Bul. 140U
Q and M-Frame Circuit Breakers
Instruciton Leaflet for Alarm Switch
and Auxiliary Switch Combinaiton
!
WARNING
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 MISAPPLICATION 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 instruction.
1.0 INTRODUCTION
General Information
The alarm (signal)/ lockout switch (ASL switch) (Figure
1-1) is attached to a plug-in module available in the following combinations:
or two ASL switches
·· One
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,
double-throw (SPDT) switches. Each SPDT switch has
a make (alarm) and a break (lockout) contact; it is
40752-076(1) Effective 4/02
Figure 1-1 Alarm (Signal)/ Lockout Switch Installed in LFrame Circuit Breaker
mounted so that the switch actuator arm is controlled by
the circuit breaker operating mechanism cradle.
When the circuit breaker is in the ON or Off position, the
cradle holds the make contact open and the break contact closed. 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 contact-closed position, the “a” contact of each
Page 2
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.
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, 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.
NOTICE
No more than three pigtail leads can be routed
through the rear trough in the circuit breaker base.
When the walking beam interlock is used with the
circuit breaker, the rear trough cannot be used for
accessory pigtail leads.
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 ➀➁➂
Maximum
Voltage
(V)
Freq
Maximum
Current
(A)
Dielectric
Withstand
Voltage (V)
600
125
250
50/60 Hz
DC
DC
6
0.5➃
0.25➃
2500
➀ 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.
➃ Non-inductive load
40752-076(1) Effective 4/02
2.0 INSTALLATION
NOTICE
The ASL switch(es) accessory combination can be
field-installed in circuit breakers Q and M-Frame.
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
listing becomes invalid and the label should be
removed.
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.
The ASL switch (shown in kit form in Figure 2-1) and
accessory combination, is installed in the right or left
accessory mounting cavity of a 2-, 3-, or 4-pole circuit
breaker with a fixed thermal, adjustable thermal or
electronic trip unit. An auxiliary switch must be installed
in the circuit breaker before the circuit breaker is mounted
in an electrical system. To install the auxiliary switch,
perform the following procedures:
NOTICE
A circuit breaker that is mounted in an electrical
system must be removed to install the accessory.
To ensure correct accessory installation, the circuit
breaker must be placed on a horizontal surface.
Page 3
General Installation
!
2-1.
WARNING
THE VOLTAGES IN ENERGIZED EQUIPMENT CAN
CAUSE DEATH OR SEVERE PERSONAL INJURY.
BEFORE REMOVING A CIRCUIT BREAKER
INSTALLED IN AN ELECTRICAL SYSTEM, MAKE
SURE THE CIRCUIT BREAKER IS SWITCHED TO
THE OFF POSITION AND THERE IS NO VOLTAGE
PRESENT WHERE WORK IS TO BE PERFORMED.
SPECIAL ATTENTION SHOULD BE PAID TO
REVERSE FEED APPLICATIONS TO ENSURE NO
VOLTAGE IS PRESENT.
NOTICE
Steps 2-1 through 2-8 and 2-11 through 2-17 are for
general installation and apply to the ASL switch and
the accessory combination. Step 2-9 covers installation of the accessory combination.
Figure 2-1 Alarm (Signal)/Lockout Switch Kit
NOTICE
Molded case switch trip units are not equipped with
a Push-to-Trip button. For molded case switches,
omit step 2-3.
2-2.
Disconnect and remove circuit breaker from
installation and terminal connections.
2-3.
Press PUSH-TO-TRIP button to trip operating
mechanism and check handle moves to trip
position with white colored indicator visible in
escutcheon window.
2-4.
Remove circuit breaker cover screws and covers.
NOTICE
To install accessory, circuit breaker must be in
tripped position
2-5.
For high instantaneous trip-type (catalog suffix K
designation) molded case switches, find
recessed hole in either of the trip unit outer poles
normally intended for intermediate plunger
(Figure 2-4). Push a fine point implement in one
hole to trip the molded case switch.
