Eaton IZM Instructional Leaflet

Instructional Leaflet IL0131173EN
OTS/bell alarm in IZM
low voltage circuit breakers
(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 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 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 2022
m WARNING
m WARNING
Section 1: General information
An overcurrent trip switch (bell alarm) provides an
electrical indication when a circuit breaker trips as
a result of the trip unit reacting to an overcurrent
condition. Opening as a result of a circuit breaker's
manual open button, shunt trip, or undervoltage
release does not cause the overcurrent trip switch
to operate.
A number of graphics in this instruction leaflet use
N ote:
the standard frame (IZM32) circuit breaker for illustrative
purposes only. The double frame circuit breaker (IZM63)
is handled in a similar fashion. Some components, such
as the trip unit, are not shown for clarity.
Section 2: Installation of
OTS/bell alarm
To install the OTS/bell alarm, proceed with the
following steps:
Step 1: Remove the front cover by unscrewing
the hex-head captive bolts (four for three-pole,
six for four-pole) that join the cover to the breaker
housing using a 10 mm 1/4-inch drive socket.
Then hold the charge handle down to pull off
the cover.
Step 2: Place the appropriate label on the
front cover nameplate space located under
"Accessories. "
Figure 1. Steps 1 and 2
Bolt
Label