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1.3.5 Fuses and Circuit Breakers
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 from short-circuits and overcurrents according to national and local regulations.
Short circuit protection
Danfoss
Overcurrent protection
Provide overload protection to avoid overheating of the cables in the installation. Overcurrent protection must always be
carried out according to local and national regulations. Circuit breakers and fuses must be designed for protection in a
circuit capable of supplying a maximum of 100,000 A
rms
(symmetrical), 480 V maximum.
UL/Non-UL compliance
Use the circuit breakers or fuses listed in
Table 1.17
to ensure compliance with UL or IEC 61800-5-1.
Circuit breakers must be designed for protection in a circuit capable of supplying a maximum of 10,000 Arms (symmetrical),
480 V maximum.
In the event of malfunction, failure to follow the protection recommendation may result in damage to the adjustable
frequency drive.
Circuit Breaker
Fuse
UL
Non-UL
UL
Non-UL
Bussmann
Bussmann
Bussmann
Bussmann
Max fuse
Power [kW]
Type RK5
Type RK1
Type J
Type T
Type G
3x200–240 V IP20
0.25
FRS-R-10
KTN-R10
JKS-10
JJN-10
10
0.37
FRS-R-10
KTN-R10
JKS-10
JJN-10
10
0.75
FRS-R-10
KTN-R10
JKS-10
JJN-10
10
1.5
FRS-R-10
KTN-R10
JKS-10
JJN-10
10
2.2
FRS-R-15
KTN-R15
JKS-15
JJN-15
16
3.7
FRS-R-25
KTN-R25
JKS-25
JJN-25
25
5.5
FRS-R-50
KTN-R50
JKS-50
JJN-50
50
7.5
FRS-R-50
KTN-R50
JKS-50
JJN-50
50
11
FRS-R-80
KTN-R80
JKS-80
JJN-80
65
15
Cutler-Hammer
EGE3100FFG
Moeller NZMB1-
A125
FRS-R-100
KTN-R100
JKS-100
JJN-100
125
18.5
FRS-R-100
KTN-R100
JKS-100
JJN-100
125
22
Cutler-Hammer
JGE3150FFG
Moeller NZMB1-
A160
FRS-R-150
KTN-R150
JKS-150
JJN-150
160
30
FRS-R-150
KTN-R150
JKS-150
JJN-150
160
37
Cutler-Hammer
JGE3200FFG
Moeller NZMB1-
A200
FRS-R-200
KTN-R200
JKS-200
JJN-200
200
45
FRS-R-200
KTN-R200
JKS-200
JJN-200
200
3x380–480 V IP20
0.37
FRS-R-10
KTS-R10
JKS-10
JJS-10
10
0.75
FRS-R-10
KTS-R10
JKS-10
JJS-10
10
1.5
FRS-R-10
KTS-R10
JKS-10
JJS-10
10
2.2
FRS-R-15
KTS-R15
JKS-15
JJS-15
16
3
FRS-R-15
KTS-R15
JKS-15
JJS-15
16
4
FRS-R-15
KTS-R15
JKS-15
JJS-15
16
5.5
FRS-R-25
KTS-R25
JKS-25
JJS-25
25
7.5
FRS-R-25
KTS-R25
JKS-25
JJS-25
25
11
FRS-R-50
KTS-R50
JKS-50
JJS-50
50
15
FRS-R-50
KTS-R50
JKS-50
JJS-50
50
18.5
FRS-R-80
KTS-R80
JKS-80
JJS-80
65
22
FRS-R-80
KTS-R80
JKS-80
JJS-80
65
Quick Guide
Quick Guide
16
Danfoss A/S © Rev. 2014-01-22 All rights reserved.
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