Rockwell Automation Allen-Bradley 140U Series Installation Instructions

Installation Instructions for I-Frame Molded Case
Circuit Breakers and Molded Case Switches
DO NOT ATTEMPT TO INSTALL OR PERFORM
MAINTENANCE ON EQUIPMENT WHILE IT IS ENER-
GIZED. DEATH, SEVERE PERSONAL INJURY
SUBSTANTIAL PROPERTY DAMAGE CAN RESULT
FROM CONTACT WITH ENERGIZED EQUIPMENT.
ALWAYS VERIFY THAT NO VOLTAGE IS PRESENT
BEFORE PROCEEDING WITH THE TASK, AND
ALWAYS FOLLOW GENERALLY ACCEPTED SAFETY
PROCEDURES.
ALLEN-BRADLEY IS NOT LIABLE FOR THE
MISAPPLICATION OR MISINSTALLATION OF
PRODUCTS.
The user is cautioned to observe all recommendations,
warnings and cautions relating to the safety of personnel
and equipment, as well
as
and safety laws, codes, and procedures.
The recommendations and information contained herein
are based on Allen-Bradley experience and judgment,
but should not be considered to be all-inclusive or
covering every application or circumstance which may
arise. any questions arise, contact Allen-Bradley for
If
further information or instructions.
Fig, I-Frame Circuit Breaker and
Molded Case Switches
40752-162(1)
Effective 7/07
WARNING
OR
ITS
general and local health
all
The 140U-I-Frame circuit breakers (Fig. 1-1)
are rated from 15A to 225A
current and are available
circuit breakers and molded case switches.
Circuit breakers are listed in accordance with
Underwriters Laboratories, Inc. Standard UL489,
and satisfy the (P1) requirements of the
International Electrotechnical Commission
Recommen dation No. IEC 157-1. Molded case
switches are listed in accordance with UL1087.
For this publication, the term circuit breaker also
2. INSTALLATION
The installation procedure consists of inspecting and
mounting the circuit breaker, connecting and torquing the
.
line and load terminations, and attaching terminal shields
or barriers, when supplied.
perform the following steps:
Note:
The I-Frame circuit breakers are factory sealed. UL489
requires that internal accessories be installed at the
factory. Where local codes and standards permit and
UL listing is not required, internal accessories can be
field installed. Accessory installation should be done
before the circuit breaker is mounted and connected.
Mounting hardware and unmounted terminations (where
required) are supplied in separate packages.
Make sure that the circuit breaker is suitable for the
2-1.
installation comparing nameplate data with system
by
requirements. Inspect the circuit breaker for completeness
and check for damage before mounting.
BEFORE MOUNTING THE CIRCUIT BREAKER IN AN
ELECTRICAL SYSTEM, MAKE SURE THERE IS NO
VOLTAGE PRESENT WHERE WORK IS TO BE PER-
FORMED. THE VOLTAGES IN ENERGIZED EQUIP-
MENT CAN CAUSE INJURY OR DEATH.
Bul. 140U
continuous
as thermal-magnetic
install the circuit breaker,
To