Effective December 2021
Instructional Leaflet
IL0131170EN
Auxiliary switch kit in
IZM low voltage circuit breakers
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 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.
Section 1: General information
An auxiliary switch is an optional device providing
remote electrical indication if the circuit breaker is
open or closed. Up to three auxiliary switches can
be mounted in the circuit breaker. Each switch has
four normally open (“A”) and four normally closed
(“B”) contacts for a total of 12 available change
over contacts.
Section 2: Installation of the
auxiliary switch
To install the auxiliary switch, proceed with the
following five 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 hous-
ing using a 10 mm 1/4-inch drive socket. Then hold
the charge handle down approximately 45 degrees
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
Step 3:
Slide the lock on the switch to the
unlocked (up) position. Install the hook feet
down through openings as shown. Then slide
the auxiliary switch forward so the feet engage
the mounting plate. Slide the lock down into the
locked position.
Figure 2. Step 3
ote:
N
The number of auxiliary switches and shunt trips
cannot exceed four.
Label
Bolt
Forward
Auxiliary Switch
Second Switch
Here
Mounting
Plate
Third Switch Here
First
Switch
Here
Hook
Feet
Lock
