12 Technical Data SMA America, LLC
96 SB30-40-US-IA-en-33 Installation Manual
12.3 Protection Devices
12.4 DC Disconnect
Specifications subject to change without notice.
12.5 Torques and Cable Sizes
DC reverse polarity protection Short-circuit diode
AC short-circuit current capability Software-controlled
AC overcurrent protection Current-controlled
Grid monitoring (SMA Grid Guard
®
2) Yes
Maximum DC input current 30 A
Maximum DC short-circuit current 36 A
Maximum system voltage 600 V
Maximum nominal size for string fuses 20 A
Maximum AC operating current 34 A
Dimensions W x H x D 7
7
⁄
8
in. x 12
13
⁄
64
in. x 7
31
⁄
64
in.
(200 mm x 310 mm x 190 mm)
Weight 8 lb. (3.5 kg)
Enclosure NEMA 3R
Terminal Torque Cable size
AC & DC connecting terminal plate, inverter 15 in-lb. (1.7 Nm) 10 AWGto6AWG
(6 mm
2
to 16 mm
2
)
AC & DC connecting terminal plate,
DC Disconnect
15 in-lb. (1.7 Nm) 10 AWG to 6 AWG
(6 mm
2
to 16 mm
2
)
"COMBINED" spring terminal, DC Disconnect ‒ 10 AWG to 6 AWG
(6 mm
2
to 16 mm
2
)
Ground terminals PV protective conductor/
DC protective conductor, DC Disconnect
15 in-lb. (1.7 Nm) 10 AWG to 6 AWG
(6 mm
2
to 16 mm
2
)
Screws for attaching the inverter and the
DC Disconnect to the wall mounting bracket and
closing the DC Disconnect cover
44 in-lb. (5 Nm) ‒
Screws for the enclosure lid of the inverter 53 in-lb. (6 Nm) ‒
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