Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1 Fuses and Circuit Breakers
1.1.1 Fuses
A frequency converter that works correctly limits the current
it can draw from the supply. Still, it is recommended to use
fuses and/ or Circuit Breakers on the supply side as
protection in case of component break-down inside the
frequency converter (first fault).
NOTE
This is mandatory in order to ensure compliance with IEC
60364 for CE or NEC 2009 for UL.
WARNING
Personnel and property must be protected against the
consequence of component break-down internally in the
frequency converter.
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 protected against short-circuit and
over-current according to national/international regulations.
NOTE
The recommendations given do not cover Branch circuit
protection for UL!
1.1.2 Energy Required to Clearing the Circuit
It is important to choose a fuse/Circuit Breaker with a low I2t
2
s]. This parameter is the energy required to clearing and is
[A
a measure of the damaging effect on the frequency
converter.
Fuses offer better protection of the frequency converter than
Circuit Breakers as I
2
I
t
<< I2t
aR fuse
value
The fastest clearing is done with an aR fuse (partial range
accompanied protection for semiconductors) that is faster than
a gG fuse (wide-range general-purpose protection for cables,
conductors and wires). Circuit Breakers are slower.
2
t is smaller for fuses.
<< I2t
gG fuse
circuit breaker
for the same nominal
1.1.3 Safely Breaking the Current
Fuses and Circuit Breakers must be capable of safely
breaking the current in the event of a short circuit. When a
large electric current is interrupted an arc may form and if
the breaking capacity of a fuse or circuit breaker is exceeded
then it may not be able to extinguish this arc and the current
will continue, which might have severe consequences.
1 1
Short-circuit protection:
Danfoss recommends using the fuses/Circuit Breakers listed
in 1.1.6 CE Compliance and 1.1.7 UL Compliance to protect
service personnel and property in case of component breakdown in the frequency converter.
Over current protection:
The frequency converter provides overload protection to
limit threats to human life, property damage and to avoid
fire hazard due to overheating of the cables in the installation. The frequency converter is equipped with an internal
over current protection (4-18 Current Limit) that can be used
for upstream overload protection (UL-applications excluded).
Moreover, fuses or Circuit Breakers can be used to provide
the over current protection in the installation. Over current
protection must always be carried out according to national
regulations.
This breaking capacity is known as the Short Circuit Current
Rating (SCCR).
The prospective short circuit current (PSCC) is the highest
electric current which can exist in a particular electrical
system under short circuit- and ground fault conditions and
is determined by the voltage and impedance of the supply
system.
With gG fuses, the SCCR is 100 kA rms (symmetrical) which
means that it will be possible to disconnect a PSCC of up to
100 kA rms (symmetrical). The recommended aR fuses and
Circuit Breakers have a lower SCCR which means that they
will not be able to disconnect a PSCC of that magnitude. The
data sheets must be consulted for details.
NOTE
In general, be aware that your fuse/Circuit Breaker must be
capable of handling the PSCC.
MN.90.T1.02 - VLT® is a protected Danfoss trademark 1
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1
1.1.4 Fuses and Circuit Breakers
The selection of fuse and/or Circuit Breaker will depend on
preferences and on the installation in question. Sometimes it
is necessary to combine the two.
Fuses
A nonrenewable fuse interrupts excessive current by
clearing. Fuses are selected to allow passage of normal
current and of excessive current only for short periods. After
clearing, the fuse must be replaced.
gG-fuses offer full protection and can be used alone or as
electrical branch-fuse.
NOTE
aR semi-conductor fuses must never be used as the only
protection. Always combine with gG fuses or a Circuit
Breaker depending on the prospective current.
Alternatively, gRL fuses can be used alone.
Circuit Breakers
A Circuit Breaker is an automatically-operated electrical
switch that is designed for overload protection. It can be
used to interrupt excessive current by disconnecting but it is
slower than a nonrenewable fuse. Unlike a fuse, which
operates once and then has to be replaced, a circuit breaker
can be reset (either manually or automatically) to resume
normal operation. When a current is interrupted, an arc is
generated. Different techniques are used to extinguish the
arc.
NOTE
Circuit Breakers should generally not be used as the only
protection. There are some Circuit Breakers now, however,
that can do the job. Generally, combine with a gG fuse or a
bigger Circuit Breaker branch-fuse for the desired protection
depending on the prospective current.
