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Rockwell Automation Publication 35-UM001A-EN-P - May 2022
Chapter 10 Maintenance and Repair
Fuse Replacement
The following fuses can be replaced on the Armor PowerFlex drive:
•
Three 3-phase input line fuses
•
Two EM brake fuses
•
One fuse for Sw24V power and one fuse for Unsw24V
power
3-phase AC Power and EM Brake Fuse Replacement
1. Loosen the screws and remove the power section door. See
on
.
2. Loosen the screws and remove the internal power section cover.
See
3. Remove fuses from holding. We recommend using fuse puller FP-3 from
Eaton/Bussmann.
4. Check each fuse with a multimeter to see if they are in good condition. If
damaged, replaced the fuses.
Table 96 - 3-phase Input Power and EM Brake Fuse Specifications
Specification
3-phase AC Line Power Fuses
EM Brake Fuses
Part No.
KTK-20
KTK-6
Description
20 A, 600V AC, UL Listed Class CC, Std. 248-14 6 A, 600V AC, UL Listed Class CC, Std. 248-14
Current
20 A
6 A
Interrupting Capacity
100 kA rms
100 kA rms
Voltage Rating
600V AC
600V AC
Manufacturer
Bussmann
Bussmann
Dimension mm (in.):
38.1 (1.5) x 10.3 (0.41)
38.1 (1.5) x 10.3 (0.41)
When removing line power fuses, we recommend starting with the middle
one, for ease of access.
DISCONNECT OUT
DC BUS
3-phase input line fuses
EM brake fuses