Siemens SENTRON 3WA1 - Page 503

Technical specifications
6.3 Technical specifications of 3WA circuit breakers
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
501
3WA12
DC
Endurance (operating cycles)
Breaking capacity D
Mechanical
Without
maintenance
10000
10000
10000
With
maintenance
4)
20000
20000
20000
Electrical
Without
maintenance
≤ 600 V
6000
6000
4000
With
maintenance
4)
20000
20000
20000
Breaking capacity E
Mechanical
Without
maintenance
10000
10000
10000
With
maintenance
4)
20000
20000
20000
Electrical
Without
maintenance
≤ 1000 V
1000
1000
1000
With
maintenance
≤ 1000 V
4)
2000
2000
2000
Without
maintenance
≤ 1500 V
5)
1000
1000
1000
With
maintenance
≤ 1500 V
4)
20000
20000
20000
4)
Maintenance means: Replace main contacts and arc chutes (see Chapter Inspection and maintenance
(Page 387))
5)
1500 V DC only with 4-pole non-automatic circuit breakers
Switching frequency
Breaking capacity D
Electrical
3-pole
45 / h
45 / h
45 / h
4-pole
60 / h
60 / h
60 / h
Breaking capacity E
Electrical
3-pole
45 / h
45 / h
45 / h
4-pole
60 / h
60 / h
60 / h