Siemens UL 1066 User Manual

15 – 2
15.1.1 Breaker mounted key lock
When the key is removed, the circuit breaker is locked in the open position.
- OPEN the circuit breaker and discharge the closing spring  (page 23-2)
- Move the circuit breaker into the withdrawn position in the cradle  (page 23-3)
- Remove front panel  (page 23-4)
- Remove trip unit  (page 9-49)
Installing the locking mechanism
For key lock types: KIRK, Superior
DANGER
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.
WARNING
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.
NOTE
When removing the screws (1), ensure that the cylinder does not slip out of the lock. If this happens, the lock cannot be re-assembled.
1
(1)
2

Siemens UL 1066 Specifications

General

Brand	Siemens
Model	UL 1066
Category	Circuit breakers
Language	English