Illustration 1.2 Circuit Breakers should Generally not be used as the
Only Protection
Illustration 1.1 gG Fuses offer Full Protection and can be Used
Alone or as Electrical Branch-fuse
2 MN.90.T1.02 - VLT® is a protected Danfoss trademark
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1.1.5 Recommendations
WARNING
In case of malfunction, not following the recommendation
may result in personnel risk and damage to the frequency
converter and other equipment.
The following tables list the recommended rated current.
Recommended fuses are of the type gG for small to medium
power sizes. For larger powers, aR fuses are recommended.
For Circuit Breakers, Moeller types have been tested to have
a recommendation. Other types of circuit breakers may be
used provided they limit the energy into the drive to a level
equal to or lower than the Moeller types.
If fuses/Circuit Breakers according to recommendations are
chosen, possible damages on the frequency converter will
mainly be limited to damages inside the unit.
NOTE
Following the recommendations puts the direct fuses/Circuit
Breaker in place (a, b, c... in figure below). It does NOT make
up for considering combined protection or branch circuit
protection (see x in illustration below).
1 1
NOTE
The dimensions in Table 1.2 are for an ambient temperature
at 20C. At an ambient temperature at 40C, use Recommended
Max. fuse for gR/aR.
MN.90.T1.02 - VLT® is a protected Danfoss trademark 3
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1
1.1.6 CE Compliance
Fuses or Circuit Breakers are mandatory to comply with IEC 60364. Danfoss recommend using a selection of the following.
The fuses below are suitable for use on a circuit capable of delivering 100,000 Arms (symmetrical), 240V, or 480V, or 500V, or
600V depending on the drive voltage rating. With the proper fusing the drive short circuit current rating (SCCR) is 100,000
Arms.
Enclosure FC 300 Power FC 100/200
Power
Size [kW] [kW] Moeller [A]
A1 0.25-1.5 - gG-10 gG-25 PKZM0-16 16
A2 0.25-2.2 0.25-2.2 gG-10 (0.25-1.5)
A3 3.0-3.7 3.0-3.7 gG-16 (3)
B3 5.5 5.5-11 gG-25 gG-63 PKZM4-50 50
B4 7.5-15 15-18 gG-32 (7.5)
C3 18.5-22 22-30 gG-80 (18.5)
C4 30-37 37-45 aR-160 (30)
A4 0.25-2.2 0.25-2.2 gG-10 (0.25-1.5)
A5 0.25-3.7 0.25-3.7 gG-10 (0.25-1.5)
B1 5.5-7.5 5.5-11 gG-25 (5.5)
B2 11 15 gG-50 gG-100 NZMB1-A100 100
C1 15-22 18.5-30 gG-63 (15)
C2 30-37 37-45 aR-160 (30)
Recommended
fuse size
gG-16 (2.2)
gG-20 (3.7)
gG-50 (11)
gG-63 (15)
aR-125 (22)
aR-200 (37)
gG-16 (2.2)
gG-16 (2.2-3)
gG-20 (3.7)
gG-32 (7.5)
gG-80 (18.5)
gG-100 (22)
aR-200 (37)
Recommended
Max. fuse
gG-25 PKZM0-25 25
gG-32 PKZM0-25 25
gG-125 NZMB1-A100 100
gG-150 (18.5)
aR-160 (22)
aR-200 (30)
aR-250 (37)
gG-32 PKZM0-25 25
gG-32 PKZM0-25 25
gG-80 PKZM4-63 63
gG-160 (15-18.5)
aR-160 (22)
aR-200 (30)
aR-250 (37)
Recommended
circuit breaker
NZMB2-A200 150
NZMB2-A250 250
NZMB2-A200 160
NZMB2-A250 250
Max trip level
Table 1.1 200-240V, Frame Sizes A, B, and C
4 MN.90.T1.02 - VLT® is a protected Danfoss trademark
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
Enclosure FC 300 Power FC 100/200
Power
Size [kW] [kW] Moeller [A]
A1 0.37-1.5 - gG-10 gG-25 PKZM0-16 16
A2 0.37-4.0 1.1-4.0 gG-10 (0.37-3)
A3 5.5-7.5 5.5-7.5 gG-16 gG-32 PKZM0-25 25
B3 11-15 11-18 gG-40 gG-63 PKZM4-50 50
B4 18.5-30 22-37 gG-50 (18.5)
C3 37-45 45-55 gG-100 (37)
C4 55-75 75-90 aR-200 (55)
