Fuses - Danfoss VLT CDS 803 Quick Manual

Quick Guide
Illustration 1.7 Tighten support bracket on mains wires.

1.3.7 Fuses

Branch circuit protection
To protect the installation against electrical and fire hazard, all branch circuits in an installation, switch gear, machines etc.,
must be short-circuit and overcurrent protected according to national and local regulations.
Short circuit protection
Danfoss recommends using the fuses listed in Table 1.9 to protect service personnel or 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 compressor.
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
UL/Non UL compliance
Use the fuses listed in Table 1.9 to ensure compliance with UL or IEC 61800-5-1.
NOTICE
In the event of malfunction, failure to follow the protection recommendation may result in damage to the frequency
converter.
CDS 803
3x200-240 V IP20
4 TR/VZH028
5 TR/VZH035
6.5 TR/VZH044
3x380-480 V IP20
4 TR/VZH028
5 TR/VZH035
6.5 TR/VZH044
Table 1.9 Fuses
MG18M102
Quick Guide
(symmetrical), 480 V maximum.
rms
Bussmann Bussmann
Type RK5 Type RK1
FRS-R-50 KTN-R50
FRS-R-50 KTN-R50
FRS-R-80 KTN-R80
FRS-R-25 KTS-R25
FRS-R-25 KTS-R25
FRS-R-50 KTS-R50
Danfoss A/S © Rev. 09/2014 All rights reserved.
Fuse
UL
Bussmann Bussmann
Type J Type T
JKS-50 JJN-50
JKS-50 JJN-50
JKS-80 JJN-80
JKS-25 JJS-25
JKS-25 JJS-25
JKS-50 JJS-50
1 1
Non UL
Max fuse
Type G
50
50
65
25
25
50
7