Siemens SENTRON 3WA1 - Ampacity, Power Loss for DC; Switching Times, Endurance (Operating Cycles) for DC

Technical specifications
6.3 Technical specifications of 3WA circuit breakers
3WA1 air circuit breaker
500 Equipment Manual, 02/2023, 92310000002-06
6.3.3.7 Ampacity, power loss for DC
3WA12
DC
1000 A
2000 A
4000 A
Permissible load for fixed-mounted versions (copper connection bars, painted black)
≤ 55 °C
A
1000
2000
3640
≤ 60 °C
A
1000
2000
3500
≤ 70 °C
A
1000
2000
3250
Permissible load for withdrawable versions (copper connection bars, painted black)
For all connection types (except rear vertical main connections)
≤ 55 °C
A
1000
2000
3640
≤ 60 °C
A
1000
2000
3500
≤ 70 °C
A
1000
1950
3250
For rear vertical main connections
≤ 55 °C
A
1000
2000
3740
≤ 60 °C
A
1000
2000
3640
≤ 70 °C
A
1000
2000
3380
Power loss at I
n
with symmetrical load, complete device
Fixed-mounted
W
140
390
820
Withdrawable
W
280
770
1640
6.3.3.8 Switching times, endurance (operating cycles) for DC
3WA12
DC
1000 A
2000 A
4000 A
Switching times
Make time
ms
35
35
35
Opening time
ms
34
34
34
Electrical make time (through closing
coil)
ms
80 / 50
1)
80 / 50
1)
80 / 50
1)
Electrical opening time (through
shunt trip)
ms
80 / 50
2)
80 / 50
2)
80 / 50
2)
Electrical opening time (through
instantaneous undervoltage release)
ms
80
3)
80
3)
80
3)
1)
Make time through short-time excited closing coil (5% OP)
2)
Opening time through short-time excited shunt trip (5% OP)
3)
Opening time with short-time-delayed undervoltage release: 200 ms