Disconnect Position - Eaton MDN-408 Instructions For Installation, Operation And Maintenance

Table 7.1 Circuit Breaker Troubleshooting Guide (continued from previous page)
Symptom
Circuit breaker cannot
be closed remotely (can
be closed locally)
Circuit breaker cannot
be closed locally (but
can be closed remotely)
Circuit breaker does not
recharge electrically but
will recharge manually
Drawout circuit breaker
will not lever-in
I.B. 2C12060H08
Probable Cause
Spring release (closing) coil
supply voltage low or spring
release faulty
Secondary contact wiring
problem
Spring release closing coil
signal blocked
Opening and/or closing
pushbuttons locked
Charging motor supply voltage
absent or too low (<85%)
Charging motor faulty
Circuit breaker will not fully
enter cell (cell rejection
code plate)
Levering-in screw not in
fully DISCONNECT
position at insertion
Levering-in screw in

DISCONNECT position

but not pushed in far enough
Protective boots covering
stationary disconnects
Shutter jammed or locked
For more information visit: www.EatonElectrical.com
Instruction Book
Effective: May 2006
Corrective Actions
Check power supply voltage;
replace spring release if faulty
Make sure electrical pin and
socket connectors are properly
seated in molded plug. Verify
proper wiring
Clear Digitrip 1150 relay contact
Check reason for lock
Check charging motor electrical
circuit voltage (check under
load)
Replace charging motor assembly
Circuit breaker ratings do not
correspond to the cassette
requirements
Rotate levering-in screw
counterclockwise to
DISCONNECT position, then
insert breaker fully into cassette
Push circuit breaker in as far
it will go, cover should be flush
with front of cassette side plate
Remove boots
Clear problem
Page 69