Section 1: Load Centers PDF

Section 1: Load Centers PDF

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QO Indoor Load Centers, Single Phase

Class 736, 1130 / Refer to Catalog 1100CT0501

Plug-on Neutral Load Center Main Lugs, Convertible Mains

Single Phase 3W—120/240 Vac Indoor—UL Listed

QO Plug-on Neutral Load Centers and CAFI Breakers are engineered for a quick Plug-on Neutral connection on every unit.

Convertible Main Lugs Plug-on Neutral Load Center (Compatible with QO Plug-on Circuit Breaker and QO Plug-on Neutral Circuit Breakers)

 

Mains

Rating

Spaces

Max.

Single

Pole

Circuits

[1]

Max.
Tandem

Circuit

Breakers

Load Center

Box and Interior

Load Center Covers

Al

CU

Bus Rating

Equipment

Ground Bar Kit

(Factory-Included)

Box No. [2]

Flush/Surface

Mono-Flat

I

N

D

O

O

R

Convertible Mains—Factory-installed Main Lugs — 65 kA Short Circuit Current Rating—Copper Bus

QOM1 Main Frame Size—Convertible to Main Circuit Breaker

125 A

12

24

12

QO112L125PG

QOC16UF[3]

QOC16US

—

6–2/0

 125

PKGTALP1

 6

16

24

 8

QO116L125PG

QOC24UF[3]

QOC24US

—

6–2/0

 125

PKGTALP1

 7

20

24

 4

QO120L125PG

QOC20U100F[3]

QOC20U100S

—

6–2/0

 125

PKGTALP1

 6

24

34

 10

QO124L125PG

QOC24UF[3]

QOC24US

—

6–2/0

 125

PK15GTAL

 7

30

34

 4

QO130L125PG

QOC30U125C

—

6–2/0

 125

PK23GTAL

 9

32

38

 6

QO132L125PG

QOC32UF[3]

—

6–2/0

 125

PKGTALP1

 8

Convertible Mains— Factory-installed Main Lugs, 65 kA Short Circuit Current Rating—Copper Bus

QOM2 Main Frame Size—Convertible to Main Circuit Breaker

200 A

12

24

12

QO112L200PG

QOC30UF[3]

QOC30US

QOCMF30UCW[3]

4–300

4–250

 225

PKGTALP1

 9

24

36

12

QO124L200PG

QOC30UF[3]

QOC30US

QOCMF30UCW[3]

4–300

4–250

 225

PKGTALP1

 9

30

40

10

QO130L200PG

QOC30UF[3]

QOC30US

QOCMF30UCW[3]

4–250

 225

PK23GTAL

 9

40

60

20

QO140L200PG

QOC40UF[3]

QOC40US

—

4–300

4–250

 225

PKGTALP2

10

225 A

42

52

10

QO142L225PG

QOC42UF[3]

QOC42US

QOCMF42UCW[3]

4–300

 225

PK23GTAL

11

54

64

10

QO154L225PG

QOC54UF[3]

QOCMF54UCW[3]

4–300

 225

PK23GTAL

11

Above listings through 200 A mains rating meet Federal Specification W-P-115c as Type 1, Class 2.

OBS This product is obsolete.

Field-Installed Main Circuit Breaker Kits, 1Ø

QOM1 Frame Size

50–125 Amperes

These tables define application and selection criteria for field‑installed QOM main circuit breaker kits used in convertible main load centers for single‑phase (Ø) systems. They cover QOM1 frame sizes rated 50–125 A and QOM2 frame sizes rated 100–225 A, aligned with permitted load center mains ratings and 22 kA AIR short‑circuit capability. Listed data includes approved breaker catalog numbers, conductor lug wire size ranges, UL usage conditions, maximum load ratings, and optional shunt‑trip configuration requirements to support code‑compliant electrical installations.

note

Use with convertible main load centers only.

