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PowerPact H-, J-, and L-Frame Circuit Breakers
General Information
14
02/2016 © 2011–2016 Schneider Electric
All Rights Reserved
J-frame mission critical circuit breakers are selective with QO or E-frame circuit breakers per Table 6
when the amperage of the main circuit breaker is at least two times the amperage of the branch circuit
breaker.
L-frame mission critical circuit breakers are selective with QO-style and E-frame circuit breakers per
Table 7 when the amperage of the main circuit breaker is at least two times greater than the amperage
of the branch circuit breaker.
Table 6: J-Frame Selectivity with QO and E-Frame Circuit Breakers
1
1
Including AFI, CAFI, EPD and GFI circuit breakers.
Circuit Breaker
Voltage Current One-Line Diagram
MainBranch
J–W, 250 A
QO(B)
QO(B)-H
QO(B)-VH
QH
1P, 2P
10–30 A
240/120 V
120 V
18 kA
35–60 A 15 kA
70–125 A 12 kA
3P
10–30 A
240 V
208 V
15 kA
35–60 A 13 kA
70–125 A 10 kA
J–W, 250 A E-Frame 1P, 2P, 3P
15–125 A 240 V 18 kA
15–60 A
480Y/277 V
10 kA
70–125 A 7 kA
Table 7: L-Frame Selectivity with QO and E-Frame Circuit Breakers
1
1
Including AFI, CAFI, EPD and GFI circuit breakers.
Circuit Breaker
Voltage Current One-Line Diagram
Main Branch
L–W, 250 A
QO(B)
QO(B)-H
QO(B)-VH
QH
10–60 A
240 V
18 kA
70–125 A 10 kA
L–W, 400 A
L–W, 600 A
QO(B)
QO(B)-H
QO(B)-VH
QH
15–150 A 240 V 30 kA
L–W, 250 A
L–W, 400 A
L–W, 600 A
E-Frame 15–125 A
240 V 30 kA
480Y/277 30 kA
FAULT
Load
Load
QO 20 A 1P
QO 100 A 2P
J-Frame Mission Critical Circuit Breaker
FAULT
Load
Load
QO 20 A 1P
QO 100 A 2P
L-Frame Mission Critical Circuit Breaker