Section 9: Panelboards PDF

Section 9: Panelboards PDF

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QOB Circuit Breakers for NQ Panelboards

Online Refer to NQ Panelboards

QOB Bolt-On Circuit Breakers with Visi-Trip™ Indicator for NQ Panelboards


note

NQ panelboards also accept QO plug-on circuit breakers, see tables in Section 7 of the Digest. NQ panelboards with 175 or 200 A QO breakers require three point latch trim fronts.[1]

QOB-GFI, QOB-EPD, and QOB-EPE Circuit Breakers

Ampere Rating [2]

One-pole

Two-pole—Common Trip

Three-pole—Common Trip

Catalog No.

Catalog No.

Catalog No.

Catalog No.

QOB-GFI—QOB Qwik-Gard™ Circuit Breaker With Ground Fault Circuit Interrupter—UL Class A 4–6 mA People Protection. [3]

120 Vac—10 k AIR[4]

120/240 Vac—
10 k AIR[4]

208Y/120 Vac—10 k AIR

 15 A

QOB115GFI

QOB215GFI

QOB315GFI

  

 20 A

QOB120GFI

QOB220GFI

QOB320GFI

  

 25 A

QOB125GFI

QOB225GFI

—

  

 30 A

QOB130GFI

QOB230GFI

QOB330GFI

  

 40 A

—

QOB240GFI

QOB340GFI

  

 50 A

—

QOB250GFI

QOB350GFI

  

 60 A

—

QOB260GFI[5]

—

  

QOB-VHGFI [6]

120 Vac—22 k AIR[4]

 15 A

QOB115VHGFI

      

 20 A

QOB120VHGFI

      

 25 A

QOB125VHGFI

      

 30 A

QOB130VHGFI

      

QOB-EPD—QOB Equipment protection circuit breakers

with UL Listed 30 mA (EPD) or 100 mA (EPE) equipment protection.

120 Vac—10 k AIR[4]

120/240 Vac—
10 k AIR[4]

240 Vac—10 k AIR[4]

 15 A

QOB115EPD

QOB215EPD

QOB315EPD

QOB315EPE

 20 A

QOB120EPD

QOB220EPD

QOB320EPD

QOB320EPE

 25 A

QOB125EPD

QOB225EPD

—

—

 30 A

QOB130EPD

QOB230EPD

QOB330EPD

QOB330EPE

 40 A

—

QOB240EPD

QOB340EPD

QOB340EPE

 50 A

—

QOB250EPD

QOB350EPD

QOB350EPE

 60 A

—

QOB260EPD

—

—

QOB-VHEPD

120 Vac—22 k AIR[4]

 15 A

QOB115VHEPD

      

 20 A

QOB120VHEPD

      

 25 A

QOB125VHEPD

      

 30 A

QOB130VHEPD

      

QOB-HM—High magnetic trip circuit breakers

15 A

QOB115HM[7]

      

20 A

QOB120HM[7]

    

QOB-K—Key operated QOB circuit breakers [8]

120 Vac—10 k AIR[4]

10 A

QOB110K

      

15 A

QOB115K

      

20 A

QOB120K

      

25 A

QOB125K

      

30 A

QOB130K

      

Standard Interrupting QOB 10,000 AIR Circuit Breakers

Ampere

Rating [9]

One-pole

Two-pole—Common Trip

Two-pole—

Common Trip [10]

Three-pole—

Common Trip

Catalog No.

Catalog No.

Catalog No.

Catalog No.

QOB Bolt-On

120 Vac—10 k AIR
48 Vdc—5 k AIR[4]

120/240 Vac—10 k AIR
48 Vdc—5 k AIR [11][4]

240 Vac—
10 k AIR[4]

240 Vac—10 k AIR
48 Vdc—5 k AIR [11][4]

 10 A

QOB110

QOB210

—

QOB310

 15 A

QOB115[7][12]

QOB215[12]

QOB215H

QOB315[12]

 20 A

QOB120[7][12]

QOB220[12]

QOB220H

QOB320[12]

 25 A

QOB125[12]

QOB225[12]

QOB225H

QOB325[12]

 30 A

QOB130[12]

QOB230[12]

QOB230H

QOB330[12]

 35 A

QOB135[12]

QOB235[12]

—

QOB335[12]

 40 A

QOB140[12]

QOB240[12]

QOB240H

QOB340[12]

 45 A

QOB145[12]

QOB245[12]

—

QOB345[12]

 50 A

QOB150[12]

QOB250[12]

QOB250H

QOB350[12]

