Technical Data SMA Solar Technology AG
90 SB20HF-30HF-IA-IEN120431 Installation Manual
Protective devices
General Data
DC reverse polarity protection Short‑circuit diode
Input‑side disconnection device Electronic Solar Switch
DC overvoltage protection Thermally monitored varistors
AC short‑circuit current capability Current control
Grid monitoring SMA Grid Guard 3
Maximum permissible fuse protection 25 A
Ground fault monitoring Insulation monitoring: R
iso
> 1 M Ω
Galvanic isolation Available
Width x height x depth with
Electronic Solar Switch
348 mm x 580 mm x 145 mm
Weight 17 kg
Length x width x height of packaging 600 mm x 400 mm x 450 mm
Transport weight 21 kg
Climatic category according to IEC 60721‑2‑1 4K4H
Operating temperature range − 25°C … +60°C
Maximum permissible value for relative humidity,
non‑condensing
100%
Maximum operating altitude above mean sea
level
3 000 m
Noise emission (typical) ≤ 38 dB(A)
Power loss in night operation < 1 W
Topology HF transformer
Cooling concept OptiCool: temperature‑controlled fan
Fan connection Designed for safe disconnection
in accordance with DIN EN 50178:1998‑04
Degree of protection according to IEC 60529 IP65
Protection class (according to IEC 62103) I
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