Brochure
7-2
© 2019 Schneider Electric
All Rights Reserved
Selection Information Miniature Circuit Breakers
www.se.com/us
Class 500, 600
QO Miniature Circuit Breakers
QO™ Circuit Breakers
Circuit
Breaker
Type
Plug-on
QO QO-H QO-VH QH QOT
QO-
CAFI
QO-
VHCAFI
QO-
DF
QOVH-
DF
Bolt-on
QOB QOB-H
— — —
QOB-VH QHB
—
QOB-
CAFI
QOB-
VHCAFI
QOB-
DF
QOB-
VHDF
Unit Mount — — — — — — — — — — — — — —
Number of Poles 1 2 3 2 1 2 3 1
2, 3 [1]
1,2
3 1
1, 2 1, 2
1 1
Current Range (A)
10–70
10–200
[2]
10–100 15–100 15–70 15–125 15–100 15–70
15–
150
15–
30
15–30 15–30 15–20 15–20 15–20 15–20
Interrupting Ratings
UL/CSA
Rating
(kA)
(50/60 Hz)
120 Vac 10 10 10 10 22 22 22 22 22 65 65 10 10 22 10 22
120/240
Vac
10 10 10 10 22 22 22 22 22 65 65 10 10 22 — —
208Y/120 — — — — — — — — — — — — — — — —
240 Vac
[3]
— — 10 10 — — 22 —
22 [4]
— 65 — — — — —
277 Vac — — — — — — — — — — — — — — — —
480Y/277
Vac
— — — — — — — — — — — — — — — —
DC Ratings
48 Vdc
5 [5] 5 [5] 5 [5]
— — — — — — — — — — — — —
60 Vdc — — — — — — — — — — — — — — — —
65 Vdc — — — — — — — — — — — — — — — —
125 Vdc — — — — — — — — — — — — — — — —
250 Vdc — — — — — — — — — — — — — — — —
500 Vdc — — — — — — — — — — — — — — — —
IEC 60947-2
(50/60 Hz) [6]
IEC
(Icu)
— — — — — — — — — — — — — — — —
— — — — — — — — — — — — — — — —
Special Ratings
CCC — — — — — — — — — — — — — — — —
Fed. Specs
W-C-375B/GEN
X — — — X — — — — X — X X — X X
Other Standard
HACR [7]
NOM
HACR [7]
— — —
HACR
[7]
—
HACR [7] HACR [7]
Accessories and Modifications
Shunt Trip [8]
X X X X X X X X
X [9]
X X X — — — —
Undervoltage Trip
— — — — — — — — — — — — — — — —
Auxiliary Switches [8]
X X X X X X X X
X [9]
X X X — X — —
Alarm Switch [8]
X X X X X X X X
X [9]
X X X — X — —
Handle Operators
— — — — — — — — — — — — — — — —
Handle Padlock
Attachment
X X X X X X X X X X X X X X X X
Trip System Type
Thermal-magnetic
X X X X X X X X X X X X X X X X
Molded Case Switch X X X — — — — — — — — — — — — —
Dimensions (1P Unit Mount)
Dimensions
(1P Unit
Mount)
in. (mm)
Height 3.5 (89) [1] 4.75 (121)
Width
0.75 (19) [1]
Depth 2.92 (74) [1]
Pages page 7-11
7
MINIATURE AND MOLDED CASE
CIRCUIT BREAKERS
[1] For dimensions for QOB2150VH, QOB3110VH, QOB3125VH and QOB3150VH, see page 7-80
[2] 2P 150–200 A requires 4P width.
[3] See the Supplemental Digest, Section 3 for 3Ø corner grounded systems.
[4] 22 kA @ 240 Vac for 3P only.
[5] 1P and 2P, 10–70 A and 3P 10–60 A only.
[6] See the Supplemental Digest Section 10 for circuit breakers with IEC ratings.
[7] HACR on QO, QOB 1P 10–70 A, 2P 15–100 A, 3P 10–100 A; QOB-VH 1P 15–70 A, 2P 15–125 A, 3P 15–100 A.
[8] Factory-installed option only.
[9] Factory-installed accessories are not available on QOB-VH 2P150 A and 3P 110–150 A.
9/13/2019