QO™ Mounting Bases

Class 652 / Catalog 0730CT9801 , 0860CT0201

QO Mounting Bases

SN12125

QON120L125P1

QON3B

QO OEM Mounting Bases—UL Recognized Components

Voltage System

Main Lug
Rating

Spaces

Max. No.
1P Circuits

Mounting Bases
Cat. No.

Main Wire Size
AWG/kcmil

QO Plug-On Mounting Bases—Accepts Only QO Plug-On Circuit Breakers - Not Compatible With QO Plug-On Neutral Circuit Breakers

1Ø2W 240 Vac Max. 10 k AIC

(Without Neutral Assembly)

 70 A

2

2

QON2L70

14–4 Cu, 12–3 Al

125 A

4

4

SK9948BW

12–1/0 Cu/Al

125 A

4

4

SK9842

12–1/0 Cu/Al

125 A

6

6

SK9795

12–1/0 Cu/Al

125 A

6

6

SK9801

12–1/0 Cu/Al

150 A

6

6

SK9796BW

8–3/0 Cu/Al

150 A

8

8

SK9797

8–3/0 Cu/Al

QO Plug-On Mounting Bases—Accepts Only QO Plug-On Circuit Breakers - Not Compatible With QO Plug-On Neutral Circuit Breakers

1Ø3W 240 Vac Max. 10 k AIC

 40 A

2

2

QON2L40

14–6 Cu, 12–6 Al

 70 A

2

4

QON24L70

14–4 Cu, 12–3 Al

100 A

6

12

QON612L100

8–1/0 Cu/Al

100 A

8

16

QON816L100

8–1/0 Cu/Al

QO Plug-On Neutral Mounting Bases - Compatible with QO Plug-On Circuit Breakers and QO Plug-On Neutral Circuit Breakers

1Ø3W 240 Vac Max. 10 k AIC

125 A

12

24

QON112L125PI

4–2/0 Cu/Al

125 A

20

24

QON120L125PI

4–2/0 Cu/Al

200 A

12

24

QON112L200PI

4–250 Cu/Al

200 A

24

36

QON124L200PI

4–250 Cu/Al

200 A

24

36

QON124L200PDL

(2) 4–300 Cu/Al

200 A

30

40

QON130L200PI

4–250 Cu/Al

225 A

42

52

QON142L225PI

4–300 Cu/Al

225 A

52

72

QON154L225P

4–300 Cu/Al

225 A

60

72

QON160L225P

4–300 Cu/Al

QO Plug-On Mounting Bases—Accepts Only QO Plug-On Circuit Breakers - Not Compatible With QO Plug-On Neutral Circuit Breakers

3Ø3W 240 Vac Max. 10 k AIC

(Without Neutral Assy.)

125 A

12

12

QON312L125

4–2/0 Cu/Al

125 A

20

20

QON320L125

4–2/0 Cu/Al

125 A

24

24

QON324L125

4–2/0 Cu/Al

200 A

18

18

QON318L200

4–300 Cu/Al

200 A

24

24

QON324L200

4–300 Cu/Al

200 A

30

30

QON330L200

4–300 Cu/Al

225 A

42

42

QON342L225

4–300 Cu/Al

QO Plug-On Mounting Bases—Accepts Only QO Plug-On Circuit Breakers - Not Compatible With QO Plug-On Neutral Circuit Breakers

3Ø4W 240 Vac Max.

10 k AIC

 60 A

3

3

QON403L60N

12–6 Cu/Al

125 A

12

12

QON312L125I

4–2/0 Cu/Al

125 A

20

20

QON320L125I [1]

4–2/0 Cu/Al

125 A

24

24

QON324L125I

4–2/0 Cu/Al

200 A

18

18

QON318L200I

4–300 Cu/Al

200 A

24

24

QON324L200I

4–300 Cu/Al

200 A

30

30

QON330L200I [1]

4–300 Cu/Al

225 A

42

42

QON342L225I

4–300 Cu/Al

QO Plug-On Mounting Bases—Accepts Only QO Plug-On Circuit Breakers - Not Compatible With QO Plug-On Neutral Circuit Breakers

1Ø2W 240 Vac Max. 10 k AIC

(Without Neutral Assembly)

70 A

70 A

70 A

 1

 2

 3

 1

 2

 3

QOMB1

QOMB2

QOMB3

14–4 Cu 12–2 Al

14–4 Cu 12–2 Al

14–4 Cu 12–2 Al

QOB Bolt-On Mounting Bases—Accepts only QOB Bolt-On Circuit Breakers

3Ø3W 240 Vac Max.10 k AIC

(Without Neutral Assembly)

100 A

 3

 3

QON3B

12–1 Cu/Al

Solid Neutral Assemblies

Main Lug

Rating

Number of Branch Neutral Terminals

Cat. No.

Main Neutral Lug Wire Size
Cu/Al

Branch Neutral Terminal Wire Size

Cu

Al

125 A

125 A

200 A

200 A

225 A

12

20

12

30

42

SN12125

SN20

SN12200

SN30

SN42

4–2/0 AWG

4–2/0 AWG

4 AWG–300 kcmil

4 AWG–300 kcmil

4 AWG–300 kcmil

14–4 AWG

14–4 AWG

14–4 AWG

14–4 AWG

14–4 AWG

12–4 AWG

12–4 AWG

12–4 AWG

12–4 AWG

12–4 AWG

Accessories for US Mounting Base for UL489 C60

Description

Cat. No.

Main lug kit for US mounting bases, 1 lug per kit, for 6 AWG to 300 kcmil cable

USMBLK

Terminal cover for US mounting base; provides IP20 ingress protection per IEC 60529; suitable for jumper bars or cable

USMBTC

Footnotes

  1. Also IEC rated and CE marked for IEC 60439-1. Use only Square D brand Type QOXC, QOXD, QOHX and QOE circuit breakers for 415Y/240 Vac max. systems.

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