PowerPact H-, J-, and L-Frame
Circuit Breakers
Catalog
0611CT1001 R03/15
2015
Class 0611
CONTENTS
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Page
Catalog Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Automatic Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Motor Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Energy Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Trip Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Accessories for Micrologic™ Trip Units . . . . . . . . . . . . . . . . . . . . . . . . . 107
Accessories and Auxiliaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Circuit Breaker Mounting and Connections . . . . . . . . . . . . . . . . . . . . . . 137
Installation Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Circuit Breaker Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Accessory Dimensional Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Trip Curves. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
PowerPact H-, J-, and L-Frame Circuit Breakers
2
03/2015
™
© 2011–2015 Schneider Electric
All Rights Reserved
PowerPact™ H-, J-, and L-Frame Circuit Breakers
Table of Contents
3
03/2015
© 2011–2015 Schneider Electric
All Rights Reserved
™
SECTION 1: CATALOG NUMBERING ..............................................................................7
PowerPact™ with Micrologic™ Circuit Breakers .......................................................................... 7
Catalog Numbering....................................................................................................................... 8
SECTION 2: GENERAL INFORMATION .........................................................................10
Applications ................................................................................................................................ 10
Mission Critical Circuit Breakers ................................................................................................. 12
Flexible Configurations ............................................................................................................... 14
General Characteristics .............................................................................................................. 15
PowerPact H-, J-, and L-frame Circuit Breaker Trip Units ......................................................... 21
SECTION 3: CIRCUIT BREAKERS .................................................................................23
Dual-Break Rotating Contacts ....................................................................................................23
High Ampere Interrupting Ratings (AIR) ..................................................................................... 23
Internal Operating Mechanism....................................................................................................23
Handle Position Indication .......................................................................................................... 24
Circuit Breaker Ratings............................................................................................................... 24
Special Applications.................................................................................................................... 26
H- and J-Frame Catalog Numbers.............................................................................................. 28
L-Frame Circuit Breaker Catalog Numbers................................................................................. 38
SECTION 4: AUTOMATIC SWITCHES ...........................................................................44
Automatic Switch Functions ....................................................................................................... 44
Specifications.............................................................................................................................. 45
Catalog Numbers........................................................................................................................ 46
SECTION 5: MOTOR CIRCUIT PROTECTION ...............................................................48
General Information .................................................................................................................... 48
Motor Branch Circuit Protection Function ................................................................................... 48
Trip Class of a Overload Relay Device....................................................................................... 49
Asynchronous-Motor Starting Parameters.................................................................................. 49
Motor-Feeder Solutions .............................................................................................................. 49
Electronic Motor Circuit Protectors (AC Only)............................................................................. 51
Micrologic 1.3 M Electronic Trip Units for Instantaneous
Protection Only (L-Frame Circuit Breakers Only) ..................................................................... 54
Micrologic 2.2 M and 2.3 M Electronic Trip Units........................................................................ 55
Indications................................................................................................................................... 56
© 2011–2015 Schneider Electric
All Rights Reserved
PowerPact™ H-, J-, and L-Frame Circuit Breakers
Table of Contents
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™
SECTION 6: ENERGY MANAGEMENT .......................................................................... 60
Energy Management Using the Enerlin’X System ...................................................................... 60
Enerlin’X Communication System Components ......................................................................... 62
Power Meter Functions ...............................................................................................................63
Display Functions........................................................................................................................ 63
Measurement Function ...............................................................................................................64
FDM121 Display.......................................................................................................................... 71
FDM128 Display.......................................................................................................................... 76
SECTION 7: TRIP UNITS ................................................................................................ 82
Available Trip Units ..................................................................................................................... 82
Protection of Distribution Systems ..............................................................................................85
Enerlin’X Communication Wiring System.................................................................................... 94
