Siemens SENTRON - Page 184

Technical specifications
11.1 Technical specifications 3KC4 and 3KC8 from 250 A to 1000 A
184 Manual, 08/2017, L1V30368969104A-02
3KC4.38
3KC8.38
3KC4.42
3KC8.42
3KC4.46
3KC8.46
3KC4.48
3KC8.48
3KC4.50
3KC8.50
Operational power in compliance with IEC 60947-3
• AC-23 A/B 415 V
kW 110 220 335 450 700
• AC-23 A/B 690 V
kW 110 110 400 400 630
Short-circuit behavior
Short-circuit current ratings in compliance with IEC 60947-6-1
• Short-time withstand current
(
I
cw
, 60 ms, 415 V)
kA 10 at 30 ms 10 at 30 ms 12.6 20 20
• Short-circuit current making
capacity (
I
cm
, 415 V)
kA 17 17 25.2 40 40
Short-circuit current ratings in compliance with IEC 60947-3
• Short-time withstand current
(
I
cw
, 60 ms, 415 V)
kA 8 at 690 V 8 at 690 V 10 at 690 V 35 35
• Short-circuit current making
capacity (
I
cm
, 415 V)
kA 22 at 690 V 30 at 690 V 17 at 690 V 73.5 73.5
Conditional short-circuit current with fuse
• Continuous current of upstream
fuse
A 250 400 630 800 1000
• Conditional short-circuit current
with fuse (690 V) IEC 60947-3
kA 50 50 50 50 50
• Conditional short-circuit current
with fuse (415 V) IEC 60947-6-1
kA 50 50 50 50 50
Let-through current of gG fuse at
415 V; max. permissible
kA 22 30 42 51 60
I
2
t value of the gG fuse at
400/500 V; max. permissible
kA
2
s 200 600 3000 6000 6300
Transfer switching properties
Switching time I-0 & II-0 s 0.5 0.5 0.6 1.4 1.4
Switch-off time I-0-II & II-0-I
IEC 60947-6-1
s 0.4 0.4 0.4 1.4 1.4
Transfer time I-0-II & II-0-I
IEC 60947-6-1
s 0.9 0.9 1 2.8 2.8
Transfer time I-0-II & II-0-I
IEC 60947-6-1 with source monitoring
s 1 1 1.1 3.1 3.1
Motor operator rated apparent
power at 230 V AC
VA 115 115 150 184 184
Motor operator peak inrush current
at 230 V AC
A 1.2 1.2 1.2 2 2