 60 A

QOB160[12]

QOB260[12]

QOB260H

QOB360[12]

 70 A

QOB170[12]

QOB270[12]

QOB270H

QOB370[12][11]

 80 A

—

QOB280[12] [11]

QOB280H

QOB380[12][11]

 90 A

—

QOB290[12] [11]

QOB290H

QOB390[12] [11]

100 A

—

QOB2100[12] [11]

QOB2100H

QOB3100[12] [11]

110 A

—

QOB2110[12] [11]

—

—

125 A

—

QOB2125[12] [11]

—

—

Molded Case Switch 60 A max—240 Vac

QOB200

—

QOB300

Molded Case Switch 100 A max—240 Vac

QOB2000

—

QOB3000

High Interrupting QOB and Specialty Circuit Breakers[9]

Ampere

Rating  [9]

One-pole

Two-pole—Common Trip

Three-pole—Common Trip

Catalog No.

Catalog No.

Catalog No.

QOB-VH

120 Vac—22 k AIR[4]

120/240 Vac —22 k AIR[4]

240 Vac—22 k AIR[4]

 15 A

QOB115VH[7][12]

QOB215VH[12]

QOB315VH[12]

 20 A

QOB120VH [7][12]

QOB220VH[12]

QOB320VH[12]

 25 A

QOB125VH[12]

QOB225VH[12]

QOB325VH[12]

 30 A

QOB130VH[12]

QOB230VH[12]

QOB330VH[12]

 40 A

QOB140VH

QOB240VH[12]

QOB340VH[12]

 50 A

QOB150VH

QOB250VH[12]

QOB350VH[12]

 60 A

QOB160VH

QOB260VH[12]

QOB360VH[12]

 70 A

QOB170VH

QOB270VH[12]

QOB370VH[12]

 80 A

—

QOB280VH[12]

QOB380VH[12]

 90 A

—

QOB290VH[12]

QOB390VH[12]

100 A

—

QOB2100VH[12]

QOB3100VH[12]

110 A

—

QOB2110VH[12]

QOB3110VH  [13]

125 A

—

QOB2125VH[12]

QOB3125VH  [13]

150 A

—

QOB2150VH  [13]

QOB3150VH  [13]

QHB

120 Vac—65 k AIR[4]

120 Vac/240 Vac—65 k AIR[4]

240 Vac—65 k AIR[4]

 15 A

QHB115 [7]

QHB215[12]

QHB315[12]

 20 A

QHB120 [7]

QHB220[12]

QHB320[12]

 25 A

QHB125[12]

QHB225[12]

QHB325[12]

 30 A

QHB130[12]

QHB230[12]

QHB330[12]

QOB-HID—HID circuit breakers [14]

120 Vac—10 k AIR[4]

120/240 Vac—10 k AIR[4]

240 Vac—10 k AIR[4]

 15 A

QOB115HID [7]

QOB215HID

QOB315HID

 20 A

QOB120HID   [7]

QOB220HID

QOB320HID

 25 A

QOB125HID

QOB225HID

QOB325HID

 30 A

QOB130HID

QOB230HID

QOB330HID

 40 A

QOB140HID

QOB240HID

—

 50 A

QOB150HID

QOB250HID

—

QOB-SWN—Switch Neutral—Common Trip—NEC 514.11

1-pole—2-Wire
2 Spaces —120 Vac[4]

2-pole—3-Wire
3 Spaces—120/240 Vac[4]

10 A

—

QOB210SWN

QOB310SWN

15 A

—

QOB215SWN

QOB315SWN

20 A

—

QOB220SWN

QOB320SWN

25 A

—

QOB225SWN

QOB325SWN

30 A

—

QOB230SWN

QOB330SWN

40 A

—

QOB240SWN

QOB340SWN

50 A

—

QOB250SWN

QOB350SWN

QO/QOB Circuit Breaker Wire Sizes

Breaker Type

Ampere Rating 

Wire Size (AWG or kcmil)

Al

Cu

QOB

1-pole

10–30 A

#14–8

#14–8

10–30 A

—

two #14–10

35–70 A

#8–2

#8–2

QOB

2-pole

10–30 A

#14–8

#14–8

10–30 A

—

two #14–10

35–70 A

#8–2

#8–2

80–125 A

#4–2/0

#4–2/0

150–200 A

#4–300

#4–300

QOB

3-pole

10–30 A

#14–8

#14–8

35–70 A

#8–2

#8–2

80–125 A

#4–2/0

#4–2/0

QOB-VH

110–150 A

#4–300

#4–300

QOB-GFI and
QOB-EPD

15–30 A

#12–8

#14–8

40, 50, or 60 A

#12–4

#14–6

QO™ Arc-Fault and Dual Function Circuit Breakers [12][15][9]