IFE Ethernet Interface................................................................................................................. 96
IFM Modbus Communication Interface ....................................................................................... 99
I/O Application Module .............................................................................................................. 102
Electrical Asset Manager Configuration Engineering Tool (Ecoreach™).................................. 105
SECTION 8: ACCESSORIES FOR MICROLOGIC™ TRIP UNITS .............................. 107
PowerPact™ H-, J-, and L-Frame Circuit Breakers
Table of Contents
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© 2011–2015 Schneider Electric
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SECTION 9: ACCESSORIES AND AUXILIARIES ........................................................114
Communication Network...........................................................................................................114
Accessory Connections ............................................................................................................ 117
Auxiliary and Alarm Indication Contacts ................................................................................... 117
SDx and SDTAM Modules for Micrologic Trip Units ................................................................. 119
Shunt Trip (MX) and Undervoltage Trip (MN) ........................................................................... 121
Motor Operator.......................................................................................................................... 122
Add-On Ground-Fault Module (GFM) (H- and J-Frame Only) .................................................. 124
Earth Leakage Module (ELM) (H- and J-Frame Only).............................................................. 125
Rotary Operating Handles ........................................................................................................126
Class 9422 Flange-Mounted Variable-Depth Operating Mechanism........................................ 129
Locking Systems....................................................................................................................... 129
Manual Mechanical Interlocking Systems................................................................................. 130
Sealing Accessory .................................................................................................................... 133
Front-Panel Escutcheons.......................................................................................................... 133
Toggle Collars (For Drawout Mounting).................................................................................... 134
Toggle Boot .............................................................................................................................. 134
Handle Extension...................................................................................................................... 134
Circuit Breaker Enclosures and Enclosure Accessories........................................................... 135
SECTION 10: CIRCUIT BREAKER MOUNTING AND CONNECTIONS .........................137
Mounting Configurations........................................................................................................... 137
Unit-Mount Circuit Breakers...................................................................................................... 138
I-Line™ Circuit breakers ........................................................................................................... 139
Connection................................................................................................................................ 143
SECTION 11: INSTALLATION RECOMMENDATIONS ..................................................149
Operating Conditions ................................................................................................................ 149
Installation in Equipment........................................................................................................... 152
Safety Clearances and Minimum Distances ............................................................................. 152
Safety Clearance ...................................................................................................................... 153
Control Wiring ........................................................................................................................... 153
24 Vdc Power Supply Module................................................................................................... 155
SECTION 12: WIRING DIAGRAMS ................................................................................156
© 2011–2015 Schneider Electric
All Rights Reserved
PowerPact™ H-, J-, and L-Frame Circuit Breakers
Table of Contents
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™
SECTION 13: CIRCUIT BREAKER DIMENSIONS ......................................................... 164
SECTION 14: ACCESSORY DIMENSIONAL DRAWINGS ............................................ 187
SECTION 15: TRIP CURVES .......................................................................................... 192
CATALOG NUMBERS .................................................................................................... 258
GLOSSARY ..................................................................................................................... 264
PowerPact™ H-, J-, and L-Frame Circuit Breakers
Catalog Numbering
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© 2011–2015 Schneider Electric
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™
Section 1—Catalog Numbering
PowerPact™ with Micrologic™ Circuit Breakers
The PowerPact H-, J-, and L-frame circuit breakers are designed to protect electrical systems from
damage caused by overloads and short circuits. H- and J-frame circuit breakers are available with
either thermal-magnetic or Micrologic
electronic trip units. L-frame circuit breakers are available with
Micrologic electronic trip units only.
Direct Access to Energy Management
The new generation PowerPact with Micrologic circuit breakers set the standard with direct access to
energy management. Integrated metering enhances their protective functions. For the first time,
Schneider Electric™ users can monitor energy from 15 to 3000 A, offering new performance in a
remarkably compact device.
•
Smart – A meter in every breaker
•
Safe – Combines safety and performance in one compact device
•
Simple – To select, install, and use
Increased energy
availability
Safety and
Protection
Energy measurement
and control
© 2011–2015 Schneider Electric
All Rights Reserved
PowerPact™ H-, J-, and L-Frame Circuit Breakers
Catalog Numbering
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03/2015
™
Catalog Numbering
Table 1: Interrupting Rating
UL
®
/ CSA
®
/ NOM
®
IEC 647-2 Icu/Ics
240 Vac 480 Vac 600 Vac 250 Vdc
1
1250 Vdc ratings only available with PowerPact H or J circuit breakers with thermal-magnetic trip units (not including MCP).