A4 0.37-4 1.1-4.0 gG-10 (0.37-3)
A5 0.37-7.5 1.1-7.5 gG-10 (0.37-3)
B1 11-15 11-18.5 gG-40 gG-80 PKZM4-63 63
B2 18.5-22 22-30 gG-50 (18.5)
C1 30-45 37-55 gG-80 (30)
C2 55-75 75-90 aR-200 (55)
D 90-200 110-250
E 250-400 315-450
F450-800 -
Recommended
fuse size
gG-16 (4)
gG-63 (22)
gG-80 (30)
gG-160 (45)
aR-250 (75)
gG-16 (4)
gG-16 (4-7.5)
gG-63 (22)
gG-100 (37)
gG-160 (45)
aR-250 (75)
gG-300 (90)
gG-350 (110)
gG-400 (132)
gG-500 (160)
gG-630 (200)
aR-700 (250)
aR-900 (315-400)
aR-1600 (450-500)
aR-2000 (560-630)
aR-2500 (710-800)
Recommended
Max. fuse
gG-25 PKZM0-25 25
gG-125 NZMB1-A100 100
gG-150 (37)
gG-160 (45)
aR-250 NZMB2-A250 250
gG-32 PKZM0-25 25
gG-32 PKZM0-25 25
gG-100 NZMB1-A100 100
gG-160 NZMB2-A200 160
aR-250 NZMB2-A250 250
gG-300 (90)
gG-350 (110)
gG-400 (132)
gG-500 (160)
gG-630 (200)
aR-700 (250)
aR-900 (315-400)
aR-1600 (450-500)
aR-2000 (560-630)
aR-2500 (710-800)
Recommended
circuit breaker
NZMB2-A200 150
--
--
--
Max trip level
1 1
Table 1.2 380-500V, Frame Sizes A, B, C, D, E, and F
MN.90.T1.02 - VLT® is a protected Danfoss trademark 5
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1
Enclosure FC 300 Power FC 100/200
Power
Size [kW] [kW] Moeller [A]
A2 0-75-4.0 1.1-4.0 gG-10 gG-25 PKZM0-25 25
A3 5.5-7.5 5.5-7.5 gG-10 (5.5)
B3 11-15 11-18.5 gG-25 (11)
B4 18.5-30 22-37 gG-40 (18.5)
C3 37-45 45-55 gG-63 (37)
C4 55-75 75-90 aR-160 (55)
A5 0.75-7.5 1.1-7.5 gG-10 (0.75-5.5)
B1 11-18 11-18 gG-25 (11)
B2 22-30 22-30 gG-50 (22)
C1 37-55 37-55 gG-63 (37)
C2 75 75-90 aR-200 (75) aR-250 NZMB2-A250 250
Recommended
fuse size
gG-16 (7.5)
gG-32 (15)
gG-50 (22)
gG-63 (30)
gG-100 (45)
aR-200 (75)
gG-16 (7.5)
gG-32 (15)
gG-40 (18.5)
gG-63 (30)
gG-100 (45)
aR-160 (55)
Recommended
Max. fuse
gG-32 PKZM0-25 25
gG-63 PKZM4-50 50
gG-125 NZMB1-A100 100
gG-150 NZMB2-A200 150
aR-250 NZMB2-A250 250
gG-32 PKZM0-25 25
gG-80 PKZM4-63 63
gG-100 NZMB1-A100 100
gG-160 (37-45)
aR-250 (55)
Recommended
circuit breaker
NZMB2-A200 160
Max trip level
Table 1.3 525-600V, Frame Sizes A, B, and C
Enclosure FC 300 Power FC 100/200
Power
Size [kW] [kW] Moeller [A]
B2 11
15
18
22
C2 30
37
45
55
75
D 37-315 -
E 355-560 -
F 630-1200 -
22-30 gG-25 (11)
75-90 gG-63 (30)
Recommended
fuse size
gG-32 (15)
gG-32 (18)
gG-40 (22)
gG-63 (37)
gG-80 (45)
gG-100 (55)
gG-125 (75)
gG-125 (37)
gG-160 (45)
gG-200 (55-75)
aR-250 (90)
aR-315 (110)
aR-350 (132-160)
aR-400 (200)
aR-500 (250)
aR-550 (315)
aR-700 (355-400)
aR-900 (500-560)
aR-1600 (630-900)
aR-2000 (1000)
aR-2500 (1200)
Recommended
Max. fuse
gG-63 - -
gG-80 (30)
gG-100 (37)
gG-125 (45)
gG-160 (55-75)
gG-125 (37)
gG-160 (45)
gG-200 (55-75)
aR-250 (90)
aR-315 (110)
aR-350 (132-160)
aR-400 (200)
aR-500 (250)
aR-550 (315)
aR-700 (355-400)
aR-900 (500-560)
aR-1600 (630-900)
aR-2000 (1000)
aR-2500 (1200)
Recommended
circuit breaker
--
--
--
--
Max trip level
Table 1.4 525-690V, Frame Sizes B, C, D, E, and F
6 MN.90.T1.02 - VLT® is a protected Danfoss trademark
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1.1.7 UL Compliance
Fuses or Circuit Breakers are mandatory to comply with NEC 2009. We recommend using a selection of the following
The fuses below are suitable for use on a circuit capable of delivering 100,000 Arms (symmetrical), 240V, or 480V, or 500V, or
600V depending on the drive voltage rating. With the proper fusing the drive Short Circuit Current Rating (SCCR) is 100,000
Arms.
