2
Series IZMY OFF-position safety lock
Instruction Leaflet
IL0131235ZU
Effective January 2024
EATON
www.eaton.com
Section 1: General information
The key interlock secures the breaker in the “OFF” position. It is
mounted in the upper portion of the breaker and can be viewed from
the front cover. The customer supplies the keylock. The following
safety features are provided.
1. With NO key, the breaker is “OPEN” and cannot close.
2. With the key ON (key in the cylinder) and rotated, the breaker is
fully functional.
3. The key cannot be removed when the breaker is ON (closed).
ote:
N
To remove the key, press the breaker “OFF” button, and rotate the key
90 degrees counterclockwise.
Kit parts identification
• OFF-position safety lock (1)
• Screws M4×10 (1)
Required Tools
• Phillips screwdriver
•
Drill
Φ
2
Section 2: Installation of key interlock
Proceed with the following 4 steps.
Step 1:
Remove the mounting screws from the circuit breaker front
cover with the Phillips screwdriver. Pull down the charging handle (by
an approx. 45° angle) to remove the cover.
Figure 1.
Mounting screws
Step 1
Step 2:
Place the OFF-position safety lock onto the mechanism
cover and secure it with the M4×10 screw (the lock should be in the
unlocked state during mounting).
Figure 2.
Screw M4×10
Step 2
Step 3:
Make a cutout (
Φ
25) on the cover according to the cover
outline.
Figure 3.
Ø25
Step 3
Step 4:
Put the cover back.
