Siemens 3AH3 - Page 52

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