Siemens UL 489 Operating Instructions Manual page 37

Mounting Frame size II 3000 A and Frame size III
(1)
1 Remove 6 screws from the lower side of the sensor covers
2 Locate the connectors on the breaker terminals and secure them with screws M12, nuts and belleville washers. Screw orientation:
Nuts between terminals (facing each other). 
Do not tighten yet.
Upper terminals
Assemble the steel bushings (3) with screws M6x75 (5) and belleville washers. 
3
Do not tighten yet.
4 Push the connector against the steel bushings (3).
5 Tighten the center screws M12 (2) to the specified torque (85 Nm / 60 ft-lb)
6 Remove the steel bushings (3) and screws.
7 Tighten the outer screws M12 (5) to the specified torque (85 Nm / 60 ft-lb)
8 Assemble the steel bushings (3) and scews (5) again and tighten to the specified torque (8 Nm / 70 lb-in)
Lower terminals
9 Assemble the support (6) to the connector using self-tapping screws M6x25 (1) and tighten to the specified torque (8 Nm / 70 lb-in).
10 Assemble screws M6 (4) with belleville washers.
Do not tighten yet.
11 Push the connector and support against the circuit breaker housing.
12 Tighten the center screws M12 to the specified torque (85 Nm / 60 ft-lb). Tool access via the holes in the support.
13 Remove the M6 screws (4).
14 Tighten the outer screws M12 to the specified torque (85 Nm / 60 ft-lb). Tool access via the holes in the support.
15 Mount the M6 screws (4) again and tighten to the specified torque (8 Nm / 70 lb-in).
NOTE
Store or pack the frame on a pedestal of about 2" height, to protect the extending lower ends of the load connectors from 
being damaged.
(6)
(4)
(3) (2)
 (page
5-13).
(5)
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