SMA Solar Technology AG
12 Technical Data
Operating Manual
MC-BOX-12-3-20-BE-en-10
41
Connection of PV system
Connection of NA-Box / Grid Connect Box
Connection of grounding
Auxiliary electric circuits
Number of terminals
1 x 3-phase
Rated power
138 kW
Rated operating voltage between L and N
230 V
Rated operating voltage between L1 and L2
400 V
AC current at rated values
3 x 200 A
Terminals for connection N, PE, L1, L2, L3
Spring-cage terminals
Maximum connectable conductor cross-section
150 mm
2
Unaffected short-circuit current / maximum relative rated
short-circuit current
10 kA
Maximum permissible back-up fuse
200 A
Number of terminals
1 x 3-phase
Rated input power
138 kW
Rated operating voltage between L and N
230 V
Rated operating voltage between L1 and L2
400 V
Rated current / AC input current
3 x 200 A
Terminals for connection N, PE, L1, L2, L3
Spring-cage terminals
Maximum connectable conductor cross-section
150 mm²
Maximum unaffected short-circuit current / maximum relative
rated short-circuit current
10 kA
Maximum permissible back-up fuse
200 A
Width across flats for hexagon screws on the grounding busbar
AF 17
Maximum torque
15 Nm
Maximum connectable conductor cross-section
120 mm²
Fuse
10x38 cylinder fuse
Maximum permitted fuse rating
1 A