2-6.
Remove interphase barrier between center pole
and pole in which accessory is to be mounted
(Figure 2-2).
2-7.
Install replacement interphase barrier (supplied
with kit) in base (Figure 2-2).
For all combinations of accessories, leads from the
inner accessory switch must go to the wiring trough
nearest the line end of the circuit breaker. For a double or triple combination, leads from the outer accessory switch must go to the center trough. Pigtail
leads exiting in this manner should be eased through
trough as mounting bracket is inserted into trip unit
retaining slots. Use center trough also for leads exiting the side of the circuit breaker.
2-8.
40752-076(1) Effective 4/02
Switch circuit breaker to OFF position.
Route wiring to meet installation requirements
(see Figure 2-3).
Page 4
!
Accessory Combination Installation
CAUTION
2-10.
Install accessory combination switch as
described in the following steps:
LEADS SHOULD BE FORMED AND ROUTED TO
CLEAR ALL MOVING PARTS WHEN ACCESSORY IS
PROPERLY INSTALLED. LEADS COULD BE DAMAGED IF IN CONTACT WITH MOVING PARTS.
a. Remove barrier from trip unit accessory
mounting slots in pole being used for accessory (Figure 2-4).
NOTICE
b. Put tip of ASL switch actuator arm through
slot in interphase barrier and under cradle
extension.
c.
For all combinations of accessories, leads from
inner accessory switch must go to the wiring trough
nearest line end of circuit breaker. For a double or
triple combination, leads from the outer accessory
switch must go to center trough.
d. Slide accessory combination mounting
bracket into slots until retaining clip snaps
into trip unit. For terminal block assemblies,
slide terminal block into mounting slot on
side of base as accessory combination is
being positioned.
Alarm (Signal)/Lockout Switch Installation
2-9.
Turn accessory combination mounting
bracket to line up with slots in trip unit.
Insert the ASL switch as described in the following steps:
e. If required, complete routing of leads to
opposite side through rear wiring trough.
a. Remove barrier from trip unit accessory
mounting slots in pole being used for accessory (Figure 2-4).
f.
b. Put tip of actuator arm through slot in interphase barrier and under cradle extension
(see Figure 2-5).
For double auxiliary switch pigtail leads,
attach wire marking labels to bundle of
three leads for each switch. (Markers designated 1 and 2 are provided if required.)
General Installation
c.
Turn ASL switch mounting bracket to line up
with slots in trip unit.
d. Slide ASL switch mounting bracket into
slots until retaining clip snaps into trip unit.
For terminal block assemblies, slide terminal block into mounting slot on side of base
as plug-in module is being positioned.
e. If required, complete routing of leads to
opposite side through rear wiring trough.
f.
For double ASL switch with pigtail leads,
attach wire marking labels to bundle of
three leads for each switch. (Markers designated 1 and 2 are provided.)
g. For ASL/auxiliary switch accessory combinations with pigtail leads, attach wire marking labels to bundle of three leads for each
switch. (Markers designated A, B and C are
provided if required.)
40752-076(1) Effective 4/02
!
CAUTION
WHEN INSTALLING CIRCUIT BREAKER MAIN
COVER, MAKE SURE THAT ALL INTERNAL PARTS
ARE IN PLACE:
HANDLE BARRIER IS POSITIONED SO
· SLIDING
THAT THE HANDLE OPENING IS ALIGNED WITH
THE HANDLE.
· ALL LEADS ARE CLEAR OF THE COVER.
2-11.
With circuit breaker handle in TRIPPED position
and accessory pigtail leads (if used) routed as
required, install circuit breaker covers. Secure
with pan-head cover screws. Torque to 20-22
lb-in. (2.26-2.46 N.m.).
Page 5
2-12.
Place accessory labels (supplied with kit) on circuit breaker (Figure 2-7).
