QO Plug-On Circuit Breakers

Class 730, 731, 733 / Refer to Catalog: 0730CT9801

QO Plug-On Circuit Breakers

Square D brand QO miniature circuit breakers are plug-on products for use in QO load centers, NQOD and NQ panelboards, NQOD and NQ OEM interiors or Speed-D switchboard distribution panels. Bolt-on QOB circuit breakers are for use in NQOD and NQ panelboards or interiors. [1]

The Square D exclusive Qwik-Open mechanism, with a trip reaction within 1/60th of a second, is standard on all 1P 15 A and 20 A QO circuit breakers.

QO 1P
1 Space Required


QO 2P
2 Spaces Required


QO 3P
3 Spaces Required


QO2200 2P 200 A
4 Spaces Required

Plug-On Circuit Breakers

Amperes
Rating [2]

1P—120/240 Vac

2P—120/240 Vac
Common Trip

2P—240 Vac   [3]
Common Trip

3P—240 Vac
Common Trip

10 k AIR

10 A

QO110

QO210

QO310

15 A

QO115 [4] [5]

QO215 [4]

QO215H

QO315 [4]

20 A

QO120 [4] [5]

QO220 [4]

QO220H

QO320 [4]

25 A

QO125 [4]

QO225 [4]

QO225H

QO325 [4]

30 A

QO130 [4]

QO230 [4]

QO230H

QO330 [4]

35 A

QO135 [4]

QO235 [4]

QO335 [4]

40 A

QO140 [4]

QO240  [4]

QO240H

QO340 [4]

45 A

QO145 [4]

QO245 [4]

QO345 [4]

50 A

QO150 [4]

QO250 [4]

QO250H

QO350 [4]

60 A

QO160 [4]

QO260 [4]

QO260H

QO360 [4]

70 A

QO170 [4]

QO270 [4]

QO270H

QO370 [4]

80 A

QO280 [4]

QO280H

QO380 [4]

90 A

QO290 [4]

QO290H

QO390 [4]

100 A

QO2100 [4]

QO2100H

QO3100 [4]

110 A

QO2110 [4]

125 A

QO2125 [4]

150 A

QO2150 [4] [6] [7]

175 A

QO2175  [4] [6] [7]

200 A

QO2200 [4] [6] [7]

Molded Case Switch 60 A max.–240 Vac

QO200

QO300

Molded Case Switch 100 A max.–240 Vac

QO2000 [8]

QO3000 [8]

22 k AIR [4]

15 A

QO115VH [5]

QO215VH [9]

QO315VH [9]

20 A

QO120VH [5]

QO220VH [9]

QO320VH [9]

25 A

QO125VH

QO225VH [9]

QO325VH [9]

30 A

QO130VH

QO230VH [9]

QO330VH [9]

40 A

QO140VH

QO240VH [9]

QO340VH [9]

50 A

QO150VH

QO250VH [9]

QO350VH [9]

60 A

QO160VH

QO260VH [9]

QO360VH [9]

70 A

QO170VH

QO270VH [9]

QO370VH [9]

80 A

QO280VH [9]

QO380VH [9]

90 A

QO290VH [9]

QO390VH [9]

100 A

QO2100VH [9] [10]

QO3100VH [9]

110 A

QO2110VH [9] [10]

125 A

QO2125VH [9] [10]

150 A

QO2150VH [6] [9] [7]

175 A

QO2175VH [6] [9] [7]

200 A

QO2200VH [6] [9] [7]

42 k AIR [4]

 40 A

QOH240 [8]

 45 A

QOH245 [8]

 50 A

QOH250 [8]

 60 A

QOH26 [8]

 70 A

QOH270

 80 A

QOH280

 90 A

QOH290

100 A

QOH2100

110 A

QOH2110 [8]

125 A

QOH2125

65 k AIR [4]

 15 A

QH115 [5]

QH215

QH315 [4]

 20 A

QH120 [5]

QH220

QH320

 25 A

QH125 [8]

QH225  [8]

QH325 [8]

 30 A

QH130

QH230

QH330

Refer toQO for Interrupting Ratings, Accessories, and Dimensions.

