Siemens UL 1066 Operating Instructions Manual page 136

Installing the BSS module
Hazardous voltage.
Will cause death, serious personal injury, or equipment damage.
Turn off and lock out all power supplying this device before working on this device.
High speed moving parts.
Can cause serious personal injury.
Discharge the closing spring before inspection and before carrying out any work on the circuit breaker.
Always discharge the closing spring before removing any covers or the front panel of the circuit breaker
Move the circuit breaker into the withdrawn position in the cradle

Replace the trip unit (page 9-49).
2
(1) BSS
(2) Actuating shaft
(3) BSS
(4) Ready-to-close indicator
(5) Drive shaft
(6) Carrier
9 – 56
DANGER
WARNING
(page 23-3)
1
(page
and Removing front panel (page
23-2).
23-4).
3
4