A

Size of opening in millimetres
measured at the widest point

B

Distance of guard from any dangerous part in millimetres

More than

6
10
12
15
20
22
30
40
50
55
150

6
10
12
15
20
22
30
40
50
55
150

40
40
65
90
140
165
190
320
400
450
800
800