Rockwell Automation 140U Q and M-Frame Circuit Breakers Installation of Q-Frame Circuit Breakers - Manual (Page 4)

Page 4
CAUTION
WHEN ALUMINUM CONDUCTORS ARE USED, THE
APPLICATION OF A SUITABLE JOINT COMPOUND
IS RECOMMENDED TO REDUCE THE POSSIBILITY
OF TERMINAL OVERHEATING. OVERHEATING CAN
CAUSE NUISANCE TRIPPING AND DAMAGE TO THE
CIRCUIT BREAKER.
2-7. Connect line and load conductors and accessory
the circuit breaker is installed, check
all mounting hardware and terminal connecting
hardware for correct torque loading. Torque values
for terminals are given in Table 2-1 and on
the circuit breaker nameplate.
2-9. Install line terminal cover on circuit breaker cover
with mounting screws provided. Torque to 20-22
in. (2.26-2.49
2-10. When step-type terminals are used, terminal
shields (supplied with terminals) must be
installed on the circuit breaker (Fig. 2-4) and
secured using retainer and screws included
with the terminal shield kit. Warning label
supplied with the kit must be attached to the
circuit breaker cover.
WARNING
HAZARDOUS VOLTAGE CONDITIONS CAN CAUSE
DEATH OR SEVERE PERSONAL INJURY. MAINTAIN
AGE SPACINGS AT TERMINATIONS.
ORIGINAL ELECTRICAL CLEARANCE AND CREEP-
Handle Throw Positions
Existing handle mechanisms may be modified
or
replaced. Consult Allen-Bradleyr for additional
information.
Internal Accessories
Only Q-Frame accessories may be used.
External Accessories
Motor operators must be replaced.
Key interlock mounting brackets must be replaced.
Consult Allen-Bradley for additional information.
Terminal Wire Connectors
Terminals must be replaced, see Table 2-1 for
replacement types.
Other
Unless noted above, all other physical characteristics
are the same.
Handle
Position
Indicator
Color: Red - ON
White - TRIP
International
Symbols
- OFF
I Green - OFF (Reset)
I
PUSH-TO-TRIP
Button
Thermal- Places)
Magnetic
Trip Unit
Fig. 4- 1 Circuit Breaker Manual Controls
40752-078(1) Effective 5/02
Panel Escutcheon Cutout Sizes
Existing cutouts must be modified to agree with
requirements shown in Fig. 2-3.