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QO™ and QOU Miniature Circuit Breakers QO™ Mounting Bases
www.se.com/us
Class 652 / Catalog 0730CT9801, 0860CT0201
QO Mounting Bases
SN12125
QON2L40
QON120L1251
Table 7.17: QO OEM Mounting Bases—UL Recognized Components
Voltage System
Main Lug
Rating
1P
Spaces
Max. No.
1P
Mounting Bases
Cat. No.
Main Wire Size
AWG/kcmil
QO Plug-On Mounting Bases—For unit mounting QO, QO-GFI, QO-AFI and QO-EPD 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
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
100 A 12 12
QON12L100
12–2/0 Cu/Al
100 A 12 12
QON12L100SF[23]
6–2/0 Cu/Al
125 A 12 12
QON112L125I
4–2/0 Cu/Al
125 A 12 24
QON11224L125I
4–2/0 Cu/Al
125 A 16 16
QON116L125I
4–2/0 Cu/Al
125 A 16 24
QON11624L125I
4–2/0 Cu/Al
125 A 20 20
QON120L125I
4–2/0 Cu/Al
125 A 24 24
QON124L125I
6–2/0 Cu/Al
125 A 32 32
QON132L125I
4–2/0 Cu/Al
125 A 20 24
QON12024L125I
4–2/0 Cu/Al
150 A 24 24
QON124L150I
4–250 Cu/Al
200 A 12 12
QON124L200I
4–250 Cu/Al
200 A 12 12
QON12L200FTL [23]
4–250 Cu/Al
200 A 24 24
QON124L200I
4–250 Cu/Al
200 A 24 24
QON124L200DL [23] (2) 4–300 Cu/Al
200 A 30 30
QON130L200I
4–250 Cu/Al
225 A 42 42
QON142L225I
4–300 Cu/Al
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
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 [24]
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 [24]
4–300 Cu/Al
225 A 42 42
QON342L225I
4–300 Cu/Al
QO Plug-On Mounting Bases—For unit mounting QO, QO-GFI and QO-EPD 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—For unit mounting QOB, QOB-GFI, QOB-EPD circuit breakers
3Ø3W 240 Vac Max.10 k AIC
(Without Neutral Assembly)
100 A 3 3
QON3B
12–1 Cu/Al
Table 7.18: 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
Table 7.19: 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
7
MINIATURE AND MOLDED CASE
CIRCUIT BREAKERS
[23] Device comes with factory-installed sub-feed lugs.
[24] 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.
9/13/2019