SMA AUTOMATIC SWITCH BOX M-20 - Manual (Page 9)

SMA Solar Technology AG 2 Safety
Installation Guide AS-BOX-M_L-IA-IEN110320 9
2.3.2 Symbols in the Automatic Switch Box
Symbol Description
Beware of dangerous electrical voltage.
The Automatic Switch Box operates at high voltages. The covers inside the
Automatic Switch Box serve as contact protection. Do not open covers
during operation.
Beware of dangerous electrical voltage.
After you have disconnected the Automatic Switch Box, the capacitors on
the control board will take 5 minutes to discharge. Wait 5 minutes before
opening the cover.