Figure 43. Motor Operator Installed In A Standard Frame Circuit Breaker; Figure 44. Cover Mounted Key Lock And Operations Counter; Figure 45. Cassette-Mounted Key Lock - Eaton Magnum PXR User Manual

Magnum PXR and Power Defense SB low
voltage power circuit breakers user manual
Figure 43. Motor operator installed in a standard frame circuit
breaker
Mechanical accessories
There are 10 optional mechanical type accessories:
Operations counter
•
Off key lock
•
Cassette lock
•
Pushbutton cover
•
Prevent close cover
•
Lockout cover
•
Cassette safety shutters
•
Cassette cell switch
•
Terminal Block Extension Bracket
•
Door escutcheon
•
Waterproof cover
•
Mechanical interlock
•
Operations counter—The operations counter is a mechanical device
used to provide a record of the number of circuit operations . It is
mounted in the lower right portion of the circuit breaker and can be
viewed through the front cover (Figure 44) .
Operations
counter
OFF
key lock

Figure 44. Cover mounted key lock and operations counter

Off key lock—The off key lock secures the circuit breaker in the
OFF position . It is mounted in the lower right portion of the circuit
breaker and can be viewed through the front cover (Figure 44) . The
customer supplies the key lock . The provisions available are for Kirk,
Castell, Ronis, or CES .
Cassette lock—A cassette-mounted lock can be used in conjunction
with different interlocking schemes (such as main-tie-main)
(Figure 45) . The lock holds the circuit breaker trip-free in the
CONNECTED position, preventing it from being closed .
Up to three lock cylinders can be installed on one cassette .
Eaton supplies the lock provisions only . The customer is
responsible for the locks, which can be Kirk or Castell .

Figure 45. Cassette-mounted key lock

User Manual MN013016EN
Effective July 2022
EATON www.eaton.com
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