Type QT circuit breakers
Features and benefits

1/2 inch width-per-pole construction: dual and quad styles

Requires 1/2 the space of 1 inch width circuit breakers

SWD rated — 15 and 20 amp.

HACR rated

UL listed

CSA certified
Siemens type QT dual circuit breakers are 1 inch wide and
consist of (2) 1-pole breakers, in varying combinations of
ampere ratings from 15 to 30 amp.Type QT quad circuit
breakers are 2 inches wide and consist of either (1) 2-pole
and (2) 1-pole, or (2) 2-pole breakers. 2-pole constructions
range from 15-50 amps and are available with internal common trip.
All type QT circuit breakers are plug-in style and load terminals are provided with the units.They are rated for
120/240V AC and calibrated for 40C maximum ambient applications. Thestandard interrupting rating is 10k AIC.
Q1515
Q22020CT2
Dimensions (inches)
Breaker type
Length
Width
Depth
Dual
Quad
3-1/8
3-1/8
1
2
3
3
Selection information
QT dual breaker,(2) 1-Poles
10k AIC interrupting rating
Ampere
rating
QT quad breaker,(2) 2-Poles, common trip
10k AIC interrupting rating
Complete breaker unenclosed
Wire range
Catalog number
Cu
Al
Ampere
rating
Catalog number
#14 - #8
#12 - #8
15-15
Q21515CT2
Selection Information
15-15
Q1515
Selection
Information
QT Dual Breaker, (2) 1-Poles

Wire range
QT Quad Breaker, (2) 2-Poles, Non-Common Trip
15-20
#14 - #8
#12 - #8
Q1520
15-30
Q21530CT2
10k AIC
Interrupting Rating
10k
Interrupting
Rating
QT Dual Breaker,
(2) 1-Poles
QT Quad Breaker,
(2)AIC
2-Poles,
Non-Common
Trip

#14
- #8 Interrupting
#12 - #8 Rating 20-20
Q22020CT2
10k AIC 20-20
InterruptingQ2020
Rating
10k
AIC
Complete Breaker
Complete Breaker
Unenclosed
Wire Range #14 - #6
Unenclosed Q22050CT2
Wire Range
20-30
Q2030
#12 - #6
20-50
Ampere
Ampere
Complete
Breaker
Complete
Breaker
Rating
Catalog
Cu
Unenclosed
WireNumber
Range
Ampere Shipping:
12 per carton, 48 per master carton
Rating
Catalog
Cu
Al #14 - #8
15-15Number Q1515
15-15
15-20
20-20
20-30
#14
- #8
Q1520
Q1515
15-20
Al
Rating
#12 - #8
Rating
Unenclosed
Catalog Number
15-15
30-20
15-15
#12 - #8
Q21515
#14
- #8 30-25
Q22020
(Wt.Ampere
20 lbs.)
#12 -#14
#8 - #8
Catalog
Number
Cu
Wire
Range
Q23020CT2
Cu
Al
Q21515
#14 - #8
#14 - #6
Q2030
#12 - #6
30-30
Q23030
30-50
Q23050
SHIPPING:
12 per carton,
48 per
master carton (Wt.
20 lbs.)
Complete
breaker
unenclosed
Wire
range
Al
#12 - #8
#14-#8
#12-#8
#14-#6
#12-#6
#14-#8
#12-#8
#8-#6
#8-#4
#14-#6
#12-#6
#12
- #8 #14 - #8
Q23025CT2
#12 - #8
#14-#6
#12-#6
#14 - #8
#12 - #8
#14 - #6
#12 - #6
#12 - #6
#14-#6
#12-#6
30-50
#14 - #6
30-50
Q23050
#12
- #6
Q23050CT2
40-20
Q24020
40-20
#14 - #6

Q23030CT2
Q23030
#8 - #6
#14 - #6
#12 - #6
#8 - #6
#8 - #4
#8-#6
#8-#4

#8 - #6
Q24020CT2
#8 - #4
#8-#6
#8-#4
#8 - #4
rating
Catalog number
Cu40-20
Al
Q24020
#8 - #6
#8 - #4
40-30
Q24030
#8 - #6
#8 - #4
QT Quad
Breaker,
(1)1-Poles,
2-Pole& (2) 1-Poles,