QOM1 Frame Size

Main Circuit Breaker Rating [4]

Convertible

Load Center Mains Rating

22 k AIR  [5]

Lug Wire Size   [6] AWG/kcmil

Main Circuit Breaker

50 A

100–125

QOM50VH

12–2/0 Al or Cu

60 A

100–125

QOM60VH

70 A

100–125

QOM70VH

80 A

100–125

QOM80VH

90 A

100–125

QOM90VH

100 A

100–125

QOM100VH

110 A

125

QOM110VH

125 A

125

QOM125VH

QOM2 Frame Size

100–225 Amperes

QOM2 Frame Size

Main Circuit Breaker Rating [4]

Convertible Load Center Mains Rating

22 k AIR  [5]

Lug Wire Size  [6]

AWG/kcmil

Main Circuit Breaker [7]

100 A

150–225

QOM2100VH

4–300 Al or Cu

125 A

150–225

QOM2125VH

150 A

150–225

QOM2150VH

175 A

200–225

QOM2175VH

200 A

200–225

QOM2200VH

225 A

225

QOM2225VH

Plug-on Neutral Load Center Main Breaker, Convertible Mains

1Ø3W—120/240 Vac Indoor—UL Listed

QO Plug-on Neutral Load Centers and CAFI Breakers are engineered for a quick Plug-on Neutral connection on every unit.

Convertible Main Breaker Plug-on Neutral Load Centers (Compatible with QO Plug-on Circuit Breakers and QO Plug-on Neutral Circuit Breakers)

 

Mains
Rating

Spaces

Max.
1P
Circuits

Max.
Tandem
Breakers

Load Center Box and Interior

Load Center Covers

Al

Cu

Bus Rating

Equipment
Ground Bar Kit
(Order Separately)

Box No. [8]

Flush/Surface

Mono-Flat
 

QO154M200P

I
N

D

O

O

R

Convertible Mains — Factory-Installed Main Circuit Breaker— 22 kA Short Circuit Current Rating
Convertible to Main Lugs (see below) or Lower Amperage Main Circuit Breaker (see QO Standard Plug-On Circuit Breakers) [5],
QOM1 Main Circuit Breaker Frame Size—Copper Bus

100 A

12

24

12

QO112M100P

QOC12UF

QOC12US

—

6-2/0

6–1

 125

PK9GTA

5

16

24

8

QO116M100P

QOC20U100F[3]

QOC200U100S

—

6-2/0

6–1

 125

PK9GTA

6

20

24

4

QO120M100P

QOC20U100F[3]

QOC200U100S

—

6-2/0

6–1

 125

PK9GTA

6

24

34

10

QO124M100P

QOC24UF[3]

QOC24US

—

6-2/0

 125

PK15GTA

7

32

38

6

QO132M100P

QOC32UF[3]

—

6-2/0

 125

PK15GTA

8

125 A

24

34

10

QO124M125P

QOC24UF[3]

QOC24US

—

6-2/0

 125

PK15GTA

7

32

38

6

QO132M125P

QOC32UF[3]

—

6-2/0

 125

PK15GTA

8

Convertible Mains — Factory-Installed Main Circuit Breaker— 22 kA Short Circuit Current Rating
Convertible to Main Lugs (see below) or Lower Amperage Main Circuit Breaker (see QO Standard Plug-On Circuit Breakers) [5],
QOM2 Main Circuit Breaker Frame Size—Copper Bus

150 A

24

36

12

QO124M150P

QOC30UF[3]

QOC30US

QOCMF30UCW[3]

4-250

 225

PK15GTA

9

30

40

10

QO130M150P

QOC30UF[3]

QOC30US

QOCMF30UCW[3]

4-250

 225

PK15GTA

9

32

40

10

QO132M150P

QOC40UF[3]

QOC40US

—

4-300

4-250

 225

PK15GTA

10

200 A

24

36

12

QO124M200P

QOC30UF[3]

QOC30US

QOCMF30UCW[3]

4-300

4-250

 225

PK15GTA

9

30

40

10

QO130M200P

QOC30UF[3]

QOC30US

QOCMF30UCW[3]

4-250

 225

PK15GTA

9

40

60

20

QO140M200P

QOC40UF[3]

