Siemens NXAIR Operating Instructions Manual page 79

Position
Panel type
(left to right)
1 st symbol (3) All types
2 nd symbol (4) Circuit-breaker
Other than
circuit-breaker
rd
3 symbol Circuit-breaker
(5; optional)
Other than
circuit-breaker
Verifying correspondence of withdrawable part version and panel version
A withdrawable part may only be inserted in a panel, if the coding symbols are identical in number and kind
with those on the low-voltage connector.
Carefully compare the coding symbols on the top side of the withdrawable part (1) with the
symbols on the top side of the low-voltage connector (2).
Fig. 127: Verifying correspondence of coding symbols on
110-0134.9 / 14
Function coded
Electromagnetic
interlock
Rated current and
basic control
functions
Rated current
Rated current and
extended control
functions
Rated current
withdrawable part and low-voltage connector (example)
NXAIR / ≤ 40 kA
Operating the circuit-breaker panel
Symbols
Without electromagnetic interlock
With electromagnetic interlock:
•
For racking mechanism of
withdrawable part
•
For operating mechanism of
feeder earthing switch
With electromagnetic interlock:
For racking mechanism of withdrawable part
With electromagnetic interlock:
For operating mechanism of
feeder earthing switch
Examples:
For single use of symbols or for use in combinations
of symbols
1
2
79