Technical Data Bulletin

7-12
© 2020 Schneider Electric
All Rights Reserved
12/2/2020
QO™ and QOU Miniature Circuit Breakers QO Plug-On Circuit Breakers
www.se.com/us
Class 730, 731, 733 / Refer to Catalog: 0730CT9801
QO/QOB Ring Terminal
Table 7.2: 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
Table 7.3: Wire Sizes for QO/QOB Circuit Breakers
Circuit Breaker Type
Ampere Rating
[12]
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 and QO Tandem Circuit Breakers
QOT 1P Tandem
1 Space Required
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.
Table 7.4: QOT Tandem Circuit Breakers (CTL)—Not Compatible with Plug-on
Neutral Systems
Ampere Rating [12] Cat. No. [13]
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.
Pan Rail Slot
Rail Bead
Mounting Cam
Table 7.5: QO Tandem Circuit Breakers (non-CTL)—Compatible with Plug-on
Neutral Systems
Ampere Rating [12] Cat. No. [13]
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 [14]
30 A and 20 A —
7
MINIATURE AND MOLDED CASE
CIRCUIT BREAKERS
[12] 10–30 A circuit breakers are suitable for use with 60
o
C or 75
o
C conductors. 35–125 A circuit breakers are suitable for use with 75
o
C conductors.
[13] 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.
[14] Includes two circuit breakers (one QO2030 and one QO3020) and handle tie QOTHT.