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28 – 2
I
2
t
sd
Delay time for S tripping based on formula I
2
t
sd
= constant
I
4
t
Delay time-current relationship based on formula I
4
t = constant
I-tripping
Instantaneous tripping (short-circuit)
I
ab
Operating value for load shedding
I
an
Operating value for load restore
I
cs
Rated operational short-circuit breaking capacity
I
cu
Rated ultimate short-circuit breaking capacity
I
cw
Rated short-time withstand current
ID
Identification number
IEC
International Electrotechnical Commission
I
g
Current setting value for G-tripping
I
i
Current setting value for I-tripping
I
IT
Single-pole short-circuit test current (IT systems)
I
N
Current setting value for N-tripping
I
n
Rated current (value of Rating Plug)
I
n max
Max. possible rated current
I
R
Current setting value for L-tripping
I
sd
Current setting value for S-tripping
L1
Phase 1
L2
Phase 2
L3
Phase 3
L-tripping
Long-time delayed tripping (overload)
LED
Light emitting diode
M
Motor
MOC
Mechanism Operated Auxiliary Conntacts
N
Neutral pole
NC
Normally closed contact
NO
Normally open contact
N-tripping
Neutral (overload) tripping
PIDG
Ring lug style (Trademark of AMP)
PZ 3...6
Crimping tool (Weidmüller GmbH)
S
1/2/3
Circuit breaker
1/2/3
(mutual mechanical interlocking module)
S1
Contact position-driven auxiliary switch
S10
Switch Electrical Closed
S11
Motor cut-off switch
S12
Motor disconnect switch
S13
Cut-off switch for remote reset
S14
Cut-off switch for shunt trip F1 (fast operation)
S15
Cut-off switch for closing coil CC (fast operation)
S2
Contact position-driven auxiliary switch
S20
Signaling switch for "ready-to-close"
S22
Signaling switch for 1st shunt trip
Summary of Contents for UL 489
Page 36: ...5 21 Frame size II 3000 A Frame size III 1 Holes 14 mm 0720 1 0721_nu ...
Page 63: ...7 2 Horizontal connectors 0733_nu top view ...
Page 64: ...7 3 Rear vertical connectors 0734_nu top view rear view ...
Page 65: ...7 4 Front connectors 0736_nu front view top view ...
Page 66: ...7 5 Front connectors and pressure wire terminals 0737_nu top view front view ...
Page 67: ...7 6 7 2 Frame size II fixed mounted version 0494 3_nu ...
Page 68: ...7 7 Class C always 0494 5_nu top view rear view ...
Page 69: ...7 8 2500 0738_nu LH side view front view ...
Page 71: ...7 10 7 4 Frame size III fixed mounted version 0495 1_nu LH side view ...
Page 72: ...7 11 0495 2_nu top view top view ...
Page 73: ...7 12 0495 3_nu top view rear view ...
Page 75: ...7 14 7 5 Door cut outs fixed mounted circuit breaker Frame size I 0735_nu ...
Page 76: ...7 15 Frame size II III 0496_nu ...
Page 77: ...7 16 7 6 Frame size I draw out version 0745_nu ...
Page 78: ...7 17 0746_nu rear view top view ...
Page 79: ...7 18 0747_nu bottom view ...
Page 80: ...7 19 0748_nu ...
Page 81: ...7 20 0749_nu ...
Page 82: ...7 21 7 7 Frame size II draw out version 0490 1_ul ...
Page 86: ...7 25 7 8 Frame size III draw out version ...
Page 87: ...7 26 ...
Page 88: ...7 27 ...
Page 89: ...7 28 7 9 Door cut outs for draw out circuit breakers Frame size I 0750_nu ...
Page 91: ...7 30 7 11 External sensor for neutral conductor WLNCT2 ...
Page 92: ...7 31 WLNCT3 ...
Page 107: ...9 5 I tripping Ground fault tripping ...
Page 351: ......