12 Technical Data
SMA Solar Technology AG
Operating manual
NA-BOX-12-3-20-BE-en-12
36
Auxiliary electric circuits
Rated operating voltage of the AC auxiliary circuits
230 V
Rated operating voltage of the DC auxiliary circuits
48 V
Fuse
10x38 cylinder fuse
Maximum permitted fuse rating for
F223
to
F227
1 A gG
Maximum permitted fuse rating for
F220
to
F222
6 A gG
Terminals for connecting the control cables
Spring-cage terminal
Minimum connectable conductor cross-section
0.75 mm²
Maximum connectable conductor cross-section
2.5 mm²
General Data
Number of line conductors
3
Permitted grid configuration
TN-S, TN-C-S and TT
Rated frequency
50 Hz
Frequency range
45 Hz to 52 Hz
Rated impulse withstand voltage
4 kV (2000 m)
Width x height x depth (with base)
600 mm x 1400 mm x 435 mm
(incl. 200 mm base)
Weight
109 kg
Maximum operating altitude above mean sea level
2000 m
Inner subdivision
Form 1 (no subdivision)
Exterior design
closed type
Installation
only fixed interior installation
permitted
Construction type
fixed components
Suitable for use by electrically qualified persons or unqualified persons
Installation of the system and
replacement of equipment by
electrically qualified persons
only / actuation of test buttons
and read-off of information by
unqualified persons permitted
Measures for protection against electric shock
Basic protection through
insulation materials and covers /
fault protection through
grounding conductors and short-
circuit protection devices /
personal protection through
residual-current devices