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Instructional Literature
Page 16
Effective: May 2005
Appendix A: DS Interface Board Installation Procedure
Figure 31. Overview: New DS Interface Board and RSM Installed
on the DS Trip Unit Mounting Frame.
If you are installing the Arcflash Reduction Maintenance Switch on
a DS breaker that was retrofitted with a Retrofit kit purchased
before 06/05 (DS Interface Board P/N 256P726H04), follow the
procedure detailed below to install the updated DS Interface
Board.
Note: If an updated DS Interface Board is needed and was not ordered with
the Arcflash Reduction Maintenance Switch kit, contact your Eaton Repre-
sentative to secure an updated DS Interface Board.
A. Align the holes in the Reduction Setting Module (RSM) with
the existing holes in the RSM mounting bracket. Secure the
RSM to the mounting bracket using the (2) .112-40 × 0.25"
thread cutting pan head screws supplied.
B. Note the connection point of each harness to the DS Interface
Board (positions P1 through P10). Mark each harness for
reconnection later in the installation process.
For more information visit: www.EatonElectrical.com
Arcflash Reduction Maintenance Switch
P1
P1
P1
P8
P8
P8
1
1
1
1
P P
1 1 1 1
P9
P9
P9
P3
P3
P3
1
1
1
1
P2
P2
P2
1
1
P10
P10
P10
1
1
Figure 32. Connection on the DS Interface Board.
C. Disconnect each harness from the DS Interface Board.
D. Remove and save the four screws, spacers, and lock nuts
securing the DS Interface Board to the trip unit mounting
frame. Remove the DS Interface Board.
E. Align the RSM assembly and the new DS Interface Board with
the two holes near the top of the trip unit mounting frame.
F. Using the original mounting hardware, spacers, and lock nuts
removed in Step D or the supplied .112-40 hardware, secure
the top of the new DS Interface Board and the RSM assembly
to the trip unit mounting frame.
Application and Installation
1
1
1
1
25 25
25
P7
P7
P7
1
1
P4
P4
P4
1
1
P5
P5
P5
1
1
P6
P6
P6
24
24 24
47 47
47
IL01906001E
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