500 Vdc
2
2UL 500 Vdc ratings only available with PowerPact H-, J-, and L-frame circuit breakers with thermal-magnetic trip units (not including MCP).
220/240 Vac 380/440/415 Vac 500/525 Vac 690 Vac 250 Vdc
1
500 Vdc
3
3IEC 500 Vdc rating only available on PowerPact J-frame circuit beakers.
D25 kA 18 kA 14
kA 20 kA — 25/25 kA 18/18 kA 14/14 kA — 20 kA 20 kA
G65 kA 35 kA 18 kA 20 kA 20 kA 65/65 kA 35/35 kA 18/18 kA — 20 kA 20 kA
J100 kA 65 kA 25 kA 20 kA — 100/100 kA 65/65 kA 25/25 kA — 20 kA 20 kA
L125 kA 100 kA 50 kA 20 kA 50 kA 125/125 kA 100/100 kA 50/50 kA — 20
kA 20 kA
R200 kA 200 kA 100 kA — — 150 kA 125 kA 75 kA 20 kA — —
Trip Unit
Micrologic Electronic Trip Units
U31X LI Standard Protection
U33X LSI Standard Protection
U43X LSI plus Ammeter
U44X LSIG plus Ammeter
U53X LSI plus Energy Management
U54X LSIG plus Energy Management
M37X Magnetic Only (L-Frame Only)
M38X Motor Protector Circuit Breaker
S40X 400 A Molded Case Switch (L-Frame Automatic Switch)
S60X 600 A Molded Case Switch (L-Frame Automatic Switch)
F40 400 A L-Frame Only (No Trip Unit)
F60 600 A L-Frame Only (No Trip Unit)
Thermal-Magnetic Trip Units
— Standard Fixed Trip Unit (Suitable for reverse connection)
F06 60 A H-Frame Only (No trip unit)
F15 150 A H-Frame Only (No trip unit)
F25 250 A J-Frame Only (No trip unit)
T Complete Circuit Breaker (Frame + removable trip unit)
S15 150 A Molded Case Switch (H-Frame automatic switch)
S17 175 A Molded Case Switch (J-Frame automatic switch)
S25 250 A Molded Case Switch (J-Frame automatic switch)
C 100% Rated Continuous Current Rating1
M71 30 A H-Frame Motor Circuit Protector (MCP)
M72 50 A H-Frame Motor Circuit Protector (MCP)
M73 100 A H-Frame Motor Circuit Protector (MCP)
M74 150 A H-Frame Motor Circuit Protector (MCP)
M75 250 A J-Frame Motor Circuit Protector (MCP)
D81 500 Vdc 150–175 A J-Frame Molded Case Circuit Breaker
D82 500 Vdc 200–250 A J-Frame Molded Case Circuit Breaker
D87 500 Vdc 30–70 A H-Frame Molded Case Circuit Breaker
Dxx 500 Vdc 300A–1200A L-Frame Molded Case Circuit Breaker
(Refer to Table 7 for details)
R 100% Rated Continuous Current Rating Complete Circuit Breaker
(Frame + removable trip unit)
1100% ratings valid for:
3P H/J frame unit mount and busbar connection
3P/4P L-frame 250 A and 400 A unit mount
3P L-frame 250 A and 400 A I-Line
I-Line Phasing
— ABC (3P)
6CBA (3P)
1AB(2P)
2AC(2P)
3BA(2P)
4BC(2P)
5CA(2P)
6CB(2P)
Frame
H H-Frame
JJ-Frame
L L-Frame
Poles
22P
33P
4 4P
Amperage
060 60 A
100 100 A
150 150 A
250 250 A
400 400 A
600 600 A
000 Switch or
Frame only
Voltage
6600 Vac
4 480 Vac
Terminations
L Lugs Line/Load Side
M Lugs Line Side
P Lugs Load Side
FBus Bar
AI-Line
S Rear Connected
N Plug-in
D Drawout
K Reverse I-Line
Performance Level (kA) (See Table 1)
Accessory Suffix Code (See Table 2)
– J L L 3 6 250 W T – – – – –
Brand
_ Square D
N Schneider
Electric
Mission Critical
(J- and L-frame with D, G, J,
and L interrupting ratings)
PowerPact™ H-, J-, and L-Frame Circuit Breakers
Catalog Numbering
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© 2011–2015 Schneider Electric
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™
Table 2: Factory Installed Accessory Suffix Codes (Building Sequence as Listed) and Field-Installable Kit Number
(1) Communication Networks
1
(5) Shunt Trip (6) Undervoltage Release UVR Voltage
Suffix Description Kit No. Suffix Kit No. Suffix Kit No.
