4
Instruction Leaflet
IL29C150G
Effective December 2011
Installation Instructions for Shunt Trip for
R-Frame Series C Circuit Breakers and
Molded Case Switches
EATON CORPORATION
www.eaton.com
Fig.
2-2
Accessory Location Diagram.
Cover
Lever
I
Fig. 2-3
Shunt Trip Positioned
and
Locked
in
Mounting
Deck.
Note:The circuit breaker's cover interlock will pre-
vent the breaker from being latched while the cover
is removed.The interlock consists of
a
spring load-
ed lever pivoting on the right side plate just below
the handle (see Fig. 2-3).Use
a
tool t o depress and
hold the lever even with
the top
of the circuit break-
er base while performing mechanical tests.
Perform mechanical check of shunt trip after instal-
lation:
a.
With the circuit breaker still electrically isolated,
depress the cover interlock lever and reset circuit
breaker.
b. Using a small flat-blade screwdriver, depress shunt
trip plunger (Fig. 2-3). Circuit breaker should move to
trip position.
c. If mechanical check does not trip circuit breaker, see
if shunt trip is correctly installed. If shunt trip appears
to be properly installed and problem persists, contact
Eaton.
Test cutoff switch. Connect ohmmeter across pigtail
leads or terminal block connections. Check continu-
ity as follows:
a. Circuit breaker tripped no continuity.
b. Circuit breaker closed less than 9000 ohms.
(Depress cover interlock lever to close breaker) Cir-
cuit breaker opened
-
less than 9000 ohms.
c.
If
cutoff switch fails test, make sure that shunt trip
module is properly seated in mounting deck slots.
problem persists contact Eaton.
CAUTION
WHEN INSTALLING CIRCUIT BREAKER COVER,
MAKE SURE THAT PIGTAIL LEADS ARE CLEAR OF
THE COVER.
2-10. With circuit breaker handle in tripped position and
accessory pigtail leads routed as required, install
circuit breaker cover.
2-1
1.
Position accessory labels supplied with kit on cir-
cuit breaker as shown in Fig. 2-4.
Note: Accessory labels show connection diagram
for shunt trip. Pigtail leads are color coded white
and
yellow.
2-12. Install circuit breaker.
Torque cover screws to
24
in
-
lbs (2.71 Nm).
2-13.
Connect shunt trip as required (see Fig. 2-5).
Eaton assumes no responsibility for malfunctioning
accessories installed improperly by the customer.
2-9.
2-8.
