Siemens 3VA1 100 A Manual page 512

Molded case circuit breakers
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List of abbreviations
C.1 Table of abbreviations
Table C- 2
Sym-
bol/abbreviation
Δt
I
Δn
I
1
I
"
KG
I
t
2
I
B
I
b
I
cm
I
cn
I
cs
I
cu
I
cw
I
d
I
D
I
g
I
i
I
k
I
KD
I
K MAX
I
Kmaxline
I
n
I
nG
I
P
I
r
I
s
I
sc
I
sd
I
th
I
U
R
A
t
1
t
2
t
A
t
b
t
d
512
Meaning of symbols and abbreviations
Meaning
Delay time
Residual current; rated residual current; response current
Inrush current
Initial balanced short-circuit current
Let-through energy
Take-over current
Pickup value blocking protection
Making capacity; rated short-circuit making capacity
Rated breaking capacity; rated short-circuit breaking capacity
Maximum short-circuit breaking capacity (partial selectivity); rated service short-
circuit breaking capacity
Maximum short-circuit breaking capacity (full selectivity); rated ultimate short-circuit
breaking capacity
Rated short-time withstand current; rated short-time current
Prospective current; residual current; response residual current
Let-through current
Ground-fault protection; ground-fault release; ground-fault current setting value
Instantaneous tripping current; instantaneous short-circuit protection; instantaneous
magnetic protection; rated tripping current of instantaneous trip
Short-circuit current
Uninterrupted short-circuit current
Maximum short-circuit current
Uninterrupted short-circuit current of system
Rated operational current
Rated operational current (generator)
Rated peak withstand current, impulse short-circuit current
Thermal protection; setting current; response value; current setting value of adjust-
able overload protection (pickup value overload protection)
Limit current with selectivity; maximum short-circuit current for selectivity limit
Prospective current
Short-time delayed tripping current; response current of S protection; short-time
delayed short-circuit release; short-time delayed short-circuit protection; delay time
of S protection
Conventional free-air thermal current
Rated uninterrupted current
Contact resistance of exposed conductive part ground
Time of inrush current
Ramp up time
Safety clearance
Delay time (delay of blocking time)
Response time
3VA molded case circuit breakers
Manual, 04/2015, A5E03603177010-02

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