6
IZM32 / IN32 low voltage air circuit breaker
MN013017EN May 2022 www.eaton.com
Section 2: Receiving, handling, and installation
Compartment
Front Door
Secondary Connection
Not Made
Rear of
Compartment
Primary
Connections
Not Made
• No Electrical Connections Made
• Breaker On Extension Rails
• Remove or Inspection Position
Circuit Breaker Out
of Compartment On
Extension Rails
Circuit
Breaker
Side View
2-7 Installing drawout circuit breaker
In structures equipped for drawout circuit breakers, a
bolted-in cassette with movable extension rails supports
the circuit breaker. The extension rails must first be pulled
all the way out. Once the rails are fully extended, the circuit
breaker can be carefully placed on the extension rails.
CAUTION
It is important to take great care when placing a drawout
circuit breaker on its extension rails. If the circuit breaker is
not properly seated on the extension rails, it could fall from
the rails, causing equipment damage and/or bodily injury.
Carefully lower the circuit breaker down onto the extension
rails. Be certain that the circuit breaker’s four molded
drawout rail supports are fully seated in the extension rail
cutouts on both sides (Figure 2-3). Do not remove the
lifting yoke from the circuit breaker until it is properly seated
on the rails.
Once the circuit breaker is on the extension rails and the
lifting yoke is removed, proceed with the rest of the circuit
breaker installation.
2-7.1 Circuit breaker positioning
The IZM32 / IN32 drawout circuit breaker has four normal
positions:
• REMOVE (withdrawn) (Figure 2-4)
• DISCONNECT (Figure 2-5)
• TEST (Figure 2-6)
• CONNECT (Figure 2-7)
The REMOVE position is a position outside the
compartment on the cassette’s drawout rails where the
circuit breaker is not engaged with the levering mechanism.
The DISCONNECT, TEST, and CONNECT, positions are
reached by means of the levering mechanism.
With the breaker solidly positioned on the cassette’s
extension rails and levering-in mechanism in the
DISCONNECT position, carefully and firmly push the circuit
breaker into the compartment as far as it will go. The outer
(recessed) portion of the circuit breaker faceplate should
align with the GREEN target line (labeled DISC) on the
inside top-left wall of the cassette (Figure 2-8).
Figure 2-4 REMOVE position
CAUTION
