Section 2: Installation Of Three-Way Cable Interlock - Eaton NRX Series Instruction Leaflet

Series NRX drawout and breaker
three-way cable interlock installation
and removal instructions
Section 2: Installation of three-way cable
interlock
Proceed with the following 9 steps.
Step 1e: Remove the four screws (six for 4-pole breaker) holding the
cover in place. Pull down on the charging handle and remove the front
cover.
Step 2e: Remove the three screws holding the levering device side
plate then remove the levering device side plates.
Figure 2. Steps 1 and 2.
Step 3e: Install the drive arm (E) to the end of the pole shaft using an
M6 x 30 mm flat-head screw (F). The drive arm should be oriented as
shown. Torque to 65-85 in.-lbs (7 .3 - 9.6 N•m).
Step 4e: Install the trip pin (A) to the trip arm using an M3 x 16 mm flat-
head screw (B). Use a wrench to hold the trip lever during installation.
Torque to 3-5 in.-lbs (0.3 - 0.6 N•m). Replace Lev-in side plate (Figures
3 and 4).
Figure 3. Steps 3 and 4.
Figure 4. Steps 4.
Step 5e: Fasten the interlock assembly (J) to the drawout cassette's
right-side sheet using four M6 x 12 mm hex bolts (C) and four lock
washers (D). Torque to 40 - 50 in.-lbs (4.5 - 5.6 N•m).
(A) Trip pin
Figure 5. Step 5.
Step 6e: For type 32 and 33 interlock kits, fasten four cable brackets
(G) to the drawout cassette's right-side sheet just below the interlock
assembly (mounted in Step 5) using two M6 x 10 mm thread-forming
screws (H). Torque to 65 - 85 in.-lbs (7 .3 - 9.6 N•m) (refer to Figure 8
for the correct configuration of type 31 interlock kits).
(E) Drive
arm
Instruction Leaflet IL01301060E
Align as shown
EATON www.eaton.com
Effective June 2016
(C) and (D)
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