Danfoss VLT AutomationDrive EZ FC 321 Installation Manual page 24

VLT®AutomationDrive EZ FC 321
Installation Guide
Illustration 11: Connecting to AC Mains
4.11 Fuses and Circuit Breakers
4.11.1 Fuse Recommendations
Fuses ensure that possible damage to the drive is limited to damages inside the unit. Danfoss recommends fuses and/or circuit
breakers on the supply side as protection. For further information, see the application guide Fuses and Circuit Breakers.
Use of fuses on the supply side is mandatory for IEC 60364 (CE) and NEC 2009 (UL) compliant installations.
Recommendations
• gG type fuses.
• Eaton/Moeller type circuit breakers. For other circuit breaker types, ensure that the energy into the drive is equal to or lower
than the energy provided by Eaton/Moeller types.
For further information, see the application guide Fuses and Circuit Breakers.
The recommended CE and UL compliant fuses are suitable for use on a circuit capable of 100000 A
the drive voltage rating. With the proper fusing, the drive short circuit current rating (SCCR) is 100000 A
4.11.2 CE Compliance
Table 13: 200–240 V, Enclosure Sizes A, B, C, and D
Enclosure Power [hp] Recommended fuse
size
A2 0.34–2.0 gG-10
3.0 gG-16
A3 4.0 gG-16
5.0 gG-20
A5 0.34–2.0 gG-10
3.0–4.0 gG-16
5.0 gG-20
B1 7.5 gG-25
Danfoss A/S © 2021.05
N O T I C E
Recommended max- Recommended circuit breaker
imum fuse Eaton/Moeller
gG-25 PKZM0-25
gG-32 PKZM0-25
gG-32 PKZM0-25
gG-80 PKZM4-63
Electrical Installation
(symmetrical), depending on
rms
.
rms
Maximum trip lev-
el [A]
25
25
25
63
AN354546796134en-000201 / 130R0954 | 23