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

Technical specifications
6.3 Technical specifications of 3WA circuit breakers
6.3.2.3

Ampacity, power loss

3WA11
Permissible load for fixed-mounted versions (bare copper connection bars)
For all connection types (except rear vertical main connections)
≤ 60 °C
≤ 70 °C
For rear vertical connections
≤ 60 °C
≤ 70 °C
Only for horizontal connection copper bars painted black
1)
Permissible load for withdrawable versions
For all connection types (except rear vertical main connections)
≤ 55 °C
≤ 60 °C
≤ 70 °C
For rear vertical connections
≤ 55 °C (Cu bare)
≤ 60° C (Cu, bare)
≤ 70 °C
Power loss with 3-phase symmetrical load with rated current
Fixed-mounted
Withdrawable
6.3.2.4

Switching times, endurance (operating cycles)

3WA11
Switching times
Make time
Opening time
Electrical make time (through closing
coil)
Electrical opening time (through
shunt trip)
Electrical opening time (through
instantaneous undervoltage release)
Opening time through electronic trip
unit
Make time through short-time excited closing coil (5% OP)
1)
Opening time through short-time excited shunt trip (5% OP)
2)
Opening time with short-time-delayed undervoltage release: 200 ms
3)
492
630 A 800 A
A 630 800
A 630 800
A 630 800
A 630 800
A 630 800
A 630 800
A 630 800
A 630 800
A 630 800
A 630 800
W 30 45
W 55 85
630 A 800 A
ms 35 35
ms 38 38
ms 80 / 50 80 / 50
1) 1)
ms 80 / 50 80 / 50
2) 2)
ms 80 80
3) 3)
ms 50 50
AC
1000 A 1250 A 1600 A
1000 1250 1600
1000 1250 1600
1000 1250 1600
1000 1250 1600
1000 1250 1600
1000 1250 1600
1000 1210 1490
1000 1250 1600
1000 1250 1600
1000 1250 1545
70 105 135
130 205 310
AC
1000 A 1250 A 1600 A
35 35 35
38 38 38
80 / 50 80 / 50 80 / 50
1) 1) 1)
80 / 50 80 / 50 80 / 50
2) 2) 2)
80 80 80
3) 3)
50 50 50
Equipment Manual, 02/2023, 92310000002-06
2000 A 2500 A
2000 2500
1)
2000 --
2000 2500
1)
2000 2500
2000 --
1930 --
1780 --
2000 2500
2000 2370
1855 2060
240 360
440 600
2000 A 2500 A
35 35
38 38
80 / 50 80 / 50
1) 1)
80 / 50 80 / 50
2) 2)
80 80
3) 3) 3)
50 50
3WA1 air circuit breaker