Instruction Leaflet I.L. 29C148B
Effective Date 7/2010
Installation Instructions for Shunt Trip for NDB, ND, HND, NDC, NW, HNW, NWC Circuit Breakers, Series C Molded Case Switches, and Motor Circuit Protectors (HMCP)
CONTACT WITH ENERGIZED EQUIPMENT CAN RESULT
IN DEATH, SEVERE PERSONAL INJURY, OR SUBSTAN-
TIAL PROPERTY DAMAGE. DO NOT ATTEMPT TO IN-
STALL OR PERFORM MAINTAINANCE ON EQUIPMENT
WHILE IT IS ENERGIZED. ALWAYS VERIFY THAT NO VOLT-
AGE IS PRESENT BEFORE PROCEEDING WITH THE TASK,
AND ALWAYS FOLLOW GENERALLY ACCEPTED SAFETY
PROCEDURES.
EATON 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 Eaton 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 Eaton for further information or instructions.
Fig. 1-1 Shunt Trip Installed in N-Frame Circuit Breaker
General Information
The shunt trip (Fig. 1-1) provides remote controlled electrical tripping for the circuit breaker. It consists of an intermittent rated solenoid with a tripping plunger and a cutoff switch attached to a plug-in module. The plug-in module is mounted in slots in the top of the trip unit and occupies the accessory cavity in the circuit breaker frame. When the solenoid is energized, the plunger extends and presses against an intermediate plunger which operates the trip bar in the trip unit. As the circuit breaker trips, the crossbar presses against the cutoff switch operating arm to open the cutoff switch, disconnecting power to the solenoid and preventing coil burn out .
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Effective Date 7/2010
IF ENERGY IS APPLIED TO SHUNT TRIP
LEADS, DO NOT ATTEMPT TO RESET AND
CLOSE THE CIRCUIT BREAKER. ATTEMPT-
ING TO CLOSE THE CIRCUIT BREAKER WHILE
ENERGIZED WILL RESULT IN A “SHOCKOUT”
CONDITION.
Table 1-1 lists application and electrical operating rating data for the shunt trip.
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 shunt trip are in one of four forms. The standard wiring configuration is pigtail leads exiting the rear of the base directly behind the shunt trip. 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.
This instruction leaflet (I.L.) gives detailed procedures for installing the shunt trip.
2. Installation
Note: The shunt trip can be field-installed in ND,
Hnd, and NDC breakers under UL File E64983.
The shunt trip can be field-installed in NW, HNW, and NWC circuit breakers.
For sealed circuit breakers (NDB), Underwriters
Lab-oratories Inc. UL 489 requires that internal accesso-ries be installed at the factory. The shunt trip is listed for factory installation under UL File
E7819.
Where local codes and standards permit and UL list-ing is not required, internal accessories can be filed installed in sealed circut breakers. In this case, UL listing becomes invalid and the label should be removed.
Before attempting to install the shunt trip, check that the catalog number is correct as ordered and that the rating of the accessory satisfies job requirements .
The shunt trip, shown in kit form in Fig. 2-1, is installed in the left accessory mounting cavity of a 2, 3, or 4-pole circuit breaker. A shunt trip must be installed in the circuit breaker before the circuit breaker is mounted in an electrical system.
To install the shunt trip, perform the following procedures:
Note: A circuit breaker that is mounted in an electri-cal system must be removed to install thee accessory. To ensure correct accessory installation, the circuit breaker must be placed on a horizontal surface .
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 AT-
TENTION SHOULD BE PAID TO REVERSE
FEED APPLICATIONS TO ENSURE NO VOLT-
AGE IS PRESENT.
2-1. Switch circuit breaker to OFF position.
2-2. Disconnect and remove circuit breaker from installation and terminal connections.
2-3. Remove cover screws and covers.
Note: For a shunt trip having rear or opposite-side exiting pigtail leads, thread leads through center trough in side of base before attempting to insert the mounting bracket. 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.
2-4. Route wiring to meet installation requirments.
(see Fig. 2-2.)
CAUTION
LEADS SHOULD BE FORMED AND ROUTED
TO CLEAR ALL MOVING PARTS WHEN AC-
CESSORY IS PROPERLY INSTALLED. PIGTAIL
WIRES COULD BE DAMAGED IF IN CONTACT
WITH MOVING PARTS.
Eaton CorporatIon www.eaton.com
Effective July 2010
Instruction Leaflet I.L. 29C148B
Effective July 2010
IF SHUNT TRIP IS REMOVED FROM CIRCUIT
BREAKER, INTERMEDIATE PLUNGER MUST
ALSO BE REMOVED. FAILURE TO REMOVE
THE INTERMEDIATE PLUNGER CAN RESULT
IN EQUIPMENT DAMAGE.
CAUTION
2-5. Insert shunt trip as described in the following s teps. (Fig. 2-3).
WHEN INSTALLING CIRCUIT BREAKER MAIN
COVER, MAKE SURE THAT ALL INTERNAL
PARTS ARE IN PLACE:
* ALL LEADS ARE CLEAR OF THE COVER.
FAILURE TO KEEP FINGERS AWAY FROM
MOVING PARTS CAN CAUSE PERSONAL
INJURY. WHEN INTERMEDIATE PLUNGER IS
POSITIONED IN TRIP UNIT, CIRCUIT BREAKER
WILL MOVE TO THE TRIP POSITON. CARE
SHOULD BE TAKEN TO KEEP FINGERS CLEAR
OF CIRCUIT BREAKER MECHANISM PARTS
AND HANDLE.