QO/QOB Ring Terminal

QO/QOB Ring Terminal—Factory-installed only

Ampere Rating

Poles

Suffix

10–30 A

1, 2, 3

5237

35–60 A

1,2

5238

35–50 A

3

 70–110 A

2

5273

 60–100 A

3

Wire Sizes for QO/QOB Circuit Breakers

Wire Sizes

Circuit Breaker Type

Ampere Rating

[2]

Wire Size
(AWG/kcmil)

QO

1P

10–30 A

14–8 Al/Cu

10–30 A

(2) 14–10 Cu

35–70 A

8–2 Al/Cu

QO

2P

10–30 A

14–8 Al/Cu

10–30 A

(2) 14–10 Cu

35–70 A

8–2 Al/Cu

80–125 A

4–2/0 Al/Cu

150–200 A

4–300 Al/Cu

QO

3P

10–30 A

14–8 Al/Cu, (2) 14-10 Cu

35–70 A

8–2 Al/Cu

80–125 A

4–2/0 Al/Cu

QOB-VH

110–150 A

4–300 Al/Cu

QOT

15–20 A

12–8 Al 14–8 Cu

QO-AFI, QO-GFI or QO-EPD

15–30 A

12–8 Al 14–8 Cu

40, 50, 60 A

12–4 Al 14–6 Cu

QO-PL

10–60 A

12–2 Al 14–2 Cu

QOT Tandem Circuit Breakers


QOT 1P Tandem
1 Space Required

Circuit limiting QOT tandem circuit breakers have a mounting cam as shown. Installation into a QO load center can only be made in those positions having a mounting pan rail slot. Meets Paragraph 408.54 of the NEC®. UL Listed as Class CTL

QOT Tandem Circuit Breakers

Ampere Rating [2]

Cat. No. [4]

1P—120/240 Vac

15 A and 15 A

QOT1515

15 A and 20 A

QOT1520

20 A and 20 A

QOT2020

2P—120/240 Vac Common Trip

Order two QOT1515 or QOT2020 circuit breakers and handle tie QOTHT for common switching of center two poles.


Replacement Tandem Circuit Breakers Includes two circuit breakers (one QO2030 and one QO3020) and handle tie QOTHT.

Replacement Tandem Circuit Breakers

Ampere Rating [2]

Cat. No. [4]

1P—120/240 Vac—1 Space Required

15 A and 15 A

QO1515

15 A and 20 A

QO1520

20 A and 20 A

QO2020

20 A and 30 A

QO2030

30 A and 20 A

QO3020

Two 1P Individual Trip—120/240 Vac—2 Spaces Required

15 A and 15 A

Order Two QO1515 or QO2020 circuit breakers and handle tie QOTHT

15 A and 20 A

20 A and 20 A

20 A and 30 A

QO20303020 [11]

30 A and 20 A

QO Plug-On Neutral Load Centers with Qwik-Grip

QO Plug-on Neutral

Load Center with Qwik-Grip

Qwik-Grip simplifies rough-in by eliminating the need for most knockout removals and eliminates the use of most box connectors. With a quick bend of the NM-B wire using the wire bend guide on the Qwik-Grip.

QO Plug-on Neutral Load Centers with Qwik-Grip

 

Mains Rating

Spaces

  Max. Single Pole Circuits

Max. Tandem Circuit Breakers

Load Center  Box and Interior

Indoor Cover with Door (Order Seperately)

Main Wire Size AWG/kcmil

Equipment Gound Bar Kit

Box No.

Flush

Surface

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

24

0

QO124L125PQG

QOC24UF

QOC24US

6–2/0

PK15GTAL

7Q

30

30

0

QO130L125PQG

QOC30U125C

QOC30U125C

PK23GTAL

9Q

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

30

0

QO130L200PQG

QOC30UF

QOC30US

6–300

PK23GTAL

9Q

225 A

42

42

0

QO142L225PQG

QOC42UF

QOC42US

PK15GTAL and PK15GTA included

9Q

54

54

0

QO154L225PQG

QOC54UF

6–300

PK23GTA LK100AN

12Q

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

30

0

QO130M200PQ

QOC30UF

QOC30US

4–250

PK23GTA (Order seperately)

11Q

42

42

0

QO142M200PQ

QOC42UF

QOC42US

PK23GTA (Order seperately)

11Q

54

54

0

QO154M200PQ

QOC54UF

4–250

PK23GTA (Order seperately)

12Q

Class 685, 690, 730, 912, 950 / Refer to Catalog: 0730CT9801

QO Arc-Fault Circuit Breaker

1P

QO-CAFI

Plug-On Neutral

1P

QO-CAFI

Pigtail

QO arc-fault circuit breakers provide protection for Series and Parallel Type Arcing as required by the NEC and local code adoption, and comply with UL1699.

