2
Installation and removal instructions
for IZM series fixed breaker
three-way Type 32 cable interlock kit
EATON
www.eaton.com
Instructional Leaflet
IL0131187EN
Effective June 2022
m
WARNING
(1) ONLY QUALIFIED ELECTRICAL PERSONNEL SHOULD BE PERMITTED TO
WORK ON THE EQUIPMENT
(2) ALWAYS DE-ENERGIZE PRIMARY AND SECONDARY CIRCUITS IF A CIR-
CUIT 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.
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WARNING
THE INSTRUCTIONS CONTAINED IN THIS IL AND ON PRODUCT LABELS
MUST BE FOLLOWED. OBSERVE THE FIVE SAFETY RULES.
• DISCONNECTING;
• ENSURE THAT DEVICES CANNOT BE ACCIDENTALLY RESTARTED;
• VERIFY ISOLATION FROM THE SUPPLY;
• EARTHING AND SHORT-CIRCUITING; AND;
• 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 MAIN-
TENANCE INTERVALS AS WELL AS THE INSTRUCTIONS FOR REPAIR AND
EXCHANGE MUST BE STRICTLY ADHERED TO PREVENT INJURY TO PER-
SONNEL AND DAMAGE TO THE SWITCHBOARD.
General information
This Information Leaflet provides detailed installation instructions for
installing and interconnecting one fixed IZM breaker to another type
of low voltage circuit breaker (LVCB) in any position (see A,
) for a Type 32 interlock configuration as shown in
. When purchasing kits for a Type 32 interlock configura-
tion setup, additional interlock kits (the types of interlock kits and
the other breakers on which they can be installed that are compat-
ible with this kit are listed in
) are required for the other
two breakers as well as the interconnecting cable kits (three are
required) .
For Type 32 interlock configurations, the mechanical interlock holds
one of the breakers tripped or open (prevents closure) when the
other two are closed . A lever assembly is mounted on each breaker
and interfaces with the pole shaft and trip bar . The lever assemblies
are interconnected with cables provided in interconnecting cable
kits (listed in
) that are compatible with this interlock kit . The
cable kits, purchased separately, each contain two cables and can be
used for any orientation of the breakers according to the installation
recommendations in
Step 6
.
Refer to
for identification of interlock kit and
interconnecting cable kit contents, respectively .
Locate compression
spring above swivel
fitting
Locate compression
spring above swivel
fitting
Typical interlock
assembly connection
Breaker C
Breaker B
Breaker A
Figure 1. Cable routing for Type 32 interlock configurations
Table 1. Type 32 interlock logic
Type 32 (six cable)
Breaker
A
B
C
A
B
C
Allowed states or conditions
0
0
0
1
0
0
0
1
0
0
0
1
1
1
0
0
1
1
1
0
1
0 = open
1 = closed