Recommended max. fuse
FC 300
PowerFC100/200
Power
[kW] [kW]
0.25-0.37 0.25-0.37 KTN-R-05 JKS-05 JJN-05 FNQ-R-5 KTK-R-5 LP-CC-5
0.55-1.1 0.55-1.1 KTN-R-10 JKS-10 JJN-10 FNQ-R-10 KTK-R-10 LP-CC-10
1.5 1.5 KTN-R-15 JKS-15 JJN-15 FNQ-R-15 KTK-R-15 LP-CC-15
2.2 2.2 KTN-R-20 JKS-20 JJN-20 FNQ-R-20 KTK-R-20 LP-CC-20
3.0 3.0 KTN-R-25 JKS-25 JJN-25 FNQ-R-25 KTK-R-25 LP-CC-25
3.7 3.7
5.5 5.5-7.5
7.5 11
11 15
15-18.5 18.5-22
22 30
30 37
37 45
Bussmann Bussmann Bussmann Bussmann Bussmann Bussmann
Type RK1
KTN-R-30 JKS-30 JJN-30 FNQ-R-30 KTK-R-30 LP-CC-30
KTN-R-50 KS-50 JJN-50 - - -
KTN-R-60 JKS-60 JJN-60 - - -
KTN-R-80 JKS-80 JJN-80 - - -
KTN-R-125 JKS-125 JJN-125 - - -
KTN-R-150 JKS-150 JJN-150 - - -
KTN-R-200 JKS-200 JJN-200 - - -
KTN-R-250 JKS-250 JJN-250 - - -
1)
Type J Type T Type CC Type CC Type CC
1 1
Table 1.5 200-240V, Frame Sizes A, B, and C
Recommended max. fuse
FC 300
PowerFC100/200
Power
[kW] [kW] Type RK1 Type RK1 Type CC
0.25-0.37 0.25-0.37 5017906-005 KLN-R-05 ATM-R-05 A2K-05-R
0.55-1.1 0.55-1.1 5017906-010 KLN-R-10 ATM-R-10 A2K-10-R
1.5 1.5 5017906-016 KLN-R-15 ATM-R-15 A2K-15-R
2.2 2.2 5017906-020 KLN-R-20 ATM-R-20 A2K-20-R
3.0 3.0 5017906-025 KLN-R-25 ATM-R-25 A2K-25-R
3.7 3.7
5.5 5.5-7.5
7.5 11
11 15
15-18.5 18.5-22
22 30
30 37
37 45
Table 1.6 200-240V, Frame Sizes A, B, and C
SIBA Littel fuse
5012406-032 KLN-R-30 ATM-R-30 A2K-30-R
5014006-050 KLN-R-50 - A2K-50-R
5014006-063 KLN-R-60 - A2K-60-R
5014006-080 KLN-R-80 - A2K-80-R
2028220-125 KLN-R-125 - A2K-125-R
2028220-150 KLN-R-150 - A2K-150-R
2028220-200 KLN-R-200 - A2K-200-R
2028220-250 KLN-R-250 - A2K-250-R
Ferraz-
Shawmut
Ferraz-
Shawmut
Type RK1
3)
MN.90.T1.02 - VLT® is a protected Danfoss trademark 7
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1
FC 300 FC
100/200
[kW] [kW]
0.25-0.37 0.25-0.37
0.55-1.1 0.55-1.1
1.5 1.5
2.2 2.2
3.0 3.0
3.7 3.7
5.5 5.5-7.5
7.5 11
11 15
15-18.5 18.5-22
22 30
30 37
37 45
Table 1.7 200-240V, Frame Sizes A, B, and C
Bussmann Littel fuse
Type JFHR2
FWX-10 - - HSJ-10
FWX-15 - - HSJ-15
FWX-20 - - HSJ-20
FWX-25 - - HSJ-25
FWX-30 - - HSJ-30
FWX-50 - - HSJ-50
FWX-60 - - HSJ-60
FWX-80 - - HSJ-80
FWX-125 - - HSJ-125
FWX-150 L25S-150 A25X-150 HSJ-150
FWX-200 L25S-200 A25X-200 HSJ-200
FWX-250 L25S-250 A25X-250 HSJ-250
2)
FWX-5 - - HSJ-6
1) KTS-fuses from Bussmann may substitute KTN for 240 V frequency converters.
