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3VT4 Molded Case Circuit Breakers up to 1000 A
Circuit breakers, Switch disconnectors
5/5
Siemens LV 36 · 2008
5
■
Technical specifications
✔
available,
-- unavailable
1) In case circuit breaker connection is reversed (input terminals 2, 4, 6 out-
put terminals 1, 3, 5),
I
cu
does not change.
Specifications
3VT4 circuit breakers
Switch disconnectors
Type
Standards
EN 60 947-2, IEC 947-2
EN 60 947-3, IEC 947-3
Approval marks
Number of poles
3
Rated current
I
n
A
315, 630, 800, 1000
--
Rated normal current
I
u
A
1000
Rated operational current
I
e
A
--
1000
Rated operational voltage U
e
V
AC max. 690
AC max. 690
DC max. 440
Rated frequency f
n
Hz
50/60
Rated impulse withstand voltage U
imp
kV 8
Rated insulation voltage U
i
V
690
Utilization category (selectivity) AC 690 V
A, B
--
Utilization category (switching mode)
AC 690 V
DC 440 V
--
--
AC-23 B
DC-23 B
Rated short-time withstand current U
e
=AC 690 V
I
cw
/t
15 kA/1 s
15 kA/1 s
Rated ultimate short-circuit breaking
capacity (rms value)
1)
I
cu
/U
e
AC 85 kA/230V
AC 65 kA/415V
AC 45 kA/500V
AC 20 kA/690V
--
Off-time at
I
cu
30 ms
--
Rated short-circuit service breaking
capacity (rms value)
I
cs
/U
e
AC 45 kA/230V
AC 36 kA/415V
AC 30 kA/500V
AC 20 kA/690V
--
Rated short-circuit making capacity
(peak value)
I
cm
/U
e
140 kA/AC 415 V
30 kA/AC 415 V
30 kA/DC 440 V
Losses per pole at
I
n
= 250 A
W 100
Mechanical endurance
cycles 10000
Electrical endurance (U
e
= AC 415 V )
cycles 4000
Switching frequency
cycles
/hr
120
Operating force
N 230
Front-side device protection
IP40
Terminal protection
IP20
Operating conditions
Reference ambient temperature
°C 40
Ambient temperature range
-40 ... +55
Working environment
dry and tropical climate
Degree of pollution
3
Max. elevation
m 2000
Seismic resistance
Hz
3g (8 ... 50)
Design modifications
Front/rear connection
✔
/
✔
Plug-in design
--
Withdrawable design
✔
Accessories
Switches-auxiliary/relative/signal/early
✔
/
✔
/--/--
Shunt trip/with signal switch
✔
Undervoltage release/with early switch with signal switch
✔
/--
Manual front operating mechanism/lateral operating mechanism
right/left
✔
/
✔
Mechanical interlocking to the manual operating mechanism,
by Bowden wire
✔
/
✔
Motorized operating mechanism/with operations counter
✔
/
✔
Locking-type lever
✔
Bolt sealing inset/additional cover for overcurrent release
✔
/--