Rockwell Automation 140U N-Frame User Manual
.
CONTACT WITH ENERGIZED EQUIPMENT CAN
RESULT IN DEATH, SEVERE PERSONAL INJURY,
OR SUBSTANTIAL PROPERTY DAMAGE. DO NOT
ATTEMPT TO INSTALL OR PERFORM
MAINTENANCE ON EQUIPMENT WHILE IT IS ENERGIZED. 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 MIS-
APPLICATION OR MISINSTALLATION OF ITS
PRODUCTS.
The user is cautioned to observe all recommendations,
warnings, and cautions relating to the safety of personnel and equipment as well as all general and local health
and safety laws, codes, and procedures.
The recommendations and information contained herein
are based on Allen-Bradley experience and judgement,
but should not be considered to be all-inclusive or
covering every application or circumstance which may
arise. If any questions arise, contact Allen-Bradley for
further information or instructions.
1. INTRODUCTION
WARNING
Fig. 1-1. Alarm Switch Installed in N-Frame Breaker
N-Frame Circuit Breaker
Installation Instructions for Alarm Switch and
Alarm Auxiliary Switch Combination
General Information
The alarm (signal)/lockout switch (ASL switch) (Fig. 1-1)
is attached to a plug-in module available in the following
combinations:
•
One or two ASL switches
•
One auxiliary switch and one ASL switch
•
Two auxiliary switches and one ASL switch
The plug-in module is mounted in slots in the top of the
trip unit and occupies the accessory mounting cavity in
the circuit breaker frame. The ASL switch provides
remote signaling and interlocking when the circuit breaker trips; it consists of one or two single-pole, doublethrow (SPDT) switches. Each SPDT switch has a make
(alarm) and a break (lockout) contact; it is mounted so
that the switch actuator arm is controlled by the position
of the circuit breaker crossbar.
When the circuit breaker is in the ON or OFF position,
the crossbar allows the make contact to open and the
break contact to close. When the circuit breaker is in the
tripped position, the make contact is closed and the
break contact is open. Any type of trip operation (for
example, automatic trip, shunt trip, or undervoltage
release) actuates the ASL switch.
The auxiliary switch(es) in the combination accessory
indicates circuit breaker contacts status, and is used for
remote signaling and system interlocking purposes.
Each SPDT switch has one "a" and one "b" contact. The
plug-in module is mounted in slots in the top of the trip
unit; it occupies the accessory cavity in the circuit breaker frame, and is positioned so that the switch actuator is
operated by the crossbar. When the crossbar is in the
contacts-closed position, the "a" contact of each SPDT
switch is closed and the "b" contact is open. When the
crossbar is in the tripped or contacts-open position, the
"a" contact is open and the "b" contact is closed.
Table 1-1 lists electrical rating data for the auxiliary switch.
For this publication, the term circuit breaker shall also
include molded case switch and motor circuit protector.
Bul. 140U
40752-094 (1) Effective 04/02
Where local codes and standards permit and UL listing
is not required, internal accessories can be field
installed in sealed circuit breakers. In this case, UL list
ing becomes invalid and the label should be removed.
File E7819.
Before attempting to install the ASL switch or accessory combination, check that the catalog number is
correct as ordered and that the rating of the accessory(s) satisfies the job requirements.
Depending on the model ordered, connections for the
ASL switch and auxiliary switch contacts are in one of
four forms. The standard wiring configuration is pigtail
leads exiting the rear of the base directly behind the
accessory. Optional configurations include a terminal
block mounted on the same side of the base as the
accessory, leads exiting the side of the base where the
accessory is mounted, and leads exiting the rear of the
base on the side opposite the accessory. The 18-inch
long pigtail leads are color coded for identification; identification labels are provided for pigtail leads and terminal block points. For allowable locations of all accessories, refer to Selection Guide.
No more than three pigtail leads can be routed
through the rear trough in the circuit breaker base.
This instruction leaflet (IL) gives detailed procedures for
installing the ASL switch and ASL switch/auxiliary switch
combination (accessory combination).
Table 1-1. Alarm (Signal)/Lockout and Auxiliary Switch
Electrical Rating Data ①➁➂
Maximum Freq Maximum Dielectric
Voltage Current Withstand
(V) (A) Voltage (V)
600 50/60 Hz 6 2500
125 DC 0.5➃
250 DC 0.25➃
① Endurance- 400 electrical operations plus 5600
mechanical operations
➁ Pigtail wire size - No. 18 AWG (0.82 mm)
➂ Terminal block is listed for use with one or two No. 18 to
No. 14 AWG solid or stranded copper wires. Torque is
7 Ib-in (0.8 N.m)
➃ Non-inductive load
2. INSTALLATION
The ASL switch(es) and accessory combination can be
field-installed in N-Frame circuit breakers.
Page 2
NOTICE
NOTICE
Fig. 2-1. Alarm (Signal) Lockout Switch Kit
Plug-in Module with
Pigtail Leads (single
ASL Switch Shown)
Accessory
Identification
Label
Connection
Diagram Label
(Pigtail Lead
Label Shown)
The ASL switch (shown in kit form in Fig. 2-1) and accessory
sory combination, is installed in the right or left accessory
mounting cavity of a 2-, 3-, or 4-pole circuit breaker. An
auxiliary switch must be installed in the circuit breaker
tem. To install the auxiliary switch, perform the following
before the circuit breaker is mounted in an electrical sys-
procedures:
40752-094 (1) Effective 04/02
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