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Compact® NSF and NSJ 150 to 600 A Circuit Breakers
Section 13—Supplementary Technical Information
© 1995–2003 Schneider Electric All Rights Reserved
63
LET-THROUGH CURVES AT 480 V
Maximum Peak
Let-through
Current (Amperes)
Maximum Let-
through I
2
t
(Amperes
2
Seconds)
2 3 4 6 10 20 30 40 60 100 200 300
Maximum (*) Peak Let-Through Current (Amperes x 10
3
)
(*) Based on maximum values obtained throughout the circuit breaker development and UL test programs.
6
4
10
20
40
100
200
30
5
7
8
50
60
70
80
NSJ400/600
L
H
N
Available Short Circuit Current (RMS Symmetrical Amperes x 10
3
)
NSF250
NSF150**
**4P OSN Compact
®
NSF125/250N and NSF 150/250N Ratings Are Same As NSF250
06153222
2
3
5
2
3
5
2
3
5
2
10
5
10
6
10
7
2 3 4 6 10 20 30 40 60 100 200 300
L
N
H
N
H
NSF150**
NSF250
Maximum (*) Let-Through I
2
t (Amperes
2
Seconds)
(*) Based on maximum values obtained throughout the circuit breaker development and UL test programs.
Available Short Circuit Current (RMS Symmetrical Amperes x 10
3
)
NSJ400/600
**4P OSN Compact
®
NSF125/250N and NSF 150/250N Ratings Are Same As NSF250
06153223