Effective May 2010
2C15996H02
05/10 AWA1230-2442
Spring release kit in
IZM low voltage circuit breakers
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.
warning
the instructiOns cOntained in this awa and On
prOduct labels have tO be fOllOwed. Observe
the five safety rules:
– discOnnecting
– ensure that devices cannOt be
accidentally restarted
– verify isOlatiOn frOm the supply
– earthing and shOrt-circuiting
– 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.
Section 1: General information
The spring release (SR) (closing coil) remotely
closes the circuit breaker when the coil is
energized by a voltage input. When the spring
release is used in conjunction with a latch check
switch, the closing spring must be fully charged
and the trip latch reset (not held in the tripped
position) for the spring release to operate. If
these conditions are not met, the close signal
will be ignored until it is removed and re-applied.
Section 2: Installation of
spring release
To install the spring release, proceed with the
following six 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 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 spring release
assembly to the unlocked (up) position. Install
the hook feet down through openings as shown.
Then slide the spring release forward so the feet
engage the mounting plate. Slide the lock down
into the locked position.
Label
Bolt