EA NSX Cord 1.3 m, V 480 V S434201 SK S29384 UK S29404 24 Vac
EB NSX Cord 3 m, V 480 V S434202 SL S29385 UL S29405 48 Vac
ED NSX Cord 1.3 m, V > 480 V S434204 SA S29386 UA S29406 120 Vac
EE NSX Cord 3 m, V > 480 V S434303 SD S29387 UD S29407 208/277 Vac
EG4BSCM + NSX Cord 1.3 m, V 480 V S434201BS SH S29388 UH S29408 380/480 Vac
EH4BSCM + NSX Cord 3 m, V 480 V S434202BS SJ S29389 UJ S29409 525/600 Vac
EK4BSCM + NSX Cord 1.3 m, V > 480 V S434204BS SN S29382 UN S29402 12 Vdc
EL4BSCM + NSX Cord 3 m, V > 480 V S434303BS SO S29390 UO S29410 24 Vdc
EN 24 Vdc Power Supply Terminal Block S434210 SU S29391 UU S29411 30 Vdc
(2) Indication Contacts SP S29392 UP S29412 48 Vdc
SV S29383 UV S29403 60 Vdc
Suffix Description Kit No. SR S29393 UR S29413 125 Vdc
VSDX S429532 SS S29394 US S29414 250 Vdc
SDTAM (motor only trip units) S429424 (6) Communicating Motor Operator
5
(3) Auxiliary Switch Suffix Voltage H-Frame J-Frame L-Frame
Suffix Contacts Kit No. Kit Qty. NC 220/240 Vac S429441 S431549 S432652
AA 1A/1B Standard S29450 1 (7) Motor Operator
AB 2A/2B Standard S29450 2
AC 3A/3B Standard (L-frame only) S29450 3 Suffix Voltage H-Frame J-Frame L-Frame
AE 1A/1B Low-Level S29452 1 ML 48/60 Vac S29440 S31548 S432639
AF 2A/2B Low-Level S29452 2 MA 120 Vac S29433 S31540 S432640
AG 3A/3B Low Level (L-frame only) S29452 3 MD 277 Vac S29434 S31541 S432641
(4) Alarm/Overcurrent Trip Switch MF 380/415 Vac — — S432642
MH 440/480 Vac S29435 S31542 S432647
Suffix Switch Kit No. Kit Qty. MO 24/30 Vdc S29436 S31543 S432643
PowerPact L-Frame and PowerPact H/J-Frame with Micrologic 5/6 trip units MV 48/60 Vdc S29437 S31544 S432644
BC Alarm Switch S29450 1 MR 110/130 Vdc S29438 S31545 S432645
BH Alarm Switch Low-Level S29452 1 MS 250 Vdc S29439 S31546 S432646
BD Overcurrent Trip Switch, Standard
SDE Actuator
S29450
S29451
1
1(8) Rotary Handle
BJ Overcurrent Trip Switch, Low-Level
SDE Actuator
S29452
S29451
1
1
Suffix Handle Type (color) H/J-Frame L-Frame
RD10 Direct Mount (black) S29337 S32597
BE Alarm Switch and
Overcurrent Trip Switch, Standard S29450 2 RD20 Direct Mount (red) S29339 S32599
RE10 Extended Door Mount (black) S29338 S32598
BK Alarm Switch and
Overcurrent Trip Switch, Low-Level S29452 2 RT10 Telescoping (black) S29343 S32603
RE20 Extended Door Mount (red) S29340 S32600
PowerPact H/J-Frame with Thermal-Magnetic or Micrologic 1/2/3 trip units (9) Wire Harnesses2
BC Alarm Switch S29450 1
BH Alarm Switch Low-Level S29452 1 Suffix Harness2Kit No.