2) FWH-fuses from Bussmann may substitute FWX for 240 V frequency converters.
3) A6KR fuses from FERRAZ SHAWMUT may substitute A2KR for 240 V frequency converters.
4) A50X fuses from FERRAZ SHAWMUT may substitute A25X for 240 V frequency converters.
Recommended max. fuse
JFHR2
Ferraz-
Shawmut
JFHR2
Ferraz-
Shawmut
4)
J
Recommended max. fuse
FC 300
[kW] [kW] Type RK1 Type J Type T Type CC Type CC Type CC
0.37-1.1 - KTS-R-6 JKS-6 JJS-6 FNQ-R-6 KTK-R-6 LP-CC-6
1.5-2.2 1.1-2.2 KTS-R-10 JKS-10 JJS-10 FNQ-R-10 KTK-R-10 LP-CC-10
3 3 KTS-R-15 JKS-15 JJS-15 FNQ-R-15 KTK-R-15 LP-CC-15
4 4 KTS-R-20 JKS-20 JJS-20 FNQ-R-20 KTK-R-20 LP-CC-20
5.5 5.5 KTS-R-25 JKS-25 JJS-25 FNQ-R-25 KTK-R-25 LP-CC-25
7.5 7.5 KTS-R-30 JKS-30 JJS-30 FNQ-R-30 KTK-R-30 LP-CC-30
11 11 KTS-R-40 JKS-40 JJS-40 - - -
15 15 KTS-R-50 JKS-50 JJS-50 - - -
18 22 KTS-R-60 JKS-60 JJS-60 - - -
22 30 KTS-R-80 JKS-80 JJS-80 - - -
30 37 KTS-R-100 JKS-100 JJS-100 - - -
37 45 KTS-R-125 JKS-125 JJS-125 - - -
45 55 KTS-R-150 JKS-150 JJS-150 - - -
55 75 KTS-R-200 JKS-200 JJS-200 - - -
75 90 KTS-R-250 JKS-250 JJS-250 - - -
Table 1.8 380-500V, Frame Sizes A, B, and C
FC
102/202
Bussmann Bussmann Bussmann Bussmann Bussmann Bussmann
8 MN.90.T1.02 - VLT® is a protected Danfoss trademark
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
Recommended max. fuse
FC 302 FC 102/202 SIBA Littel fuse
[kW] [kW] Type RK1 Type RK1 Type CC Type RK1
0.37-1.1 - 5017906-006 KLS-R-6 ATM-R-6 A6K-6-R
1.5-2.2 1.1-2.2 5017906-010 KLS-R-10 ATM-R-10 A6K-10-R
3 3 5017906-016 KLS-R-15 ATM-R-15 A6K-15-R
4 4 5017906-020 KLS-R-20 ATM-R-20 A6K-20-R
5.5 5.5 5017906-025 KLS-R-25 ATM-R-25 A6K-25-R
7.5 7.5 5012406-032 KLS-R-30 ATM-R-30 A6K-30-R
11 11 5014006-040 KLS-R-40 - A6K-40-R
15 15 5014006-050 KLS-R-50 - A6K-50-R
18 22 5014006-063 KLS-R-60 - A6K-60-R
22 30 2028220-100 KLS-R-80 - A6K-80-R
30 37 2028220-125 KLS-R-100 - A6K-100-R
37 45 2028220-125 KLS-R-125 - A6K-125-R
45 55 2028220-160 KLS-R-150 - A6K-150-R
55 75 2028220-200 KLS-R-200 - A6K-200-R
75 90 2028220-250 KLS-R-250 - A6K-250-R
Table 1.9 380-500V, Frame Sizes A, B, and C
Recommended max. fuse
FC 302 FC 102/202 Bussmann Ferraz- Shawmut Ferraz- Shawmut Littel fuse
[kW] [kW] JFHR2 J
0.37-1.1 - FWH-6 HSJ-6 - -
1.5-2.2 1.1-2.2 FWH-10 HSJ-10 - -
3 3 FWH-15 HSJ-15 - -
4 4 FWH-20 HSJ-20 - -
5.5 5.5 FWH-25 HSJ-25 - -
7.5 7.5 FWH-30 HSJ-30 - -
11 11 FWH-40 HSJ-40 - -
15 15 FWH-50 HSJ-50 - -
18 22 FWH-60 HSJ-60 - -
22 30 FWH-80 HSJ-80 - -
30 37 FWH-100 HSJ-100 - -
37 45 FWH-125 HSJ-125 - -
45 55 FWH-150 HSJ-150 - -
55 75 FWH-200 HSJ-200 A50-P-225 L50-S-225
75 90 FWH-250 HSJ-250 A50-P-250 L50-S-250
Ferraz-
Shawmut
1)
JFHR2
Ferraz-
Shawmut
JFHR2
1 1
Table 1.10 380-500V, frame sizes A, B, and C
1) Ferraz-Shawmut A50QS fuses may substitute for A50P fuses.
