Eaton IZM20 Manual

05/10 AWA1230-2437
IZM20 and IZM93 frame cassette
rejection bracket kit
(1) Only qualified electrical persOnnel shOuld
be permitted 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.
the instructiOns cOntained in this awa and On
prOduct labels have tO be fOllOwed. Observe
the five safety rules:
– discOnnecting
– ensure that devices cannOt be
accidentally restarted
– verify isOlatiOn frOm the supply
– earthing and shOrt-circuiting
– cOvering Or prOviding barriers tO
adjacent live parts
discOnnect the equipment frOm the supply.
use Only authOrized spare parts in the repair
Of the equipment. the specified maintenance
intervals as well as the instructiOns fOr
repair and exchange must be strictly adhered
tO prevent injury tO persOnnel and damage tO
the switchbOard.
Effective May 2010
 warning
 warning
2A10996H01
Section 1: General information
IZM drawout circuit breakers come in a variety
of continuous current and interrupting ratings. To
prevent the insertion of a drawout circuit breaker
into a cassette with which it is incompatible,
rejection interlock key plates are provided for
both the circuit breaker and the cassette. As the
breaker is pushed into the cassette, the interlock
pins on the breaker move past the pins in the
cassette if they are compatible.
Section 2: Installation of
rejection bracket
To install the rejection bracket, proceed with the
following three steps:
Step 1: Align the supplied bracket as shown,
and fasten to the floor of the cassette with
two supplied M6 x 10 thread-forming screws.
Torque to 8–10 ft-lbs (10.5–13 Nm). Refer to
Step 2 for a three-pole cassette or Step 3 for a
four-pole cassette).
N Nte: Do not install the bracket for the 40/42 kA rating.
Figure 1. Step 1
Align with
Right Side Hole
Align with Rear
Hole for 50 kA
or Basic Rating
for IZM20_
and IZM93_
Align with Front
Hole for 65 kA
or Normal Rating
for IZM20_
and IZM93_