NOTICE
NOTICE
For molded case switches, omit step c.
c.
Accessory labels show connection diagram for ASL
switch and/or auxiliary switch contacts. Pigtail
leads are color coded red, black, and blue. Be sure
that accessory terminal marking label is attached
correctly to leads and agrees with related leads at
accessory.
2-13.
Test ASL switch(es) by connecting continuity
tester or ohmmeter across pigtail leads or terminal block connections. Check continuity as follows:
a. Circuit breaker handle OFF Check that make contact(s) are open and
break contact(s) are closed.
b. Circuit breaker handle ON Check that make contact(s) are open and
breaker contact(s) are closed.
Press PUSH-TO-TRIP button “a” contact(s) - open
“b” contact(s) - closed
d. If auxiliary switch(es) fails test, make sure
that auxiliary switch(es) module is properly
seated in trip unit slots. If auxiliary
switch(es) appears to be correctly installed
and the problem persists, contact AllenBradley.
2-15.
Install circuit breaker.
2-16.
Connect accessory leads as required (see
Figure 2-7).
Allen-Bradley assumes no responsibility for malfunctioning accessories installed improperly by the customer.
NOTICE
Replacement Barrier
Supplied with ASL
Switch Kit
For molded case switch circuit breakers, omit step c.
c,
Press PUSH-TO-TRIP button Check that make contact(s) are closed and
break contact(s) are open.
d. If ASL switch(es) fails test, make sure that
module is properly seated in trip unit slots.
If problem persists, contact Cutler-Hammer.
2-14.
Test auxiliary switch(es) (when supplied).
Connect continuity tester or ohmmeter across
pigtail leads or terminal block connections.
Check continuity as follows:
a. Circuit breaker handle OFF “a” contact(s) - open
“b” contact(s) - closed.
b. Circuit breaker handle ON “a” contact(s) - closed
“b” contact(s) - open
Remove
Interphase
Barrier
Figure 2-2 Interphase Barrier Replacement
40752-076(1) Effective 4/02
Page 6
Rear Exiting Leads
(Preferred)
Trip
Unit
Terminal Block
Recessed
Hole
Trip Unit
Barrier
Figure 2-4 Trip Unit Barrier Removal
ASL Switch Module
Position ASL Switch
Operating Arm Under
Cradle Extension
ASL Switch
Actuator Arm
Side Exiting Leads
Opposite-Side
Exiting Leads
Figure 2-3 Accessory WIring Options
Cradle
Extension
Slot in
Replacement
Interphase
Barrier
ASL Switch
Operating Arm
Figure 2-5 Alarm (Signal)/ Lockout Switch Installation
40752-076(1) Effective 4/02
Page 7
ASL Switch
and Auxiliary
Switch
Operating
Arm
Accessory
Combination
Module Position
ASL Switch
Operating Arm
Under Cradle
Extension
Auxiliary
Switch
Pigtail Leads
Blue
Red
Make
(Alarm)
a
Black
ASL Switch
Break
(Lockout)
Red
b
Blue
Leads Are Bundled and
Tagged “B”
Leads Are Bundled and
Tagged “A”
Terminal Block
Blue
Make
(Alarm)
Black
Cradle
Extension
Break
(Lockout)
Red
Slot in
Replacement
Barrier
Figure 2-6 Accessory Combination Installation
Modification
Label
Terminal Block
Connection Diagram
Label (When Used)
Pigtail
Connection
Diagram
(When Used)
Accessory
Identification
Label
Figure 2-7 Preferred Mounting Locations for Accessory
Nameplate Labels
40752-076(1)Effective 4/02
ASL Switch
Red
Al
a
Com
Lo
a
Black
b
c
b
Blue
Auxiliary Switch
Figure 2-8 Alarm (Signal)/Lockout Switch - Auxiliary
Switch Connection Diagram
Page 8
40752-076(1) Effective 4/02
Printed in U.S.A./TQC
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