Siemens UL 1066 Operating Instructions Manual page 297

Frame size III: Remove circuit breaker feet
NOTE
Before removing the screws, support circuit breaker in such a way that the circuit breaker feet are not supporting the weight of the 
circuit breaker.
(3)
(2)
(1) Leave this area open
(2) Suitable support circuit breaker here
(3) Circuit breaker feet
1 Remove screws
2 Remove circuit breaker feet
Removing rear wall
3 Remove upper screws
4 Remove lower screws
5 Support circuit breaker
6 Rearwall carefully draw off to view the end position retaining springs
7 Note the position of the end position retaining springs
8 Separate and remove rearwall
9 Remove end position retaining springs
Removing upper fixed contacts
1 Remove three bolts and associated nuts
2 Remove fixed contact
(3)
(1) (2)
3
4
Size
6 mm
Frame size III only:
Size
8 mm
2
1
23 – 15