Remove and Install the AC Input Link Fuses for Frames 8...15

IMPORTANT: It is recommended that you replace all three AC input link fuses.
Replace the AC input link fuses with the appropriate kit catalog number for the LCL filter module that is identified in these tables. Each LCL filter module requires three AC input fuses. Each AC input fuse kit contains three fuses. All fuses are Bussman Square Body - Flush End Contact -BKN/- Type K Indicator.
Frame 8 Fuses
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE1-F8
One 20-750-ML1-C540D505
400V/480V
690/700V (IEC/U.L.), 900 A
170M6463
SK-RM-ACFUSE2-F8
One 20-750-ML1-C770D740
400V/480V
690/700V (IEC/U.L.), 1250 A
170M6466
SK-RM-ACFUSE5-F8
One 20-750-ML1-E395F370
600V/690V
690/700V (IEC/U.L.), 700 A
170M6461
SK-RM-ACFUSE1-F8
One 20-750-ML1-E545F505
600V/690V
690/700V (IEC/U.L.), 900 A
170M6463
Frame 9 Fuses
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE3-F9
One 20-750-ML1-C1K1D1K0
400V/480V
600/500V (IEC/U.L.), 1800 A
170M6470
SK-RM-ACFUSE4-F9
One 20-750-ML1-C1K4D1K3
400V/480V
550/500V (IEC/U.L.), 2000 A
170M6471
SK-RM-ACFUSE2-F8
One 20-750-ML1-E760F735
600V/690V
690/700V (IEC/U.L.), 1250 A
170M6466
SK-RM-ACFUSE6-F9
One 20-750-ML1-E980F920
600V/690V
690/700V (IEC/U.L.), 1600 A
170M6469
Frame 10 Fuses
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE2-F8
One 20-750-ML1-C770D740 and
400V/480V
690/700V (IEC/U.L.), 1250 A
170M6466
SK-RM-ACFUSE4-F9
One 20-750-ML1-C1K4D1K3
550/500V (IEC/U.L.), 2000 A
170M6471
SK-RM-ACFUSE1-F8
One 20-750-ML1-E545F505 and
600V/690V
690/700V (IEC/U.L.), 900 A
170M6463
SK-RM-ACFUSE6-F9
One 20-750-ML1-E980F920
690/700V (IEC/U.L.), 1600 A
170M6469
Frame 11 Fuses
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE4-F9
Two 20-750-ML1-C1K4D1K3
400V/480V
550/500V (IEC/U.L.), 2000 A
170M6471
SK-RM-ACFUSE6-F9
Two 20-750-ML1-E980F920
600V/690V
690/700V (IEC/U.L.), 1600 A
170M6469
Frame 12 Fuses
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE2-F8
One 20-750-ML1-C770D740 and
400V/480V
690/700V (IEC/U.L.), 1250 A
170M6466
SK-RM-ACFUSE4-F9
Two 20-750-ML1-C1K4D1K3
550/500V (IEC/U.L.), 2000 A
170M6471
SK-RM-ACFUSE1-F8
One 20-750-ML1-E545F505 and
600V/690V
690/700V (IEC/U.L.), 900 A
170M6463
SK-RM-ACFUSE6-F9
Two 20-750-ML1-E980F920
690/700V (IEC/U.L.), 1600 A
170M646
Frame 13 Fuses
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE2-F8
Two 20-750-ML1-C770D740 and
400V/480V
690/700V (IEC/U.L.), 1250 A
170M6466
SK-RM-ACFUSE4-F9
Two 20-750-ML1-C1K4D1K3
550/500V (IEC/U.L.), 2000 A
170M6471
SK-RM-ACFUSE1-F8
Two 20-750-ML1-E545F505 and
600V/690V
690/700V (IEC/U.L.), 900 A
170M6463
SK-RM-ACFUSE6-F9
Two 20-750-ML1-E980F920
690/700V (IEC/U.L.), 1600 A
170M6469
Frame 14 Fuses
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE4-F9
Four 20-750-ML1-C1K4D1K3
400V/480V
550/500V (IEC/U.L.), 2000 A
170M6471
SK-RM-ACFUSE6-F9
Four 20-750-ML1-C1K4D1K3
600V/690V
690/700V (IEC/U.L.), 1600 A
170M6469
Frame 15 Fuses
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE2-F8
Two 20-750-ML1-C770D740 and
400V/480V
690/700V (IEC/U.L.), 1250 A
170M6466
SK-RM-ACFUSE4-F9
Four 20-750-ML1-C1K4D1K3
550/500V (IEC/U.L.), 2000 A
170M6471
SK-RM-ACFUSE1-F8
Two 20-750-ML1-E545F505 and
600V/690V
690/700V (IEC/U.L.), 900 A
170M6463
SK-RM-ACFUSE6-F9
Four 20-750-ML1-E980F920
690/700V (IEC/U.L.), 1600 A
170M6469
Follow these steps to remove and install the AC input link fuses.
  1. Review the product advisories in Before You Begin.
  2. Remove power from the system.
  3. Open the corresponding power bay enclosure door.
  4. If present, remove the guards from the enclosure.
  5. Disconnect the AC input fuse wire harness connector from fuse indicator switches on the fuses.
  6. Remove the three M12 x 13 mm hex nuts that secure the flexible bus cables to the AC input fuse terminals and remove the flexible bus cables.
  7. Remove the three M12 x 13 mm hex nuts that secure the fuse to the AC input bus bars and remove the fuses.
    example of how to remove the AC input fuses from the frame 8…15 LCL filter module AC input flexible bus bars
  8. Install the AC input link fuses in the reverse order of removal and verify that the fuse wire harness connectors are installed on the outer two terminals (A) of the fuse indicator switches.
    AC input fuse switch terminals identification
Provide Feedback
Have questions or feedback about this documentation? Please submit your feedback here.
Normal