BD Overcurrent Trip Switch, Standard
SDE Actuator
S29450
S29451
1
1
YH3 ZSI Wire Harness, H/J Frame S434300
YH3 ZSI Wire Harness, L-Frame S434301
BJ Overcurrent Trip Switch, Low-Level
SDE Actuator
S29452
S29451
1
1
YH2 ENCT Wire Harness S434302
YH1 OF Wire Harness S434500
BE
Alarm Switch and
Overcurrent Trip Switch, Standard
SDE Actuator
S29450 2 YH1 SD/SDE Wire Harness S434501
YH1 SDx/SDTAM Wire Harness S434502
S29451 1 YH1 MN Wire Harness S434503
BK
Alarm Switch and
Overcurrent Trip Switch, Low-Level S29452 2 YH1 MX Wire Harness S434504
YH1 Motor Operator Wire Harness S434506
SDE Actuator S29451 1 YH1 Communicating Motor Operator Wire Harness S434507
1
Except for 24 Vdc Power Supply Terminal Block, installation requires IFM (STRV00210) for
Modbus communication and/or FDM (STRV00121) for external display.
2
YH1 = all installed accessories but ZSI and ENCT
YH2 = ENCT and all installed accessories
YH3 = ZSI and all installed accessories
YH4 = ZSI, ENCT and all installed accessories
3
I-Line wire harness included for communication network accessories.
Optional wire harness for unit mount requires YH1 suffix.
4
If using with a motor operator, requires Communicating Motor Operator (suffix NC).
5
Requires Micrologic trip unit U43, U44, U53, or U54 and communication accessories EG, EH, EK,
or EL.
YH13NSX Wire Harness S434508
YH4 ENCT and ZSI Wire Harnesses —
YH1324 Vdc Power Supply Wire Harness S434505
(10) Handle Padlocks
Suffix Padlock Type H/J-Frame L-Frame
YP Handle Padlock, ON or OFF S29371 S32631
YQ Handle Padlock, OFF Only S37422 NJPAF
YQ Handle Padlock, OFF Only 2P H2PHLA —
© 2011–2015 Schneider Electric
All Rights Reserved
PowerPact™ H-, J-, and L-Frame Circuit Breakers
General Information
10
03/2015
™
Section 2—General Information
The PowerPact™ H-, J-, and L-frame circuit breakers are designed to protect electrical systems from
damage caused by overloads and short circuits. H- and J-frame circuit breakers are available with
either thermal-magnetic or Micrologic™ electronic trip units. L-frame circuit breakers are available with
Micrologic electronic trip units only.
H- and J-frame circuit breakers with thermal-magnetic trip units contain individual thermal (overload)
and instantaneous (short circuit) sensing elements in each pole. The amperage ratings of the thermal
trip elements are calibrated at 104°F (40°C) free air ambient temperature. Per the National Electric
Code
®
(NEC
®
) and the Canadian Electrical Code, standard circuit breakers may only be applied
continuously at up to 80% of their rating. Circuit breakers rated for 100% operation are available but
require specially-designed enclosures and 194°F (90°C) rated wire.
Devices with the Micrologic electronic trip unit provide adjustable protection settings for greater system
flexibility. In addition to electronic protection, Micrologic trip units allow users to monitor both energy
and power. Through direct access to in-depth information and networking using open protocols,
PowerPact circuit breakers with Micrologic trip units let operators optimize the management of their
electrical installations. Far more than just a circuit breaker, these devices are a measurement and
communication tool ready to meet energy-efficiency needs through optimized power requirements,
increased energy availability, and improved installation management.
Applications
PowerPact H-, J-, and L-frame circuit breakers offer high performance and a wide range of
interchangeable trip units to protect most applications.
Electronic trip units provide highly accurate protection with wide setting ranges and can integrate
measurement, metering and communication functions. They can be combined with the front display
module (FDM121) to provide functions similar to a power meter.
