6
Series NRX drawout and breaker
three-way cable interlock installation
and removal instructions
EATON
www.eaton.com
Instructional Leaflet
IL01301060E
Effective June 2016
Figure 12.
Slide smaller
diameter portion of
bulkhead fitting into
cable bracket slot.
Raise cable assembly
until threaded portion
of bulkhead fitting
enters slotted hole in
cable bracket (threads
show above bracket).
Step 9 - mounting cable assembly in cable bracket.
Figure 13. Step 9.
Step 10e:
This step describes how to attach the driven (long rod) end of
a cable to its interlock assembly and cable bracket on another breaker.
This is accomplished by repeating Step 9, except the driven end does
not utilize a compression spring between the swivel and outer nut.
Replace short spacer tube on cable with the long spacer tube from this
kit. Install the second cable.
Figure 14. Step 10.
Upper nut
(tighten against
spacer tube)
Compression
spring
Swivel fitting
Lower
nuts
Trip arm
Upper nut
(tighten against
spacer tube)
Compression
spring
Swivel fitting
Lower nuts
Rubber boot
Outer bulkhead
nut
Bulkhead nut
Driven end cable
bracket
Swivel fitting
Driven end
(long rod)
Lower nuts
Driven end cable
bracket
Figure 15. Step 10.
Step 11e:
This step describes how to adjust types 31 and 33 cables.
Cable adjustments are made with the large bulkhead nuts only.
Smaller nuts on the rod ends should not be moved. Adjustments are
made with all breakers OPEN.
Ensure all bulkhead fittings still approximately centered on cable
mounting bracket, allowing for adjustment room in either direction.
Repeat Items 8 and 9 of Step 9 if any bulkhead fitting requires
centering.
Perform initial adjustments on driven (long rod) end of cable (refer to
Figure 15).
There should be little to no clearance between upper rod nut and face
of swivel on which it pulls (refer to Figure 16).
Too much clearance
- adjust both bulkhead nuts to retract cable
housing.
No clearance or interference
- advance cable housing in a similar
manner.
For additional adjustment length
- bulkhead nuts on other end of
cable can be used.
Torque cable bulkhead nuts on both ends to 100 -120 in.-lbs
(11 - 13 N•m) when proper clearance is attained on driven end.
Upper nut
Swivel fitting
Threaded end
Long spacer tube
