Siemens NXAIR User Manual

Operating the circuit-breaker panel
110-0134.9 / 14 NXAIR / ≤ 40 kA 91
The coding symbols characterize the functional properties of a panel version. The leftmost symbol (3)
characterizes the functional properties as regards electromagnetic interlocks.
A second symbol or a combination of two further symbols (4; 5) characterizes the panel version as regards
its current ratings.
In the case of circuit-breaker panels, the second symbol or the combination of two further symbols
characterizes the panel version additionally as regards its specific control functions. Circuit-breaker panels
with basic control functions are equipped with 1 shunt release and no other releases. Basic control functions
are coded by one symbol only. Circuit-breaker panels with extended control functions are equipped with a
second release (a second shunt release / a Ct release / an undervoltage release). Extended control
functions are coded by a combination of two symbols.
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 switching-
device truck
• For operating mechanism of
feeder earthing switch
With electromagnetic interlock:
For racking mechanism of switching-device
truck
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

Siemens NXAIR Specifications

General

Brand	Siemens
Model	NXAIR
Category	Industrial Equipment
Language	English