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PowerPact H-, J-, and L-Frame Circuit Breakers
Motor Circuit Protection
58
02/2016 © 2011–2016 Schneider Electric
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Table 54: Micrologic 2.2 M and 2.3 M Electronic Trip Unit
Rating: I
n
at 104°F (40°C)
1
30 A 50 A 100 A 150 A 250 A 400 A 600 A
Circuit Breaker
PowerPact H-frame XXXX———
PowerPact J-frame ————X ——
PowerPact L-frame —————X X
Overloads (or Thermal Protection): Long-Time Protection and Trip Class
Pick-Up (A)
Tripping between
1.05 and 1.20 FLA
FLA Value depending on trip unit rating (I
n
) and setting on rotary switch
I
n
= 30 AFLA =141618202122232425
I
n
= 50 AFLA =141721242729323642
I
n
= 100 AFLA =303541455156637180
I
n
= 150 A FLA = 58 71 78 86 91 97 110 119 130
I
n
= 250 A FLA = 114 137 145 155 163 172 181 210 217
I
n
= 400 A FLA = 190 210 230 250 270 290 310 330 348
I
n
= 600 A FLA = 312 338 364 390 416 442 468 484 520
Time Delay
Trip Class 5 10 20
Time Delay (s)
Depending on
selected trip class
t
r
1.5 x FLA 120 240 480 For warm start
6 x FLA 6.5 13.5 26 For cold start
7.2 x FLA 5 10 20 For cold start
S Short Circuits: Short-time protection with fixed time delay
Pick-up (A)
accuracy ±15%
I
sd
= FLA x 5678910111213
Time delay (ms)
t
sd
Non-adjustable
Non-tripping time 20
Maximum break time 60
I Short Circuit: Non-adjustable instantaneous protection
Pick-up (A)
accuracy ±15%
I
i
non-adjustable 450 750 1500 2250 3750 4800 7200
Time delay (ms)
Non-tripping time 0
Maximum break time 30 ms
Phase unbalance or phase loss
Pick-up (A)
accuracy ±20%
I
unbal
in % average current
2
30%
Time delay (ms) Non-adjustable
0.7 s during starting
4 s during normal operation
1
Motor standards require operation at 104°F (40°C). Circuit-breaker ratings are derated to take this requirement into account.
2
The unbalance measurement takes into account the most unbalanced phase with respect to the average current.