Siemens 3AH3 Instruction Manual page 52

Table 11: Type 3AH vacuum circuit breaker ratings (new "constant kA" ratings basis) (continued)
Interrupting
time
5
Circuit breaker
type
ms/cycles
5-3AH-31.5 83/5
5-3AH-40 83/5
5-3AH-50 83/5
5-3AH-63 83/5
7-3AH-40 83/5
15-3AH-20 83/5
15-3AH-25 83/5
15-3AH-31.5 83/5
15-3AH-40 83/5
15-3AH-50 83/5
15-3AH-63 83/5
15.5-3AH-20 83/5
15.5-3AH-25 83/5
15.5-3AH-31.5 83/5
15.5-3AH-40 83/5
27-3AH-20 83/5
27-3AH-25 83/5
38-3AH-20 83/5
38-3AH-25 83/5
38-3AH-31.5 83/5
38-3AH-40 83/5
52
Permissible
Max. sym.
tripping delay
interrupting (I)
(y)
s kA rms sym
2 31.5
2 40
2 50
2 63
2 40
2 20
2 25
2 31.5
2 40
2 50
2 63
2 20
2 25
2 31.5
2 40
2 20
2 25
2 20
2 25
2 31.5
2 40
% dc Short-time
component current (I) (3 s)
% kA rms
47 31.5
47 40
47 50
47 63
47 40
47 20
47 25
47 31.5
47 40
47 50
47 63
47 20
47 25
47 31.5
47 40
47 20
47 25
47 20
47 25
47 31.5
47 40
Closing and latching (momentary)
Asymmetrical Peak
(1.55 x I) (2.6 x I)
kA rms kA peak
49 82
62 104
78 130
98 164
62 104
31 52
39 65
49 82
62 104
78 130
98 164
31 52
39 65
49 82
62 104
31 52
39 65
31 52
39 65
49 82
62 104