7
Instruction Leaflet
IL29C092E
Effective November 2013
Installation Instructions for KD, HKD, KDC, CKD,
CHKD, Circuit Breakers with Digitrip OPTIM
Trip Unit and Powernet and/or Zone Interlock
EATON CORPORATION
www.eaton.com
Indicator
Color.
Red
On
Indicator
Reset
Figure 3-1 Circuit Breaker
breaker interface module. If IMPACC Series III software
is part of the system, this too can be used to set the trip
unit settings. Refer to the user manuals for details.
3-0
MANUAL OPERATION
Manual operation of the circuit breaker is controlled by
the circuit breaker handle and the PUSH-TO-TRIP but-
ton in the trip unit. The circuit breaker handle has three
positions, two of which are shown on the cover with
raised lettering to indicate ON and OFF. On the handle,
ON, OFF, and trip are also shown by a color-coded strip
for each circuit breaker handle position: red for ON,
white for tripped, and green for OFF (see Figure 3-1).
Circuit Breaker Reset
After a trip operation, the circuit breaker is reset by mov-
ing the circuit breaker handle to the Reset (extreme
OFF) position. It is not necessary to press the reset
button before resetting the breaker. The reset button
affects only the cause of trip indicator LED’s. It does not
affect the operation of the circuit breaker itself.
No circuit breaker should be reclosed until the
cause of trip is known and the situation rectified.
PUSH-TO-TRIP Button
The PUSH-TO-TRIP button operates the circuit breaker
tripping function and may be used to periodically exer-
cise the operating mechanism. The button is designed
to be operated by a small screwdriver.
4-0
INSPECTION AND FIELD TESTING
Series C molded case circuit breakers are designed to
provide years of almost maintenance-free operation.
The following procedure describes how to do a limited
amount of field inspection and testing of a circuit break-
er.
Inspection
Circuit breakers in service should be inspected periodi-
cally. The inspection should include the following
checks 4-1 through 4-7.
WARNING
THE VOLTAGES IN ENERGIZED EQUIPMENT CAN
CAUSE SEVERE PERSONAL INJURY OR DEATH.
BEFORE INSPECTING THE CIRCUIT BREAKER IN
AN ELECTRICAL SYSTEM, MAKE SURE THE CIR-
CUIT BREAKER IS SWITCHED TO THE OFF POSI-
TION AND THAT THERE IS NO VOLTAGE PRESENT
WHERE WORK IS TO BE PERFORMED.
SOME COMMERCIAL CLEANING AGENTS WILL
DAMAGE THE NAMEPLATES OR MOLDED PARTS.
MAKE SURE THAT THE CLEANING AGENTS OR
SOLVENTS USED TO CLEAN THE CIRCUIT BREAK-
ER ARE SUITABLE FOR THE JOB.
4-1.
Remove dust, dirt, soot, grease, or moisture from
the surface of the circuit breaker using a lint-free dry
cloth, brush, or vacuum cleaner. Do not blow debris into
