QOU270 SQUARE D, QOU270 Datasheet - Page 23

• Manufacturer Part Number: QOU270
• Description: Thermal Magnetic Circuit Breaker
• Manufacturer: SQUARE D
• Type: Thermal/Magneticr

Specifications of QOU270

• No. Of Poles: 2
• Current Rating: 70A
• Voltage Rating Vdc: 48V
• Voltage Rating Vac: 240V
• Mounting Type: DIN Rail
• Operating Voltage Max: 240VAC
• Actuator Type: Handle
• Brand/series: QOU Miniture — Low Ampere
• Number Of Poles: 2
• Special Features: Visi-Trip® Trip Indicator
• Voltage Rating: 120/240 V
• Voltage Ac: 240V
• Lead Free Status / Rohs Status: RoHS Compliant part

Curve 730-4
09/2005
10000
9000
8000
7000
6000
5000
4000
3000
2000
1500
1000
.015
.009
.008
.007
.006
.005
900
800
700
600
500
400
300
200
150
100
1.5
.15
.09
.08
.07
.06
.05
.04
.03
.02
.01
90
80
70
60
50
40
30
20
15
10
.9
.8
.7
.6
.5
.4
.3
.2
.1
9
8
7
6
5
4
3
2
1
© 2005 Schneider Electric All Rights Reserved
1 CYCLE
1
(60 Hz)
/
2
(60 Hz)
CYCLE
MULTIPLES OF RATED CURRENT
MAXIMUM INDIVIDUAL POLE TRIP TIMES
AT 25°C BASED ON NEMA AB-4, 1991
QOU Miniature Circuit Breakers and Switches
MULTIPLES OF RATED CURRENT
25 A
20 A
15 A
10000
9000
8000
7000
6000
5000
4000
3000
2000
1500
1000
900
800
700
600
500
400
300
200
150
© 2005 Schneider Electric All Rights Reserved
This curve is to be used for application and coordination purposes only. The
EZ-AMP overlay feature at the bottom of the page should be used during
coordination studies.
All time/current characteristic curve data is based on 40°C ambient cold start.
Terminations are made with conductors of appropriate length and ratings.
QO-K
QO-H, QO-HVH
QO-HM, QO-HID, QO-EM, QOU-HM, QOU-VH
QO, QOU, QO-HID, QO-EM, QO-VH, QH, QOU-VH
QO, QOU, QO-HID, QO-VH, QH, QOU-VH
QO, QOU, QO-HID, QO-VH, QH, QOU-VH
QO-EM
QO, QOU, QO-HID, QO-VH, QH, QOU-VH
QO-WH
QO-SWN
QO-SWN
QO-PL
QO-PL
Circuit Breaker Prefix
MAXIMUM CLEARING TIME
(AT 50 Hz)
CHARACTERISTIC TRIP CURVE NO. 730-4
QO
®
25 20 15
MOLDED CASE CIRCUIT BREAKERS
(AT 60 Hz)
CIRCUIT BREAKER INFORMATION
Tripping Curves
Continuous
Ampere
15 & 20
15 & 20
15 & 20
Rating
15–25
15–25
15–25
15–25
25
25
25
25
25
25
(Replaces 0730TC8704R5/95)
1
/
Maximum
1 CYCLE
Drawing No. 48095-730-04
2
120/240
120/240
120/240
120/240
120/240
120/240
120/240
(50 Hz)
Voltage
(50 Hz)
120
240
240
240
120
240
CYCLE
AC
Curve No. 0730TC0504
September 2005
Number
Poles
1, 2
of
1
2
1
2
3
2
3
2
2
3
2
3
TM
100
90
80
70
60
50
40
30
20
15
10
9
8
7
6
5
4
3
2
1.5
1
.9
.8
.7
.6
.5
.4
.3
.2
.15
.1
.09
.08
.07
.06
.05
.04
.03
.02
.015
.01
.009
.008
.007
.006
.005
23