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New generation IZM97, 99 low voltage air circuit breaker instruction manual
MN013010EN February 2020 www.eaton.com.cn
Section 4: Accessory devices
Prevent close cover—Complete access to the ON pushbut-
ton can be prevented by adding the prevent close cover to
the pushbutton cover.
Cassette safety shutters—Automatically operated insulating
type safety shutters are available for use with the drawout
cassette. When the drawout circuit breaker is levered from
the CONNECT position, the shutters automatically close to
cover the fixed primary contacts (Figure 4-13). When the
circuit breaker is levered into the cassette, the shutters auto-
matically open, permitting primary connections to be made
(Figure 4-14).
Figure 4-15 Cell switch (drawout position indicator)
unmounted
Figure 4-16 Cell switches mounted on cassette
Figure 4-17 Door escutcheon and gasket
Figure 4-13 Safety shutters in CLOSED position
Figure 4-14 Safety shutters in OPEN position
Cassette cell switches—The cassette cell switches are com-
partment position switches for drawout circuit breakers. They
are available in a 2a 2b contact configuration, and mount on
the right side of the cassette (Figure 4-15 and Figure 4-16).
Refer to the ratings in Table 4.4 for cell switch contact infor-
mation. One or more cell switches can be mounted to oper-
ate at the WITHDRAWN, TEST, or CONNECT position.
Door escutcheon—The door escutcheon is a molded frame
used to seal the space between the circuit breaker and the
compartment door cutout. It is supplied with a mounting
gasket (Figure 4-17).
