UL Compliance
Fuses or circuit breakers are mandatory to comply with NEC 2009. Danfoss recommends using a selection of the following
The fuses below are suitable for use on a circuit capable of delivering 100,000 Arms (symmetrical), 240 V, or 480 V, or 500 V,
or 600 V depending on the frequency converter voltage rating. With the proper fusing the frequency converter Short Circuit
Current Rating (SCCR) is 100,000 Arms.
Recommended max. fuse
Power
[kW]
Bussmann
Type RK1
1)
Bussmann
Type J
Bussmann
Type T
Bussmann
Type CC
Bussmann
Type CC
Bussmann
Type CC
1.1 KTN-R-10 JKS-10 JJN-10 FNQ-R-10 KTK-R-10 LP-CC-10
1.5 KTN-R-15 JKS-15 JJN-15 FNQ-R-15 KTK-R-15 LP-CC-15
2.2 KTN-R-20 JKS-20 JJN-20 FNQ-R-20 KTK-R-20 LP-CC-20
3.0 KTN-R-25 JKS-25 JJN-25 FNQ-R-25 KTK-R-25 LP-CC-25
3.7 KTN-R-30 JKS-30 JJN-30 FNQ-R-30 KTK-R-30 LP-CC-30
5.5-7.5 KTN-R-50 KS-50 JJN-50 - - -
11 KTN-R-60 JKS-60 JJN-60 - - -
15 KTN-R-80 JKS-80 JJN-80 - - -
18.5-22 KTN-R-125 JKS-125 JJN-125 - - -
30 KTN-R-150 JKS-150 JJN-150 - - -
37 KTN-R-200 JKS-200 JJN-200 - - -
45 KTN-R-250 JKS-250 JJN-250 - - -
Table 6.23 200-240 V, Enclosure Types A, B and C
Recommended max. fuse
Power
[kW]
SIBA
Type RK1
Littel fuse
Type RK1
Ferraz-
Shawmut
Type CC
Ferraz-
Shawmut
Type RK1
3)
1.1 5017906-010 KLN-R-10 ATM-R-10 A2K-10-R
1.5 5017906-016 KLN-R-15 ATM-R-15 A2K-15-R
2.2 5017906-020 KLN-R-20 ATM-R-20 A2K-20-R
3.0 5017906-025 KLN-R-25 ATM-R-25 A2K-25-R
3.7 5012406-032 KLN-R-30 ATM-R-30 A2K-30-R
5.5-7.5 5014006-050 KLN-R-50 - A2K-50-R
11 5014006-063 KLN-R-60 - A2K-60-R
15 5014006-080 KLN-R-80 - A2K-80-R
18.5-22 2028220-125 KLN-R-125 - A2K-125-R
30 2028220-150 KLN-R-150 - A2K-150-R
37 2028220-200 KLN-R-200 - A2K-200-R
45 2028220-250 KLN-R-250 - A2K-250-R
Table 6.24 200-240 V, Enclosure Types A, B and C
Electrical Installation Design Guide
MG11BC02 Danfoss A/S © Rev. 06/2014 All rights reserved. 99
6 6
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