Rockwell Automation 1502 400 Amp Medium Voltage Contactor (Series D) - Manual (Page 38)

4-10 Maintenance
1502-UM050D-EN-P – June 2013
Important: This procedure applies to adjustment of existing auxiliaries and
installation of new auxiliaries. Under normal conditions, auxiliaries will last at
least 1,000,000 operations. If auxiliary contacts must be replaced, discard the
entire assembly and install a new assembly. This is easier than replacing a
single contact block.
Refer to Chapter 6 for the part number(s) required for this procedure.
To facilitate the set-up procedure, the contactor is held closed mechanically by
means of a clamping fixture as shown in Figure 4.4. It is important that the
contactor is held closed tightly with the armature plate against the magnet
cores when gauging the over-travel and auxiliary positioning.
To aid in closing the contactor mechanically, a clamping fixture is required.
Allen-Bradley part number 80154-149-51 is recommended.
Auxiliary Actuator
Armature Plate
Armature Stop Bracket
Auxiliary Actuator
Armature Plate
Armature Stop Bracket
Figure 4.12 – Contactor Components
Auxiliary Contact Set-up
Procedure