Circuit Breaker Type

Ampere Rating [9]

1P 120 Vac
10 kAIR
1 Space Required

1P 120 Vac
22 kAIR
1 Space Required

2P 240 Vac
10 kAIR
2 Space Required

2P 240 Vac
22 kAIR
2 Space Required

Catalog Number

Catalog Number

Catalog Number

Catalog Number

Combination
Arc-Fault
Interupter

15 A

QOB115CAFI

QOB115VHCAFI

QOB215CAFI

QOB215VHCAFI

20 A

QOB120CAFI

QOB120VHCAFI

QOB220CAFI

QOB220VHCAFI

Dual Function:
Arc-Fault and
Ground Fault

15 A

QOB115DF

QOB115VHDF

 Use plug-on QO 2–pole dual function MCBs

20 A

QOB120DF

QOB120VHDF

note

For accessories, see Accessories for QO/QOB Circuit Breakers, in
Section 7.

Single Phase 400 or 600 A NQ Panelboards now accept 150, 175, and 200 A Two Pole QO Plug-on Branch Circuit Breakers.

Each breaker takes four pole spaces. Installation into three phase interiors is not allowed as it may create a phase to phase short circuit.

One NQ200AN neutral lug kit should be installed for each pair of 175 or 200 A QO breakers if a neutral termination is required.

  • One Q1150AN lug kit should be installed for each 110 to 150 A QO(B) circuit breaker, if a neutral termination is required.

–

High Ampacity Plug-on Two Pole QO Branch Circuit Breakers

Catalog Number Ampere Rating AIC Rating

QO2150

 150 10 kA

QO2150VH

 150 22 kA

QO2175

 175 10 kA

QO2200

 200

QO2175VH

 175 22 kA

QO2200VH

 200

note

May only be installed on Single Phase 400 or 600 A NQ Panelboards with three point latch trim fronts.

A maximum of four 150, 175, or 200 A QO (VH) plug-on branch circuit breakers may be installed in NEMA 1 enclosures. These enclosures require NCxxV( )3P three point latch trim fronts, as listed in Main Lug Interiors or Main Circuit Breaker Interiors.

One 150, 175, or 200 A QO (VH) plug-on branch circuit breaker may be installed in 8.75 in. deep MHxxD9VWP NEMA 3R enclosures, as listed in Main Lug Interiors or Main Circuit Breaker Interiors.

Footnotes

  1. For QO plug-on circuit breakers, see the tables starting on Section 7 of the Digest.
  2. 10–30 A circuit breakers are suitable for use with 60 °C or 75 °C conductors. 35–60 A circuit breakers are suitable for use with 75 °C conductors.
  3. Do not connect to more than 250 feet of load conductor for the total one-way run to prevent nuisance tripping.
  4. May be applied in 208Y/120 Vac systems.
  5. Suitable only for feeding 240 Vac and 208 Vac two-wire loads. Does not contain load neutral connection.
  6. Recommended for applications where high initial inrush may occur and for individual dimmer applications.
  7. UL Listed as SWD (switching duty) rated suitable for switching 120 Vac fluorescent lighting loads.
  8. Available in single pole construction and can be mounted in any single pole space which will accept a standard QOB. These circuit breakers can be turned ON or OFF or RESET with a special key (Catalog No. QOK10) included with the circuit breaker. These circuit breakers are UL Listed and available as shown in the table.
  9. 10–30 A circuit breakers are suitable for use with 60°C or 75°C conductors. 35–60 A circuit breakers are suitable for use with 75°C conductors.
  10. UL Listed 5,000 AIR on 3Ø corner grounded delta systems.
  11. DC Rating is not available on indicated products.
  12. UL Listed as HACR type for use with air conditioning, heating, and refrigeration equipment having motor group combinations and marked for use with HACR type circuit breakers.
  13. QOB2150VH uses 4 pole spaces. QOB3110VH, QOB3125VH, and QOB3150VH each use 6 pole spaces. 40A maximum circuit breaker mounted opposite. Use with 75 °C wire only.
  14. UL Listed for use on circuit 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 QOB circuit breakers.
  15. QO arc-fault circuit breakers provide branch feeder protection (for example, QO115AFI) or combination protection (for example, QO115CAFI) as required by the NEC and local code adoption, and comply with UL 1699.
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