2-7 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 #8 screws to 18-25 lb-in (2.0-2.8 Nm) 1/4-20 to 35-45 lb-in (4.0-5.1 Nm).
2-8 Place accessory labels (supplied with kit) on circuit breaker. (See Fig. 2-5.) a. Trip circuit breaker by pressing intermediate plunger in top of trip unit, and hold plunger in position.
b. Slide shunt trip lug-in module into slots until retaining clip shnaps into trip unit. Cutoff switch actuator must be above the crossbar. 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.
Note: Accessory labels show connection diagram for shunt trip. Pigtail leads are color coded white and yellow.
CONTACT WITH MOVING PARTS CAN CAUSE
PERSONAL INJURY. WHEN CHECKING AC-
CESSORY, DO NOT PUT FINGERS NEAR
MOVING PARTS INSIDE CIRCUIT BREAKER
CASE. SPRINGS CAUSE INTERNAL PARTS TO
MOVE QUICKLY AND WITH FORCE.
2-6. Perform mechanical check of shunt trip after installation: a. With the circuit breaker still electrically isolated, reset the circuit breaker.
b. Using a small flat-blade screwdriver, depress solenoid plunger (Fig. 2-4). Circuit breaker should move to trip position.
c. If mechanical check does not trip circuit breaker, see if shunt trip and intermediate plunger are correctly installed. If shunt trip and intermediate plunger appear to be properly installed and problem persists, contact Eaton .
Fig. 2-1 Shunt Trip Kit
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Fig. 2-2 Accessory Wiring Options
Fig. 2-3 Installing Intermediate Plunger and
Shunt Trip.
4 Eaton CorporatIon www.eaton.com
Fig. 2-4 Screwdriver Depressing Shunt Trip
Solenoid Plunger
2-9 Test cutoff switch. Connect ohmmeter across pigtail leads or terminal block connections.
Check continuity as follows: a. Circuit breaker handle OFF - no continuity b. Circuit breaker handle ON - less than 9000
ohms.
Note: For molded case switches, omit step c.
c. Press PUSH-TO-TRIP button - no continuity.
d. If cutoff switch fails test, make sure that shunt trip module is properly seated in trip unit slots. If problem persists, contact Eaton.
2-10 Install circuit breaker..
2-11 Connect shunt trip as required (see Fig. 2-6).
Eaton assumes no responsability for malfunctioning accessories installed improperly by the customer.
Instruction Leaflet I.L. 29C148B
Effective July 2010
Fig 2-6 Shunt Trip Connection Diagram
Fig. 2-5 Prefered Mounting Locations for Accessory.
Eaton CorporatIon www.eaton.com
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Table 1-1. Shunt Trip Electrical Rating Data
• Average circuit breaker contact total opening time approximately 30 milliseconds, depending on voltage.
• Endurance – 3000 electrical operations plus 1000 mechanical operations.
• Shunt trip can be operated up to a maximum of six times per minute
• Maximum operating voltage – 110% of maximum voltage range rating
• Terminal block is approved for use with one or two No. 18 to No. 14 AWG solid or stranded copper wire.
Torque is 7 lb-in. (0.8 N.m)
Catalog Suffix
Field
Mounting
Kit
Factory
Installed
Application Ratings
Voltage Frequency
Electrical Operating Ratings
Supply
Voltage
Minimum
Operating
Voltage
P
(V) (Hz) (V) (V) (A) rms
At
0.250
(A)
Rms
At
0.033s
(A) VA
03K
05K
11K(1)
14K
18K
23K
26K
03
05
11
14
18
23
26
9-24
9-24
48-60
110-240
380-440
220-250
480-600
48-60
110-125
50/60
DC
50/60
50/60
50/60
DC
50/60
DC
DC
9
12
24
9
12
24
48
60
110
120
127
208
220
240
550
600
48
60
110
120
125
220
250
480
525
380
400
415
440
6.3
7.2
34
77
266
154
336
34
77
7.2
11.6
28
0.71
1.17
0.86
0.98
1.1
2.3
2.4
2.6
0.28
0.31
0.33
0.35
0.06
0.08
0.08
0.10
8.8
12.1
25.4
0.21
0.22
1.4
1.7
1.1
1.2
1.2
Notes:
(1) Suitable for use with Class 1 GFP devices; marking label supplied with field mounting kit.
5.1
8.2
19.8
0.04
0.06
0.06
0.07
0.50
0.83
1.8
0.20
0.22
0.23
0.25
0.61
0.69
0.75
1.6
1.7
46
98
475
79
145
610
24
50
67
83
95
333
374
432
33
42
67
102
121
144
150
46
55
19
32
76
88
95
110
One Minute
Dielectric
Withstand
Voltage (V)
1048
1120
1480
1880
2200
1120
1250
Eaton CorporatIon www.eaton.com
notES
Instruction Leaflet I.L. 29C148B
Effective July 2010
Eaton CorporatIon www.eaton.com
7
I.L. 29C148B
Effective July 2010
Eaton Corporation
Electrical Group
1000 Cherrington parkway
Moon township, pa 15108
United States
877-Etn-CarE (877-386-2273)
Eaton.com
© 2008 Eaton Corporation all rights reserved printed in USa publication no. 6634C82H03
July 2010 powerChain Management is a registered trademark of Eaton Corporation. all other trademarks are property of their respective owners.
