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Table 1: Maximum design values of Zs at disconnection times of 0·4 and 5 s for Hager BS EN 60 898 devices
Type	B curve		C curve		D curve
In	0·4 s	5 s	0·4 s	5 s	0·4 s	5 s
6	8 V	8·8 V	4 V	8·8 V	2·0 V	8·8 V
10	4·8 V	5·33 V	2·4 V	5·33 V	1·2 V	5·33 V
16	3 V	3·33 V	1·5 V	3·33 V	0·75 V	3·33 V
20	2·4 V	2·66 V	1·2 V	2·66 V	0·6 V	2·66 V
25	1·92 V	2·14 V	0·96 V	2·14 V	0·48 V	2·14 V
32	1·5 V	1·66 V	0·75 V	1·66 V	0·375 V	1·66 V
40	1·2 V	1·33 V	0·6 V	1·33 V	0·3 V	1·33 V
50	0·96 V	1·06 V	0·48 V	1·06 V	0·24 V	1·06 V
63	0·76 V	0·84 V	0·38 V	0·84 V	0·19 V	0·84 V