Danfoss VLT Micro Drive Quick Manual page 9

Quick Guide
1 1
1.3.4 Fuses
Branch circuit protection:
In order to protect the installation against electrical and
fire hazards, 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 the DC link. The adjustable frequency drive
provides full short circuit protection in case of a short-
circuit on the motor or brake output.
Overcurrent protection:
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 1.6 Fuses
1-6
VLT
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
MG02B722 - VLT
®
Micro Drive Quick Guide
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 100,000 A
480V maximum.
Non UL compliance:
If UL/cUL is not to be complied with, Danfoss recommends
using the fuses mentioned in the table below, 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 adjustable frequency
drive.
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
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
(symmetrical),
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