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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
labeling
Mounting panel
Hook foot
UVR
Lock
Mounting position
of the first URV
Slide forward
Secondary terminal block
Mounting panel
Figure 2. Step 3
Figure 3. Step 4
Step 3: Move the lock of the undervoltage release to the
“unlocked” position, and install the hook foot into the slot as
shown. Slide the undervoltage release forward to make the
hook foot fully fit into the slot of the mounting panel. Move
the lock to the “locked” position.
Step 4: Connect the undervoltage release wires to Position
93 and 94 marked on the secondary terminal block.
Step 5: Re-install the front cover by following the procedure
in Step 1.
IZM9 low voltage circuit breaker auxiliary contact
kits
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
Auxiliary contacts are used for remote indication of whether
the circuit breaker is in OPEN state or in CLOSE state. A
maximum of 3 auxiliary switches can be installed on the cir-
cuit breaker. Two Normally Open contacts (“A” contacts) and
two Normally Close contacts (“B” contacts) are available on
each switch, leading to a total of 12 contacts for three auxil-
iary switches.
Section 2: Installation of auxiliary contacts
Proceed with the following 5 steps to install the auxiliary
contacts:
Step1: Remove the inner hexagonal mounting screws (four
for 3 pole breakers and six for 4 pole breakers) from the
circuit breaker’s front cover using a 10 mm 1/4-inch socket
wrench. Then pull down on the charging handle (by about
45° angle) to remove the front cover.
Step 2: Attach the corresponding label under “Accessories”
on the cover nameplate.
Figure 1. Step 1 and 2