QO Arc Fault Circuit Breakers (One-Pole)

Circuit Breaker Type [4]

Ampere
Rating

One–Pole 120 Vac

Two–Pole 120/240 Vac

10 k AIR
1 Space Required

22 k AIR
1 Space Required

10 k AIR
2 Space Required

22 k AIR
2 Space Required

Combination Arc-fault Interrupter
(Pigtail Neutral)

15

20

QO115CAFI

QO120CAFI

QO115VHCAFI

QO120VHCAFI

QO215CAFI [12]

QO220CAFI [12]

QO215VHCAFI [12]

QO220VHCAFI [12]

Plug-On Neutral Combination Arc-fault Interrupter

15

20

QO115PCAFI

QO120PCAFI

QO115VHPCAFI

QO120VHPCAFI

   

QO-Dual Function Circuit Breaker

1P QO-DF

Plug-on Neutral

1P QO-DF

Pigtail

QO Combination Arc Fault and Ground Fault Circuit Interrupters (Dual Function) provide overload and short circuit protection, plus arc fault and ground fault protection in accordance with the NEC, UL1699 and UL943.

QO-Dual Function Arc Fault Circuit Breakers

Circuit Breaker Type [4]

Ampere
Rating

1P 120 Vac
10 k AIR
1 Space Required

1P 120 Vac
22 k AIR
1 Space Required

Combination Arc-fault and Ground Fault Circuit Interrupter (Pigtail Neutral)

15

20

QO115DF

QO120DF

QO115VHDF

QO120VHDF

Plug-On Neutral Combination Arc-fault and Ground Fault Circuit Interrupter

15

20

QO115PDF

QO120PDF

QO115VHPDF

QO120VHPDF

QO-GFI

1P
QO-GFI

2P
QO-GFI

Qwik-Gard circuit breakers provide overload and short circuit protection, combined with Class A ground fault protection. Class A denotes a ground fault circuit interrupter that will trip when a fault current to ground is 6 mA or more, for people protection. Do not connect to more than 250 feet of load conductor for the total one-way run to prevent nuisance tripping.

QO-GFI Circuit Breakers

Ampere Rating
[13]

Qwik-Gard Circuit Breakers With Ground Fault Circuit Interrupter

1P 120 Vac

2P Common Trip
120/240 Vac

3P Common Trip
208Y/120 Vac

10 k AIR
1 Space Required

22 k AIR
1 Space Required

10 k AIR
2 Spaces Required

10 k AIR
3 Spaces Required

15

QO115GFI

QO115VHGFI

QO215GFI

QO315GFI

20

QO120GFI

QO120VHGFI

QO220GFI

QO320GFI

25

QO125GFI

QO125VHGFI

QO225GFI

30

QO130GFI

QO130VHGFI

QO230GFI

QO330GFI

40

QO240GFI

QO340GFI

50

QO250GFI

QO350GFI

60

QO260GFI  [14]

QO-EPD/EPE

QO 1P
With Shunt Trip

QO-EPD/EPE circuit breakers provide overload and short circuit protection combined with Class B ground fault protection. They are designed to provide ground fault protection of equipment at a 30 mA level (EPD) or 100 mA level (EPE). They are not designed to protect people from electrical shock.

