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New generation IZM97, 99 low voltage air circuit breaker instruction manual
MN013010EN February 2020 www.eaton.com.cn
Section 4: Accessory devices
Screw
Remove the
separation
block
Front cover
If square nut is not
fitted into slot, refer to
Note 2 in Step 3
Tripper bar
Main shaft
Drive arm (E)
Refer to Note 1 in Step
3 for main shaft end
machining method
M6 screw (B)
Parts package 2 (as shown in Figure 2): Cables are included
in the package.
(K) Cable holder (2)
(L) M6 self-locking washer (4)
(M) M6 * 10mm tapping screw (4)
(N) Cable assembly (2) - (5, 6, 8, 10-foot for lengths)
Figure 1. Contents of parts package 1
Figure 2. Contents of parts package 2
(A)
(B)
(C)
(I)
(G)
(G)
(D)
(E)
(E)
(F)
(H)
(J)
(J)
(M)
(L)
(K)
(N)
Figure 3. Step 1
Section 2: Installation of interlocking cable
Proceed with the following 11 steps:
Step1: Remove the hexagonal screws (four for 3 pole break-
ers and six for 4 pole breakers) from the front cover using
a 10 mm 1/4-inch socket wrench. Then pull down on the
charging handle by 45° angle to remove the front cover.
Step 2: Remove the separation block from the right side of
the front cover using a plier, to form a U-shaped slot. Note
that the separation edges must not have burrs.
Step 3: Mount the drive arm (E) to the right end of the main
shaft using the drive arm extension rod. Connect the M6
* 28mm flat-head screw to the drive arm. Torque to 7.3-
9.6N.m.
Note:
(1) If the main shaft end is not machined well, please contact
Eaton for assistance;
(2) If the M6 square nut cannot be placed in the fitting slot,
unscrew the screw on the top of the bracket and loosen
the two screws at the bottom. Keep the tripper bar in the
position as shown below, and slide the bracket top parts
from the circuit breaker. The, insert a square nut (F) in
the slot. The plane of the nut should be placed outward.
Finally re-tighten the three screws.
Step 4: Install the interlocking assembly (G) and cable hold-
er (K) on the mounting panel (J). To install the interlocking
assembly, three M6*12 hexagonal screws (A) and three
self-locking washers (C) are required for use. Torque to 4.5-
6Nm. To install the cable bracket, two M6*10 tapping screws
(M) and self-locking washers (L) are required. Torque to
7-9Nm.
Figure 4. Step 2
Figure 5. Step 3