40-30
Q24030
#8 - #6
#8
- #4
40-30
#8-#6
Q24030CT2
QT Quad
Breaker,
(1)
2-Pole
&
(2)
15-15
Q21515CT
#14 - #8
#12 - #840-40
Q24040
#8 - #6
#8 - #4
40-40
Q24040
#8 - #6
#8 - #4
Common TripCommon Trip

40-40
#8-#6
Q24040CT2
10k AICQ21520CT
Interrupting Rating
6 per
carton,
#14
- #8
- #8SHIPPING:
10k AIC 15-20
Interrupting
Rating
SHIPPING:
6 #12
per carton,
24 per master
carton
(Wt. 24
20 per
lbs.)master carton (Wt. 20 lbs.)
Shipping: 6 per carton, 24 per master carton (Wt. 20 lbs.)
Complete Breaker
Complete Breaker
15-25
Q21525CT
#14 - #8
#12 - #8
Unenclosed
Wire Range QT Quad Breaker,
QT
Breaker,
(2) Trip
2-Poles, Common Trip
Unenclosed
Wire Range
(2)Quad
2-Poles,
Common
Ampere
Ampere
Q21530CT
#14
#6 Interrupting
#12 - 10k
#6 AIC
Rating
Catalog
Al-AIC
Interrupting Rating
Rating 15-30
Catalog
Number
Cu Number Al Cu
10k
Rating
15-15
15-20
15-25
15-30
15-40
Q21515CT
#14 - #8
15-15 Q21540CT
Q21515CT
15-40
#12 -#14
#8 - #8
#14 - #8
Q21520CT
Q21520CT
15-20
#12 -#14
#8 - #8
#12 -#14
#8 - #8
#12 -#14
#6 - #6
15-50
Q21550CT
Q21525CT
#14 - #8
15-25
Q21525CT
Q21530CT
#14 - #6
15-30 Q22020CT
Q21530CT
20-20
#8 - #6
Q21540CT
15-40
Q21540CT
15-50
Q21550CT
#8 - #4
#8 - #6
#8 #12
- #6- #8
#8
- #4 Breaker
Complete
#8Rating
- #6
#12 - #8
Ampere
#8
- #4Number
Catalog
15-15
#12
- #6
#14
- #8
Q21515CT2
#12
- #815-15
#12 - #8
Ampere
20-20
#8 - #4
Complete Breaker
Unenclosed
Wire
Range
Unenclosed
Cu
Al
Catalog Number
Rating
Q22020CT2
20-20
#14 - #8
#12 - #8
Q22020CT2
15-50
20-30
Q21550CT Q22030CT
#8 - #6
#8 - #4
#14
- #6
30-20
#12
- #6
Q23020CT2
#14 - #6
#12 - #6
Q22020CT
#14 - #8
20-40
20-20 Q22040CT
Q22020CT
#12 - #8
#14 - #8
#830-30
- #6- #8
#12
Q23030CT2
#8
- #4 30-30
#14 - #6
#12 - #6
20-30
Q22030CT
20-50
Q22040CT Q22050CT
#8 - #6
#14 - #6
#12
#840-20
- #6- #6
#8
- #4 30-50
Q24020CT2
#8 - #6
#8 - #4
#8 - #4
#8 - #6
#8 - #4
Shipping: 6 per carton, 24 per master carton (Wt. 40-30
20
lbs.)
#8 - #4
40-30
Q24040CT2
20-30
20-40
20-50
#14 - #6
Q22030CT
20-40
Q22050CT
#12 - #6
#8 - #6
#8 - #4
Q22040CT
#8 - #6
#8 - #4
30-50
#8 - #4
Q22050CT
SHIPPING: 6 per 20-50
carton, 24 per master
carton (Wt. 20 lbs.)#8 - #6
40-40
Wire Range
Cu
#14
- #8
#12 - #8
Q21515CT2
20-20
#8 - #6
Al
Q23020
30-30
20-20