QO-EPD Circuit Breakers

Ampere Rating
[13]

1P
120 Vac
10 k AIR
1 Space Required

2P Common Trip
120/240 Vac
10 k AIR
2 Spaces Required

3P Common Trip
240 Vac
10 k AIR
3 Spaces Required

15

QO115EPD

QO215EPD

QO315EPD [15]

QO315EPE [15]

20

QO120EPD

QO220EPD

QO320EPD [15]

QO320EPE [15]

25

QO125EPD

QO225EPD

30

QO130EPD

QO230EPD

QO330EPD [15]

QO330EPE [15]

40

QO240EPD

QO340EPD [15]

QO340EPE [15]

50

QO250EPD

QO350EPD [15]

QO350EPE [15]

60

QO260EPD [14]

QO-HID

HID circuit breakers are for use on circuits feeding fluorescent and high intensity discharge (HID) lighting systems such as mercury vapor, metal halide, or high pressure sodium. These circuit breakers are physically interchangeable with QO circuit breakers.

QO-HID Circuit Breakers

Ampere
Rating [13]

1P 120/240 Vac
10 k AIR
1 Space Required

2P Common Trip
120/240 Vac
10 k AIR
2 Spaces Required

3P Common Trip
240 Vac
10 k AIR
3 Spaces Required

15

QO115HID [5]

QO215HID

QO315HID

20

 

QO220HID

QO320HID

25

QO125HID

QO225HID

QO325HID

30

QO130HID

QO230HID

QO330HID

40

QO140HID

QO240HID

50

QO150HID

QO250HID

QO-K

QO-K Key Operated

Key operated QO circuit breakers are available in single-pole construction and can be mounted in any single-pole space which will accept a standard QO. These circuit breakers can be turned ON or OFF or to RESET with a special key (catalog number QOK10) included with the circuit breaker. These circuit breakers are UL Listed and available as shown in the table.

QO-K Circuit Breakers

120 Vac—10 k AIR (1 Space Required)

Ampere
Rating [13]

Cat. No.

Ampere
Rating  [13]

Cat. No.

10

15

20

QO110K

QO115K

QO120K

25

30

QO125K

QO130K

QO-HM

High magnetic trip circuit breakers are recommended for applications where high initial inrush may occur and for individual dimmer applications.

QO-HM Circuit Breakers

120 Vac—10 k AIR

Ampere Rating [13]

1P

15 A

QO115HM [4] [5]

20 A

QO120HM [4] [5]

Non-Automatic (Standard) Miniature Switches

Miniature non-automatic switches have the same physical packaging as miniature circuit breakers, but open only when the handle is switched to the OFF position.

Non-automatic switches provide no overcurrent protection or short circuit protection. They must not be used on systems that have an available fault current greater than the values listed in the table. Non-automatic switches are UL Listed per UL 1087 and are CSA certified.

QO Non-Automatic Miniature Switches, 240 Vac 10 kA

Ampere Rating

2P

3P

 60

QO200

QO300

100

QO2000

QO3000

Footnotes

  1. See Digest Section 1 for load centers, and Section 9 for panelboards and interiors.
  2. 10–30 A circuit breakers are suitable for use with 60oC or 75oC conductors. 35–125 A circuit breakers are suitable for use with 75oC conductors.
  3. UL Listed 5 k AIR on corner grounded Delta systems.

  4. UL Listed as HACR type for use with air conditioning, heating and refrigeration equipment haing motor group combinations and marked for use with HACR type circuit breakers.
  5. UL Listed as SWD (switching duty) rated. Suitable for switching 120 Vac fluorescent lighting loads.
  6. Requires four spaces (1 AWG–300 kcmil Al/Cu.) Suitable for switching 120 Vac fluorescent lighting loads.
  7. Not suitable for use in 3Ø panels. Use only in 1Ø panel rated 150 A or greater.
  8. Order only. Contact your local Field Office.
  9. UL Listed for use ahead of QO, QO-GFI, QO-EPD, QOT, QO-AFI, and QO-PL 10 k AIR circuit breakers to permit their application at 22 kA fault level.
  10. 100 A maximum branch mounted opposite.
  11. Includes two circuit breakers (one QO2030 and one QO3020) and handle tie QOTHT.
  12. For 120/240 V only, not for 208Y/120 V.
  13. 10–30 A circuit breakers are suitable for use with 60oC or 75oC conductors. 35–60 A circuit breakers are suitable for use with 75oC conductors.
  14. Suitable only for feeding 240 Vac and 208 Vac two-wire loads. Does not contain load neutral connection.
  15. See note in Instruction Bulletin when using in an enclosure with a QO403 or QON prefix.

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