MN.90.T1.02 - VLT® is a protected Danfoss trademark 9
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1
Recommended max. fuse
FC 302 FC 102/202 Bussmann Bussmann Bussmann Bussmann Bussmann Bussmann
[kW] [kW] Type RK1 Type J Type T Type CC Type CC Type CC
0.75-1.1 0.75-1.1 KTS-R-5 JKS-5 JJS-6 FNQ-R-5 KTK-R-5 LP-CC-5
1.5-2.2 1.5-2.2 KTS-R-10 JKS-10 JJS-10 FNQ-R-10 KTK-R-10 LP-CC-10
3 3 KTS-R15 JKS-15 JJS-15 FNQ-R-15 KTK-R-15 LP-CC-15
4 4 KTS-R20 JKS-20 JJS-20 FNQ-R-20 KTK-R-20 LP-CC-20
5.5 5.5 KTS-R-25 JKS-25 JJS-25 FNQ-R-25 KTK-R-25 LP-CC-25
7.5 7.5 KTS-R-30 JKS-30 JJS-30 FNQ-R-30 KTK-R-30 LP-CC-30
11 11-15 KTS-R-35 JKS-35 JJS-35 - - -
15 18 KTS-R-45 JKS-45 JJS-45 - - -
18 22 KTS-R-50 JKS-50 JJS-50 - - -
22 30 KTS-R-60 JKS-60 JJS-60 - - -
30 37 KTS-R-80 JKS-80 JJS-80 - - -
37 45 KTS-R-100 JKS-100 JJS-100 - - -
45 55 KTS-R-125 JKS-125 JJS-125 - - -
55 75 KTS-R-150 JKS-150 JJS-150 - - -
75 90 KTS-R-175 JKS-175 JJS-175 - - -
Table 1.11 525-600V, Frame Sizes A, B, and C
Recommended max. fuse
FC 302 FC 102/202 SIBA Littel fuse
[kW] [kW] Type RK1 Type RK1 Type RK1 J
0.75-1.1 0.75-1.1 5017906-005 KLS-R-005 A6K-5-R HSJ-6
1.5-2.2 1.5-2.2 5017906-010 KLS-R-010 A6K-10-R HSJ-10
3 3 5017906-016 KLS-R-015 A6K-15-R HSJ-15
4 4 5017906-020 KLS-R-020 A6K-20-R HSJ-20
5.5 5.5 5017906-025 KLS-R-025 A6K-25-R HSJ-25
7.5 7.5 5017906-030 KLS-R-030 A6K-30-R HSJ-30
11 11-15 5014006-040 KLS-R-035 A6K-35-R HSJ-35
15 18 5014006-050 KLS-R-045 A6K-45-R HSJ-45
18 22 5014006-050 KLS-R-050 A6K-50-R HSJ-50
22 30 5014006-063 KLS-R-060 A6K-60-R HSJ-60
30 37 5014006-080 KLS-R-075 A6K-80-R HSJ-80
37 45 5014006-100 KLS-R-100 A6K-100-R HSJ-100
45 55 2028220-125 KLS-R-125 A6K-125-R HSJ-125
55 75 2028220-150 KLS-R-150 A6K-150-R HSJ-150
75 90 2028220-200 KLS-R-175 A6K-175-R HSJ-175
Ferraz-
Shawmut
Ferraz-
Shawmut
Table 1.12 525-600V, Frame Sizes A, B, and C
1) 170M fuses shown from Bussmann use the -/80 visual indicator. –TN/80 Type T, -/110 or TN/110 Type T indicator
fuses of the same size and amperage may be substituted.