Table 3:Applications
Power Meter
PowerPact H-, J-, and L-frame circuit breakers equipped with Micrologic 5/6 trip units offer
type A (ammeter) or E (energy) metering functions as well as communication capability. Using
Micrologic trip unit sensors and intelligence, PowerPact H-, J-, and L-frame circuit breakers
provide access to measurements of all the main electrical parameters on the built-in screen, on a
dedicated front display module (FDM121) or through the communication network.
Operating assistance
Integration of measurement functions provides operators with operating assistance functions
including alarms tripped by user-selected measurement values, time-stamped event tables and
histories, and maintenance indicators.
Front display module
The main measurements can be read on the built-in screen of Micrologic 5/6 trip units. They can
also be displayed on the equipment FDM121 along with pop-up windows signalling the main
alarms.
Communication Network
PowerPact H-, J-, and L-frame circuit breakers equipped with Micrologic 5/6 trip units provide
communication capabilities. Simple RJ45 cables connect to a Modbus communication interface
module.
PowerPact™ H-, J-, and L-Frame Circuit Breakers
General Information
11
03/2015
© 2011–2015 Schneider Electric
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™
Protection of distribution
systems
Mission critical applications
The PowerPact H-, J-, and L-frame circuit breakers provide protection against short circuits and
overloads for:
• distribution systems supplied by transformers
• distribution systems supplied by engine generator sets
They are easily installed at all levels in distribution systems, from the main LV switchboard to the
subdistribution boards and enclosures. All PowerPact circuit breakers can protect against
insulation faults by adding an external Vigirex relay.
The PowerPact H-, J-, and L-frame mission critical circuit breakers provide high levels of
selective coordination with QO and ED/EG/EJ circuit breakers.
Protection of motors
The PowerPact H-, J-, and L-frame circuit breakers include a number of versions to protect
motor applications:
• basic short-circuit protection with electronic instantaneous only MCP or the electronic
Micrologic 1.3 M trip units, combined with a special overload relay to provide thermal
protection
• protection against overloads, short circuit and phase unbalance or loss with Micrologic 2 M
trip units
The exceptional limiting capacity of the PowerPact circuit breakers automatically provides
coordination with the motor starter.
Protection of special
applications
The PowerPact H-, J-, and L-frame circuit breakers offer a number of version for special
protection applications:
• industrial control panels with:
— compliance with international standards IEC 60947-2 and UL 508/CSA 22.2 N°14
— compliance with UL 489
— installation in universal and functional enclosures
• 400 Hz systems
Control using automatic
switches
An automatic switch version of PowerPact H-, J-, and L-frame circuit breakers is available for
circuit control. All add-on functions for the circuit breakers may be combined with the basic
automatic switch function, including motor operators.
For information on other automatic switches, contact Schneider Electric.
Manual transfer systems
To ensure a continuous supply of power, some electrical installations are connected to two
power systems:
• the normal source, usually the utility (U)
• a replacement source to supply the installation when the normal source is not available,
generally from a generator (G)
A mechanical and/or electrical interlocking system between two circuit breakers or automatic
switches avoids all risk of parallel connection of the sources during switching.
A system can be manual transfer mechanical device interlocking.
Table 3:Applications
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© 2011–2015 Schneider Electric
All Rights Reserved
PowerPact™ H-, J-, and L-Frame Circuit Breakers
General Information
12
03/2015
™
Mission Critical Circuit Breakers
The PowerPact
™
J- and L-Frame Mission Critical circuit breakers deliver high levels of selective
coordination in a flexible design that can be easily configured for a variety of applications. Tested to be
selectively coordinated with the QO
™
family of miniature circuit breakers and the ED, EG, and EJ
circuit breakers, this solution provides peace of mind when power availability is critical.
An electronic trip unit provides adjustable long-time settings in three sensor sizes, allowing coverage
from 70 through 600 A on 120-240, 208Y/120, 240, and 480Y/277 V systems.
In addition to unique design attributes, the PowerPact Mission Critical circuit breakers have also
undergone rigorous testing procedures to certify the coordination with downstream circuit breakers—
combining innovative engineering with validated test results.
Apply Schneider Electric Mission Critical circuit breakers in emergency power distribution systems,
data centers, hospitals, or anywhere continuity of service is desired.
