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Standards IEC 60947-1, IEC 60947-3, VDE 0660 Part 107
Disconnector Type 3KE42 3KE43 3KE44 3KE45
Rated continuous current I
u
A 250 400 630 1000
Rated operating voltage U
e
50 Hz/60 Hz AC V 690
DC V 440 (3 conducting paths connected in series)
V 220 (2 conducting paths connected in series)
Rated short-circuit making capacity
at 690 V AC 50Hz/60 Hz kA (peak value) 35 35 60 60
Rated short-circuit making capacity
with upstream fuses
at 690 V AC 50Hz/60 Hz kA (peak value) 105 105 105 84
Rated conditional short-circuit
current with upstream fuses
at 690 V AC 50 Hz/60 Hz kA (RMS value) 50 50 50 40
Switching capacity (feed from either the top or bottom)
at 400 V AC
Breaking current I
c
(cos  = 0.35) A (RMS value) 1000 1000 2520 2520
Rated operating current I
e
at
AC-21A A 250 440 630 1000
AC-22A A 250 330 630 800
AC-23A A 125 125 315 315
at 500 V AC
Breaking current I
c
(cos  = 0.35) A (RMS value) 1000 1000 2520 2520
Rated operating current I
e
at
AC-21A A 250 400 630 1000
AC-22A A 250 330 630 800
AC-23A A 125 125 315 315
at 690 V AC
Breaking current I
c
(cos  = 0.35) A (RMS value) 1000 1000 2520 2520
Rated operating current I
e
at
AC-21A A 250 400 630 1000
AC-22A A 250 330 630 800
AC-23A A 125 315 315 315
at 440 V DC (3 conducting paths connected in series)
Breaking current I
c
(L/R = 5 ms) A 1000 1000 2520 2520
Rated operating current I
e
at
DC-21A A 250 400 630 1000
DC-22A A 250 250 630 630
Technical data: Switch disconnectors 3KE
The complete
series of
SENTRON switch
disconnectors
without fuses:
3LD, 3KA, 3KE