10 MN.90.T1.02 - VLT® is a protected Danfoss trademark
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
Recommended max. fuse
Ferraz-
FC 302
[kW]
11 11-15 30 A KTS-R-30 JKS-30 JKJS-30 5017906-030 KLS-R-030 A6K-30-R HST-30
15-18.5 22 45 A KTS-R-45 JKS-45 JJS-45 5014006-050 KLS-R-045 A6K-45-R HST-45
22 30 60 A KTS-R-60 JKS-60 JJS-60 5014006-063 KLS-R-060 A6K-60-R HST-60
30 37 80 A KTS-R-80 JKS-80 JJS-80 5014006-080 KLS-R-075 A6K-80-R HST-80
37 45 90 A KTS-R-90 JKS-90 JJS-90 5014006-100 KLS-R-090 A6K-90-R HST-90
45 55 100 A KTS-R-100 JKS-100 JJS-100 5014006-100 KLS-R-100 A6K-100-R HST-100
55 75 125 A KTS-R-125 JKS-125 JJS-125 2028220-125 KLS-150 A6K-125-R HST-125
75 90 150 A KTS-R-150 JKS-150 JJS-150 2028220-150 KLS-175 A6K-150-R HST-150
* UL compliance only 525-600 V
Table 1.13 525-690V*, Frame Sizes B and C
FC 100/
200 [kW]
prefuse
Max.
Bussmann
E52273
RK1/JDDZ
Bussmann
E4273
J/JDDZ
Bussmann
E4273
T/JDDZ
SIBA
E180276
RK1/JDDZ
LittelFuse
E81895
RK1/JDDZ
Shawmut
E163267/
E2137
RK1/JDDZ
Ferraz-
Shawmut
E2137
J/HSJ
1 1
MN.90.T1.02 - VLT® is a protected Danfoss trademark 11
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
1
FC 302
Table 1.14 380-480/500V, Frame Size D, Line Fuse
Table 1.15 380-480/500V, Frame Size E, Line Fuse
Recommended
[kW]
Drive External
Fuse
Bussmann PN
90 170M3017 315A, 700V 170M3018 FWH-300 JJS-300 2028220-315 L50-S-300 A50-P-300
110 170M3018 350A, 700V 170M3018 FWH-350 JJS-350 2028220-315 L50-S-350 A50-P-350
132 170M4012 400A, 700V 170M4016 FWH-400 JJS-400 206xx32-400 L50-S-400 A50-P-400
160 170M4014 500A, 700V 170M4016 FWH-500 JJS-500 206xx32-500 L50-S-500 A50-P-500
200 170M4016 630A, 700V 170M4016 FWH-600 JJS-600 206xx32-600 L50-S-600 A50-P-600
FC 302 [kW] Recommended Drive
250 170M4017 700A, 700V 170M4017 20 610 32.700 6.9URD31D08A0700
315 170M6013 900A, 700V 170M6013 22 610 32.900 6.9URD33D08A0900
355 170M6013 900A, 700V 170M6013 22 610 32.900 6.9URD33D08A0900
400 170M6013 900A, 700V 170M6013 22 610 32.900 6.9URD33D08A0900
FC 302 [kW] Recommended Drive
450 170M7081 1600A, 700V 170M7082 20 695 32.1600
500 170M7081 1600A, 700V 170M7082 20 695 32.1600
560 170M7082 2000A, 700V 170M7082 20 695 32.2000
630 170M7082 2000A, 700V 170M7082 20 695 32.2000
710 170M7083 2500A, 700V 170M7083 20 695 32.2500
800 170M7083 2500A, 700V 170M7083 20 695 32.2500
Rating Drive Internal
External Fuse
Bussmann PN
External Fuse
Bussmann PN
Alternate
Option
Bussmann PN
Rating Drive Internal
External
Bussmann PN
Rating Drive Internal Option
Alternate
External
Bussmann PN
Option
Bussmann PN
Alternate
External
Siba PN
Alternate External
Siba PN
Bussmann PN
Alternate
External
Littlefuse PN
Alternate External
Ferraz-Shawmut PN
Alternate Siba PN
Alternate
External
Ferraz-
Shawmut PN
Table 1.16 380-480/500V, Frame Size F, Line Fuse
FC 302 [kW] Drive Internal Bussmann PN Rating Alternate Siba PN
450 170M8611 1100A, 1000V 20 781 32.1000
500 170M8611 1100A, 1000V 20 781 32.1000
