5
Instruction Leaflet
IL29C109J
Effective November 2013
Installation Instructions for ND, HND, NDC, CND,
CHND, CNDC Circuit Breakers with Digitrip OPTIM
Trip Unit and Powernet, and/or Zone Interlock
EATON CORPORATION
www.eaton.com
2 50 R
(6 35 R)
1 $06
(48 41)
Handle
188 R
5 587
(141 91)
(80 95)
6 375
(161 92)
FRONT COVER CUTOUT
Figure 2-4 Circuit Breaker Escutcheon Dimensions
HAZARDOUS VOLTAGE CONDITIONS CAN CAUSE
DEATH OR SEVERE PERSONAL INJURY. MAINTAIN
AGE SPACINGS AT TERMINATIONS.
ORIGINAL ELECTRICAL CLEARANCE AND CREEP-
Connect the control wires and power wires to their
appropriate locations on the male plug of the terminal
block, see Figure 2-6. Control power is necessary if
IMPACC communication is required.
Install an appropriate rating plug, see Table
2.1.
2-10.
Plug in the hand held Digitrip OPTIMIZER into the
programming port and set the INCOM address. Then
set the various trip unit current settings using the OPTI-
MIZER, or use the Breaker Interface Module when
INCOM is available. If IMPACC Series 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).
Breaker
Figure 2-5
Securement of Cable (See caution note for
bracing instruction)
Circuit Breaker Reset
After a trip operation, the circuit breaker is reset by mov-
ing the 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
and trip information in the trip’s
memory. It does not affect the operation of the circuit
breaker itself.
No circuit breaker should be
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 breaker.
Inspection
Circuit breakers in service should be inspected
!
WARNING
