Eaton IZM Instructional Leaflet

Instructional Leaflet IL0131169EN
Compact motor operator 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
A motor operator is an electric motor assembly
internally mounted in the circuit breaker. It charges
the closing springs electrically for remote or local
operation. The motor operator can be factory or
site installed.
N ote: A number of graphics in this instruction leaflet use
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.
Required tools
1/4-inch drive socket wrench (with torque
•
measuring capabilities)
10 mm socket
•
7/16-inch combination wrench
•
Phillips head screwdriver (#2 recommended)
•
3/16-inch straight-blade screwdriver
•
(eight inches long)
Kit parts identification
Refer to Figure 1 for visual identification of the
parts listed below:
(A) Rear mounting bracket (one)—(not required for
narrow frame breaker)
(B) Motor operator (one)
(C) Support pin (two)
(D) M6 x 20 mm hex bolt (one)
(E) M6 Helical lock washer (two)
(F) M6 x 10 mm thread-forming screw (two)
(G) Hi-lo screw #10 x 5/8 (two)
(H) Thread-locking adhesive
(I) Cable tie (four)
(J) Accessory labels
(A)
(B)
(H)
(F)
(G)
Figure 1. Contents of Kit
(D)
(E)
(C)
(I)
(J)