Theory of Operation
There are several dynamic forces between the PowerPact Mission Critical circuit breakers and
downstream circuit breakers when a fault occurs downstream of the branch circuit breaker. Many of
these events cannot be shown on the trip curve.
The PowerPact Mission Critical circuit breakers analyze the fault current to make decisions which
maximize selectivity with downstream circuit breakers. The trip units deploy a special selectivity delay
to allow downstream circuit breakers to clear. However, on very high faults or if the downstream circuit
breaker does not trip, the circuit breaker trips the mechanism instantaneously.
The combination of the PowerPact Mission Critical circuit breaker and downstream circuit breakers
shown in the selectivity charts in the instruction bulletin are selective due to the fact that the series
impedance and the let-through from the downstream circuit breaker does not produce enough energy
to trip the PowerPact Mission Circuit circuit breaker.
This system maximizes the interaction of the circuit breakers in series to allow selectivity.
Trip Units and Trip Curves
The PowerPact J- and L-Frame Mission Critical circuit breakers deliver high levels of selective
coordination with the QO™ family of miniature circuit breakers and the ED, EG, and EJ circuit breakers
in a flexible design that can be easily configured for a variety of applications. These circuit breaker can
be equipped with 3.2-W, 3.2S-W, 5.2A-W, 5.2E-W, 6.2A-W, 3.3S-W, 5.3A-W, 6.3A-2, and 6.3E-2
Micrologic trip units. See the catalog numbers and references beginning in Table 19.
The mission critical trip units have the same settings and trip curves as the standard trip units
described in this document.
For more information see the trip unit user guides 48940-310-01 and 48940-312-01 on the Schneider
Electric website.
Ratings Available Configurations
UL 489 Listed
CSA Certified
Voltage: 480Y/277 V
• I-Line mounting
• Main circuit breaker in NQ and NF panelboards
• Unit mount for OEM users
• Plug-in base for OEM users
• Drawout base for OEM users
PowerPact™ H-, J-, and L-Frame Circuit Breakers
General Information
13
03/2015
© 2011–2015 Schneider Electric
All Rights Reserved
™
J-frame mission critical circuit breakers are selective with QO or E-frame circuit breakers per Table 4
when the amperage of the main circuit breaker is at least two times the amperage of the branch circuit
breaker.
L-frame mission critical circuit breakers are selective with QO-style and E-frame circuit breakers per
Table 5 when the amperage of the main circuit breaker is at least two times greater than the amperage
of the branch circuit breaker.
Table 4:J-Frame Selectivity with QO and E-Frame Circuit Breakers
1
1 Including AFI, CAFI, EPD and GFI circuit breakers.
Circuit Breaker Voltage Current One-Line Diagram
MainBranch
J–W, 250 A
QO(B)
QO(B)-H
QO(B)-VH
QH
1P, 2P
10–30 A
240/120 V
120 V
18 kA
35–60 A 15 kA
70–125 A 12 kA
3P
10–30 A
240 V
208 V
15 kA
35–60 A 13 kA
70–125 A 10 kA
J–W, 250 A E-Frame 1P, 2P, 3P
15–125 A 240 V 18 kA
15–60 A
480Y/277 V
10 kA
70–125 A 7 kA
Table 5:L-Frame Selectivity with QO and E-Frame Circuit Breakers
1
1 Including AFI, CAFI, EPD and GFI circuit breakers.
Circuit Breaker Voltage Current One-Line Diagram
Main Branch
L–W, 250 A
QO(B)
QO(B)-H
QO(B)-VH
QH
10–60 A
240 V
18 kA
70–125 A 10 kA
L–W, 400 A
L–W, 600 A
QO(B)
QO(B)-H
QO(B)-VH
QH
15–150 A 240 V 30 kA
L–W, 250 A
L–W, 400 A
L–W, 600 A
E-Frame 15–125 A
240 V 30 kA
480Y/277 30 kA
FAULT
Load
Load
QO 20 A 1P
QO 100 A 2P
J-Frame Mission Critical Circuit Breaker
FAULT
Load
Load
QO 20 A 1P
QO 100 A 2P
L-Frame Mission Critical Circuit Breaker
