Rockwell Automation 1502 400 Amp Medium Voltage Contactor (Series D) - Manual (Page 44)

4-16 Maintenance
1502-UM050D-EN-P – June 2013
Mechanical Latch
Mechanism Assembly
Mechanical Latch
Mechanism Assembly
Figure 4.20 – Access to Replace Coil
5. Remove the roller shaft retaining ring on the right-hand side, and slide the
roller shaft out to the left. Remove the trip core mounting screw as shown
in Figure 4.21 and remove the coil and core (earlier version contactors
with four latch mounting bolts do not have a trip core mounting screw).
Trip Core
Roller Shaft
Trip Coil
Roller Shaft
Retaining Ring
Trip Core
Mounting Screw
Trip Core
Roller Shaft
Trip Coil
Roller Shaft
Retaining Ring
Trip Core
Mounting Screw
Figure 4.21 – Removal of Trip Coil
6. Install the new coil onto the core. Slide the core and coil into position with
the leads toward the back of the contactor and install the core mounting
screw. Replace the roller shaft and re-install the retaining ring.
7. Position the latch mechanism in the contactor and install the mounting
bolts leaving them loose for adjustment.
Mechanical Latch Trip Coil
Replacement Procedure
(cont.)