Danfoss VLT Micro Quick Manual page 5

Quick Guide
1 1
1.3.5 Fuses
Branch circuit protection:
In order to protect the installation against electrical and
fire hazard, all branch circuits in an installation, switch
gear, machines etc., must be short-circuited and
overcurrent protected according to national/international
regulations.
Short circuit protection:
Danfoss recommends using the fuses mentioned in the
following tables to protect service personnel or other
equipment in case of an internal failure in the unit or
short-circuit on DC-link. The frequency converter provides
full short circuit protection in case of a short-circuit on the
motor or brake output.
FC 51
Bussmann
1 X 200-240V
kW
0K18 - 0K37
0K75
1K5
2K2
3 x 200-240V
0K25
0K37
0K75
1K5
2K2
3K7
3 x 380-480V
0K37 - 0K75
1K5
2K2
3K0
4K0
5K5
7K5
11K0
15K0
18K5
22K0
Table 1.3 Fuses
4
VLT Micro Drive Quick Guide
Bussmann
Type RK1 Type J
KTN-R15 JKS-15
KTN-R25 JKS-25
KTN-R35 JKS-35
KTN-R50 JKS-50
KTN-R10 JKS-10
KTN-R15 JKS-15
KTN-R20 JKS-20
KTN-R25 JKS-25
KTN-R40 JKS-40
KTN-R40 JKS-40
KTS-R10 JKS-10
KTS-R15 JKS-15
KTS-R20 JKS-20
KTS-R40 JKS-40
KTS-R40 JKS-40
KTS-R40 JKS-40
KTS-R40 JKS-40
KTS-R60 JKS-60
KTS-R60 JKS-60
KTS-R60 JKS-60
KTS-R60 JKS-60
MG.02.B6.02 - VLT
Overcurrent protection:
Provide overload protection to avoid overheating of the
cables in the installation. Overcurrent protection must
always be carried out according to national regulations.
Fuses must be designed for protection in a circuit capable
of supplying a maximum of 100,000A
480V maximum.
Non UL compliance:
If UL/cUL is not to be complied with, Danfoss recommends
using the fuses mentioned in the below table, which will
ensure compliance with EN50178/IEC61800-5-1:
In case of malfunction, not following the fuse recommen-
dation may result in damage to the frequency converter.
Max. Fuses UL
Bussmann Littel fuse
Type T Type RK1
JJN-15 KLN-R15
JJN-25 KLN-R25
JJN-35 KLN-R35
JJN-50 KLN-R50
JJN-10 KLN-R10
JJN-15 KLN-R15
JJN-20 KLN-R20
JJN-25 KLN-R25
JJN-40 KLN-R40
JJN-40 KLN-R40
JJS-10 KLS-R10
JJS-15 KLS-R15
JJS-20 KLS-R20
JJS-40 KLS-R40
JJS-40 KLS-R40
JJS-40 KLS-R40
JJS-40 KLS-R40
JJS-60 KLS-R60
JJS-60 KLS-R60
JJS-60 KLS-R60
JJS-60 KLS-R60
®
is a registered Danfoss trademark
(symmetrical),
rms
Ferraz- Ferraz-
Shawmut Shawmut
Type CC Type RK1
ATM-R15 A2K-15R
ATM-R25 A2K-25R
- A2K-35R
- A2K-50R
ATM-R10 A2K-10R
ATM-R15 A2K-15R
ATM-R20 A2K-20R
ATM-R25 A2K-25R
ATM-R40 A2K-40R
- A2K-40R
ATM-R10 A6K-10R
ATM-R15 A2K-15R
ATM-R20 A6K-20R
ATM-R40 A6K405R
ATM-R40 A6K-40R
- A6K-40R
- A6K-40R
- A6K-60R
- A6K-60R
- A6K-60R
- A6K-60R
Max. fuses non UL
Type gG
16A
25A
35A
50A
10A
16A
20A
25A
40A
40A
10A
16A
20A
40A
40A
40A
40A
63A
63A
80A
80A