB1-A100
NZMB2-A200
NZMB2-A250
NZMB2-A200
NZMB2-A250
[A]
16
25
25
25
25
63
100
50
100
160
250
150
250
MG33AT02