Siemens NXAIR M - Before You Call; Service Contact; Operating the Circuit-Breaker Panel

Technical data
14 NXAIR M 139-2021.9 / 07
4.6 Panel dimensions
Width
Panel type
I
k
[kA]
I
r
[A]
Width [mm]
Circuit breaker panel,
disconnecting panel
25
≤ 1250
800
2000/2500
1000
Metering panel
─
800
Circuit breaker panel with
HV HRC fuse
─
800
Bus sectionalizer
≤ 1250
2 × 800
2000/2500
2 × 1000 or
1 × 1000 with 1 × 800
Bus coupler
≤ 1250
2 × 800
2000/2500
2 × 800 or
2 × 1000
Height
Panel design
Height [mm]
With standard low-voltage compartment
2510
With high low-voltage compartment
2550
With natural ventilation
2700
With pressure relief duct and arc absorber
2750
With additional compartment for busbar components
2770
Depth
Panel design
Depth [mm]
Single busbar
1600
Circuit-breaker panel for back-to-back arrangement (panel A)
1750
Disconnecting panel for back-to-back arrangement (panel A)
Circuit-breaker panel for back-to-back arrangement (panel B)
1600
Disconnecting panel for back-to-back arrangement (panel B)
4.7 Room planning
According to chapter 6 in the Installation Instructions with order number: 139-2019.9
4.8 Operating conditions
NXAIR M switchgear is designed for normal indoor operating conditions according to IEC 62271-1. In this
respect, the following limit values for the ambient air temperature must be complied with:
Limit value
Temperature [ºC]
Maximum value
+40*
Minimum value
-5
Maximum value of 24-hour mean
+35*
The site altitude may be 1000 m above sea level as a maximum.