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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
Figure 1. Step 1
Figure 2. Step 2
IZM9 fixed type circuit breaker secondary terminal
kit replacement
WARNING
(1) Only qualified electrical personnel should be permit-
ted to work on the equipment.
(2) Always de-energize primary and secondary circuits
if a circuit breaker cannot be removed to a safe work
location.
(3) Drawout circuit breakers should be levered (racked)
out to the DISCONNECT position.
(4) All circuit breakers should be switched to the OFF
position and mechanism springs discharged.
Failure to follow these steps for all procedures described
in this instruction leaflet could result in death, bodily
injury, or property damage.
Section 1: General information
The secondary terminal kits are mounted on the top front portion of
the circuit breaker for connection to secondary wirings.
Section 2: Installation of secondary terminals
Proceed with the following 3 steps:
Step1: Remove the hexagonal screws (four for 3 pole breakers 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: To install the new connector assembly, use two M6*2 hex-
agonal screws and two M6 self-locking washers.
Step 3: Re-install the front cover.
IZM9 drawout type circuit breaker cassette door
interlock spare parts
WARNING
(1) Only qualified electrical personnel should be permit-
ted to work on the equipment.
(2) Always de-energize primary and secondary circuits
if a circuit breaker cannot be removed to a safe work
location.
(3) Drawout circuit breakers should be levered (racked)
out to the DISCONNECT position.
(4) All circuit breakers should be switched to the OFF
position and mechanism springs discharged.
Failure to follow these steps for all procedures described
in this instruction leaflet could result in death, bodily
injury, or property damage.
Section 1: General information
The cassette door interlock device is used to lock the cas-
sette door when the circuit breaker is in CLOSED state.
Required tools
• 10mm socket wrench
• Phillips screw driver (#2 recommended)
• Pocket knife
• Vice
• Round file
Kit Parts Identification
Refer to Figure 1 for identification of the parts listed below:
(A) M6 nut (1)
(B) M6×12 bolt (6)
(C) Interlock assembly (1)
(D) Lock latch assembly (1)
(E) Drive arm (1)
(F) Compression spring (1)
(G) M6×25 connection screw (1)
(H) Connecting rod (1)
(I) Spring pad (5)
(J) Square nut (4)
Screw
Secondary terminal kits
Self-locking washer
M6 mounting screw