Siemens NXAIR - Page 79

Operating the circuit-breaker panel
110-0134.9 / 14 NXAIR / ≤ 40 kA 79
Position
(left to right)
Panel type
Function coded
Symbols
1
st
symbol (3)
All types
Electromagnetic
interlock
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
2
nd
symbol (4)
Circuit-breaker
Rated current and
basic control
functions
Examples:
For single use of symbols or for use in combinations
of symbols
Other than
circuit-breaker
Rated current
3
rd
symbol
(5; optional)
Circuit-breaker
Rated current and
extended control
functions
Other than
circuit-breaker
Rated current
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
withdrawable part and low-voltage connector (example)
1
2