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PowerPact H-, J-, and L-Frame Circuit Breakers
Trip Units
84
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For Micrologic trip unit features, see table 12 on page 22.
Table 61: Understanding the Names of Micrologic Electronic Trip Units
Protection Frame Measurements Applications
1: I
3: LI or LSI
5: LSI
6: LSIG
H- and J-frame
A: Ammeter
DIstribution
or
M: Motors
L: Long time
S: Short time
I: Instantaneous
G: Ground fault
L-frame
E: Energy
Examples
Micrologic 1.3 M Trip Unit Instantaneous only 400 or 600 A Motor
Micrologic 3.3 Trip Unit LI 250, 400, or 600 A Distribution
Micrologic 3.2S Trip Unit LSI 60, 100, 150, or 250 A Distribution
Micrologic 5.2A Trip Unit LSI—Ammeter 60, 100, 150, or 250 A Distribution
Ir tr Isd tsd Ii Ig tg
200
A
N 1/A 2/B 3/C
N1/A2/B3/C
Ir tr Isd tsd Ii (x In
255
kWh