560 170M6467 1400A, 700V 20 681 32.1400
630 170M6467 1400A, 700V 20 681 32.1400
710 170M8611 1100A, 1000V 20 781 32.1000
800 170M6467 1400A, 700V 20 681 32.1400
Table 1.17 380-480/500V, Frame Size F, Inverter Module DC Link Fuses
12 MN.90.T1.02 - VLT® is a protected Danfoss trademark
Fuses and Circuit Breakers Application Note for FC 100, FC 200 and FC 300 Fuses and Circuit Breakers
FC 302 [kW] Recommended Drive
External Fuse
Bussmann PN
37 170M3013 125A, 700V 170M3015 2061032,125 6.9URD30D08A0125
45 170M3014 160A, 700V 170M3015 2061032,16 6.9URD30D08A0160
55 170M3015 200A, 700V 170M3015 2061032,2 6.9URD30D08A0200
75 170M3015 200A, 700V 170M3015 2061032,2 6.9URD30D08A0200
90 170M3016 250A, 700V 170M3018 2061032,25 6.9URD30D08A0250
110 170M3017 315A, 700V 170M3018 2061032,315 6.9URD30D08A0315
132 170M3018 350A, 700V 170M3018 2061032,35 6.9URD30D08A0350
160 170M4011 350A, 700V 170M5011 2061032,35 6.9URD30D08A0350
200 170M4012 400A, 700V 170M5011 2061032,4 6.9URD30D08A0400
250 170M4014 500A, 700V 170M5011 2061032,5 6.9URD30D08A0500
315 170M5011 550A, 700V 170M5011 2062032,55 6.9URD32D08A0550
Table 1.18 525-690V, Frame Size D, Line Fuse
FC 302 [kW] Recommended Drive
External Fuse
Bussmann PN
355 170M4017 700A, 700V 170M4017 20 610 32.700 6.9URD31D08A0700
400 170M4017 700A, 700V 170M4017 20 610 32.700 6.9URD31D08A0700
500 170M6013 900A, 700V 170M6013 22 610 32.900 6.9URD33D08A0900
560 170M6013 900A, 700V 170M6013 22 610 32.900 6.9URD33D08A0900
Rating Drive Internal
Option
Bussmann PN
Rating Drive Internal
Option
Bussmann PN
Alternate External
Siba PN
Alternate External
Siba PN
Alternate External
Ferraz-Shawmut PN
Alternate External
Ferraz-Shawmut PN
1 1
Table 1.19 525-690V, Frame Size E, Line Fuse
FC 302 [kW] Recommended Drive
External Fuse
Bussmann PN
630 170M7081 1600A, 700V 170M7082 20 695 32.1600
710 170M7081 1600A, 700V 170M7082 20 695 32.1600
800 170M7081 1600A, 700V 170M7082 20 695 32.1600
900 170M7081 1600A, 700V 170M7082 20 695 32.1600
1000 170M7082 2000A, 700V 170M7082 20 695 32.2000
1200 170M7083 2500A, 700V 170M7083 20 695 32.2500
Table 1.20 525-690V, Frame Size F, Line Fuse
FC 302 [kW] Drive Internal Bussmann PN Rating Alternate Siba PN
630 170M8611 1100A, 1000V 20 781 32.1000
710 170M8611 1100A, 1000V 20 781 32.1000
800 170M8611 1100A, 1000V 20 781 32.1000
900 170M8611 1100A, 1000V 20 781 32.1000
1000 170M8611 1100A, 1000V 20 781 32.1000
1200 170M8611 1100A, 1000V 20 781 32.1000
Table 1.21 525-690V, Frame Size F, Inverter Module DC Link Fuses
Rating Drive Internal Option
Bussmann PN
Alternate Siba PN
*170M fuses from Bussmann shown use the -/80 visual indicator, -TN/80 Type T, -/110 or TN/110 Type T indicator fuses of the
same size and amperage may be substituted for external use
**Any minimum 500V UL listed fuse with associated current rating may be used to meet UL requirements.
MN.90.T1.02 - VLT® is a protected Danfoss trademark 13
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