QT quad
breaker,(1)
2-Pole
& (2)
common
trip
Q1520
20-20
Q2202030-20
#14
#12 -1-Poles,
#8 - #8
- #8
20-20
Q2020
#14
#12 - #8
#14
- #8
#12 - #8
Q2020interrupting
30-20
Q23020
10k AIC
ratings
30-30
20-30
Q2030
#14 - #6
#12 - #6
Ampere
SHIPPING:
12 per carton, 48 per master carton (Wt. 20 lbs.)
Cu

30-20
Q23020CT2
Q23030CT2
Q23050CT2
Q23050CT2
40-20
Q24030CT2
Q24020CT2
#8
- #6
#8 - #4
Q24030CT2
#8
- #6
#8 - #4
#12 - #8
#14 - #8
#12 - #8
#14 - #6
#12 - #6
#14 - #6
#12 - #6
#8 - #6
#8 - #4
#8 - #6
#8 - #4
#8 - #6
#8-#4
Al
#14 - #8
 For
Non-CTL
version,
add
“NC”
to per
endmaster
of catalog
number.
6 per
carton,
24
carton
(Wt. 20
lbs.)
40-40
#8 - #6
For Non-CTL
version,SHIPPING:
add “NC” to end
of catalog
number.
SHIPPING:
6 per carton,
24 per masterQ24040CT2
carton (Wt. 20 lbs.)
 The 1-Pole
circuit
breakers
are always 15 or 20 amp. Example: The Q21540CT is
The 1-pole circuit breakers
are always
15 or 20
For Non-CTL
version,
addamp.
“NC” to end of catalog number.
SHIPPING: 6 per carton, 24 per master carton
(1)
2-Pole,is40
amp and
(2)and
1-Pole,
1515amp.
Example: The
Q21540CT
(1) 2-pole,
40 amp
(2) 1-pole,
amp.
#8-#4
#8 - #4
#8 - #4
(Wt. 20 lbs.)
The 1-pole circuit breakers are always 15 or 20 amp.
Example: The Q21540CT is (1) 2-pole, 40 amp and (2) 1-pole, 15 amp.
Knockout
Diagrams
Knockout
diagrams
Knockout Diagrams
Quad (Dual would be same profile, but 1” wide)
Quad
(dual would be same profile,
Dimensions
(Inches)
but 1”wide) dimensions (inches)
Quad (Dual would be same profile, but 1” wide)
Dimensions
(Inches)
2.38
2.38
.28
18
ON
TRIPPED
18
TRIPPED
RESET
3.12
2.22
24
2.78
R.69
.06
.24
.08
Pressure
Wire
R.69
Connector
.25
.50
Pressure
Wire
Connector
.24
Residential Products
.08
5400 Triangle Parkway
Norcross, GA 30092
Siemens Energy & Automation, Inc.
www.sea.siemens.com
Residential Products
5400 Triangle Parkway
Norcross, GA 30092
www.sea.siemens.com
Siemens is a registered trademark of Siemens AG.
Siemens
Industry,
Inc.
Siemens
is a registered
trademark of Siemens AG.
5400 Triangle Parkway
Norcross, GA 30092
3.12
2.22
RESET
.06
Siemens Energy & Automation,
Inc.
.25
.50
Bulletin RPPN-SQT98 (New) 3M1200OA Printed in U.S.A.
The information provided in this flyer contains merely
general descriptions or characteristics of performance
Subject to change without prior notice
Bulletin RPPN-SQT98 (New) 3M1200OA Printed in U.S.A.
which in case of actual use do not always apply as described
Order No.: CBFL-SQT98-1112
or which may change as a result of further development
All rights reserved
1-800-964-4114 Printed in USA
© 2012 Siemens Industry, Inc.
info.us@siemens.com
www.usa.siemens.com
1.0
1.5
.50
ON
24
2.78
2.0
.28
.75
.43
1.5
.50
.75
.43
2.0
1.0
of the products. An obligation to provide the respective
characteristics shall only exist if expressly agreed in the
terms of contract.
All product designations may be trademarks or product
names of Siemens AG or supplier companies whose use by
third parties for their own purposes could violate the rights
of the owners.