Allen-Bradley N-Frame CB Alarm Switch and Alarm Auxiliary Switch Combination Installation Instructions
Allen-Bradley N-Frame CB Alarm Switch and Alarm Auxiliary Switch Combination is a versatile accessory that can be used to remotely signal and interlock circuit breaker operations. It comes in various configurations with one or two alarm/lockout switches, and can be combined with auxiliary switches to indicate circuit breaker status. This allows for integration into larger systems and enhanced monitoring capabilities. It is compatible with N-Frame circuit breakers and can be field-installed for both new and existing installations.
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Bul. 140U N-Frame Circuit Breaker Installation Instructions for Alarm Switch and Alarm Auxiliary Switch Combination 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 instructions. 1. INTRODUCTION General Information The alarm (signal)/lockout switch (ASL switch) (Fig. 1-1) is attached to a plug-in module available in the following combinations: or two ASL switches • One auxiliary switch and one ASL switch • One • 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. Fig. 1-1. Alarm Switch Installed in N-Frame Breaker . 40752-094 (1) Effective 04/02 Page 2 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. Plug-in Module with Pigtail Leads (single ASL Switch Shown) Accessory Identification Label NOTICE 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). Connection Diagram Label (Pigtail Lead Label Shown) Table 1-1. Alarm (Signal)/Lockout and Auxiliary Switch Electrical Rating Data ①➁➂ 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 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 NOTICE The ASL switch(es) and accessory combination can be field-installed in N-Frame circuit breakers. 40752-094 (1) Effective 04/02 Fig. 2-1. Alarm (Signal) Lockout Switch Kit 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. 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 sysprocedures: Page 3 NOTICE 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. General Installation 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 . PigtaiI 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. 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. 2-5. Route wiring to meet installation requirements (see NOTICE Fig. 2-2). CAUTION 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. 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 ASL switch. Step 2-10 covers installation of the accessory combination. For new circuit breaker installation, the trip unit must be installed in circuit breaker before attempting to install an ASL switch or accessory combination. NOTICE 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. Alarm (Signal)/Lockout Switch Installation 2-1. Switch circuit breaker to OFF position. 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.l 2-4. Remove circuit breaker cover screws and covers. 40752-094 (1) Effective 04/02 2-6. Insert the ASL switch as described in the following steps (see Fig. 2-3): a. Turn ASL switch mounting bracket to line up with slots in trip unit. Page 4 b. 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. c. If required, complete routing of leads to opposite side through rear wiring trough. d. 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.) e. For ASL/auxiliary switch accessory combinations with pigtail leads, attach wire marking labels to bundle of three leads for each switch. (Markers designated A and B are provided if required. ) Accessory Combination Installation 2-7. Install accessory combination switch as described in the following steps (see Fig. 2-4): a. Turn accessory combination mounting bracket to line up with slots in trip unit. b. 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. c. If required, complete routing of leads to opposite side through rear wiring trough. d. 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.) CAUTION WHEN INSTALLING CIRCUIT BREAKER MAIN COVER, MAKE SURE THAT ALL INTERNAL PARTS ARE IN PLACE: • ALL LEADS ARE CLEAR OF THE COVER. 2-8. With circuit breaker handle in TRIPPED position and acces- sory pigtail leads (if used) routed as required, install circuit breaker covers. Secure with panhead cover screws. Torque large screws to 35-45 Ib-in. (4.0-5.0 N.m.) and small screws to 24-30 lb-in (2.7-3.4 N.m). 2-9. Place accessory labels (supplied with kit) on circuit breaker (see Fig. 2-5). 40752-094 (1) Effective 04/02 NOTICE 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. 2-10. 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. 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 Allan-Bradley. 2-11. 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" contacts(s)- open "b" contact(s)- closed. b. Circuit breaker handle ON "a" contact(s) - closed "b" contact(s) - open c. Press PUSH-TO-TRIP button "a" contact(s)- open "b" contact(s) - closed Page 5 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 Allen-Bradley. ASL Switch 2-12. Install circuit breaker. 2-13. Connect accessory leads as required (see Fig. 2-6). Allen-Bradley assumes no responsibility for malfunctioning accessories installed improperly by the customer. ASL Switch Actuator Arm Figure 2-3 Alarm (Signal) Lockout Switch Installation Rear Exiting Leads (Preferred) Terminal Back Side Exiting Leads Opposite-Side Exiting Leads Figure 2-2 Accessory Wiring Options Auxiliary Switch ASL Switch Actuator Arm Figure 2-4 Accessory Combination Installation 40752-094 (1) Effective 04/02 Page 6 Modification Label Pigtail Leads ALS Switch Blue Make (Alarm) Red a Black Break (Lockout) b Red Blue Leads are Bundled and Tagged “B” Leads are Bundled and Tagged “A” Terminal Block Pigtail Connection Diagram (When Used) Accessory Identification Label Terminal Block Connection Diagram Label (When Used) Figure 2-5 Preferred Mounting Locations for Accessory Nameplate Labels 40752-094 (1) Effective 04/02 Printed in U.S.A./TQC Blue Make (Alarm) Black Break (Lockout) Red ASL Switch Auxiliary Switch Figure 2-6 Alarm (Signal)/Lockout Switch - Auxiliary Switch Connection Diagram ">

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Key features
- Remote signaling
- Interlocking capability
- Multiple configurations
- Auxiliary switch option
- Field-installable
- N-Frame circuit breaker compatibility
Frequently asked questions
The maximum voltage rating is 600V, according to the viewed document.
This accessory can accommodate up to two auxiliary switches, as stated in the viewed document.
The wire size for the pigtail leads should be No. 18 AWG (0.82 mm) as specified in the viewed document.