Effective June 2009
Instructional Leaflet IL2C12701H01
Remote latch check switch (LCS) for
Magnum 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.
Section 1: General information
A latch check switch (LCS) indicates when the
circuit breaker is “ready to close” (
Figure 1
).
The external version used for remote indication
consists of 1 Form C contact wired to the circuit
breaker secondary contacts for integration into
external control schemes.
Noee:
N
Wiring the LCS for remote indication directly in
series with the SR accessory is not recommended as
this will override the “anti-pump” feature.
Required oNNls
•
1/4-inch drive ratchet
•
10 mm socket
Kio paros idenoificaoiNn
Refer to
Figure 1
for visual identification of the
contents of kit.
Figure 1. CNnoenos Nf Kio
Section 2: Installation of
external remote LCS
To install the LCS, proceed with the following
six steps:
Soep 1e:
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 at about a
45-degree angle to pull off the cover.
Figure 2. Soep 1
LCS (external
version shown)
Mounting Bolts