QOC40US

—

4-300

4-250

 225

PK23GTA

10

42

52

10

QO142M200P

QOC42UF[3]

QOC42US

QOCMF42UCW[3]

4-300

 225

PK18GTA

11

54

72

18

QO154M200P

QOC54UF[3]

QOCMF54UCW[3]

4-300

 225

PK23GTA

12

60

72

12

QO160M200PC [9]

—

—

4-300

 225

PK27GTA

24

225 A

42

52

10

QO142M225P

QOC42UF[3]

QOC42US

QOCMF42UCW[3]

4-300

 225

PK18GTA

11
 

Above listings through 200 A mains rating meet Federal Specification W-P-115c as Type 1, Class 2.

OBS This product is obsolete.

Field-Installed Main Lugs Kits, 1Ø

QOL125

QOL225

1Ø Field-Installed Main Lug Kits—Use with Convertible Main Load Centers Only

Main Lugs   
Rating [4]

Use on

Convertible Load Center

with Mains Rating

Cat. No.

Lug Wire Size   [10]

AWG/kcmil

Al or Cu

125 A

100–125 A

QOL125 [11]

6–2/0

125 A

100–125 A

QOL125VD [11]

6–4/0

225 A

150–225 A

QOL225 [11]

6–300

QO™ Plug-On Neutral Load Centers with Qwik-Grip™

QO Plug-on Neutral

Load Center with Qwik-Grip™

1Ø3W—120/240 Vac Indoor—UL Listed

The Square D QO plug-on neutral load centers with Qwik-Grip simplify rough-in by eliminating the need to remove knockouts, install wire connectors, and blindly pull wire into the load center. A quick bend of the wire using the wire bend guide on the Qwik-Grip insert and the wire slides into the slot. Once inserted, the Qwik-Grip shield snaps on to keep the wire behind the router for a secure, code-compliant installation.

Plug-on Neutral Load Centers with Qwik-Grip (Compatible with QO Plug-on Circuit Breakers and QO Plug-on Neutral Circuit Breakers)

 

Mains Rating

Spaces

  Max. Single Pole Circuits

Max. Tandem Circuit Breakers

Load Center  Box and Interior

Indoor Cover with Door (Order Separately)

Main Wire Size AWG/kcmil

Bus Rating

Equipment Gound Bar Kit

Box No.

Flush/Surface

Mono-Flat

Al

Cu

I

N

D

O

O

R

Convertible Mains—Factory-Installed Main Lugs, 65 kA Short Circuit Current Rating—Copper Bus, QOM1 Main Frame Size, Convertible to Main Circuit Breaker

125 A

24

34

10

QO124L125PQG

QOC24UF[3]

QOC24US

—

6–2/0

   125

PK15GTAL Included

7Q

Convertible Mains-Factory—Installed Main Lugs, 65 kA Short Circuit Current Rating—Copper Bus, QOM2 Main Frame Size, Convertible to Main Circuit Breaker

200 A

30

40

10

QO130L200PQG

QOC30UF[3]

QOC30US

—

6–300

 225

PK23GTAL Included

9Q

225 A

42

52

10

QO142L225PQG

QOC42UF[3]

QOC42US

—

 225

PK23GTAL

9Q

Convertible Mains—Factory-Installed Main Circuit Breaker, 22 kA Short Circuit Current Rating—Copper Bus, QOM2 Main Frame Size, Convertible to Main Lugs or Main Circuit Breaker

200 A

30

40

10

QO130M200PQ

QOC30UF[3]

QOC30US

—

4–250

 225

PK23GTA (Order separately)

11Q

42

52

10

QO142M200PQ

QOC42UF[3]

QOC42US

—

 225

PK23GTA (Order separately)

11Q

QO Load Centers with Included Cover

1Ø3W—120/240 Vac Indoor—UL Listed

Load Centers with Included Cover (Compatible with QO Plug-on Circuit Breakers and QO Plug-on Neutral Circuit Breakers)

Mains

Rating

Short
Circuit Current Rating

Spaces

  Max. 1P

Circuits [1]

Max. Tandem Circuit Breakers

Load Center [12]

Box, Interior, and Cover

Al

Cu

Bus Rating

Equipment Ground Bar Kit

Box No.

[13]
 

 125 A

65 kA

12

24

12

QO112L125PGC

6-2/0

 125

PKGTALP1 Included

5

65 kA

24

34

10

QO124L125PGC

6-2/0

 125

PK15GTA, LK100AN Included

7

Convertible Mains—Factory-Installed Main Lugs [14]—QOM2 Main Frame Size—Convertible to Main Circuit Breaker (See QO Standard Plug-On Circuit Breakers)—Copper Bus

 200 A

65 kA

30

40

10

QO130L200PGC

4-250

 225

PK23GTA, LK100AN Included

9

 225 A

65 kA

42

52

10

QO142L225PGC

4-300

 225

PK23GTA, LK100AN Included

11

Convertible Mains—Factory-Installed Main Circuit Breaker—
QOM1 Main Frame Size—Convertible to Main Lugs (See 1Ø, Field-Installed Mains Kits or Lower Amperage Main Circuit Breaker (See QO Standard Plug-On Circuit Breakers)—Copper Bus [5]

100 A

22 kA

12

24

12

QO112M100PC

6–2/0

6–1

 125

PK9GTA

5

22 kA

20

24

4

QO120M100PC

6–2/0

6–1

 125

PK9GTA

6

22 kA

24

34

10

QO124M100PC

4-300

 125

PK15GTA

7

Convertible Mains—Factory-Installed Main Circuit Breaker—
QOM2 Main Frame Size—Convertible to Main Lugs (See 1Ø, Field-Installed Mains Kits or Lower Amperage Main Circuit Breaker (See QO Standard Plug-On Circuit Breakers)—Copper Bus [5]

150 A

22 kA

30

40

10

QO130M150PC

4-250

 225

PK15GTA

9

22 kA

42

52

10

QO142M150PC

4-300

 225

PK18GTA

11

200 A

22 kA

30

40

10

QO130M200PC

4-250

 225

PK15GTA

9

22 kA

40

60

20

QO140M200PC

4-300

4-250

 225

PK23GTA

10

22 kA

42

52

10

QO142M200PC

4-300

 225

PK18GTA

11

22 kA

54

72

18

QO154M200PC

4-300

 225

PK23GTA

12

Footnotes

  1. Maximum single pole branch circuits utilizing QO and/or QOT circuit breakers.
  2. See Indoor Knockout Information and Enclosure Dimensions
  3. Available in gray and white. For white equivalencies, add the “W” suffix to the reference, or see QO Load Center Covers.
  4. Do not exceed the load center mains rating.
  5. 22 k AIR main circuit breaker UL Listed for use ahead of QO, QOT and QO-PL 10 k AIR branch circuit breakers to permit their application on systems with up to 22 kA available fault current.
  6. Wire range listed for QOM circuit breaker kits is the wire range of that circuit breaker. To find out maximum wire size permitted in a particular load center per UL, see Main Wire Size in that load center table.
  7. Add suffix 1021 for 120, 208 or 240 Vac shunt trip.
  8. See Indoor Knockout Information and Enclosure Dimensions.
  9. For Certification to IEC 60439-1 contact the local Square D sales office; otherwise panels are NOT CE marked. (For use on 415Y/240 Vac 3-phase 4-wire, 3,000 Short Circuit Current Rating when QOXD...branch circuit breakers are used and 10,000 Short Circuit Current Rating when QO...VS branch circuit breakers are used).

  10. Wire range listed for QOL lug kits is the wire range of that lug. To find out maximum wire size permitted in a particular load center per UL, see Main Wire Size in that load center table.

  11. If main circuit breaker knockout has been removed from the load center’s trim, order appropriate filler plate from Table 1.51
  12. Order F for flush device or S for surface device.
  13. See Knockout Information
  14. UL Listed 5000 A short circuit current rating for corner grounded Delta systems. Use QO-H circuit breakers only.
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