Inverters with transformers
Technical data Input (DC)
Max.recommended PV power (@ module STC) Max. DC power (@ cos ϕ = 1) Max. DC voltage DC nominal voltage MPP voltage range
Min. DC voltage / start voltage Max. input current / per string (at DC disconnector) Number of MPP trackers / fused strings per MPP tracker
Output (AC) AC nominal power
Max. AC apparent power
Nominal AC voltage / adjustable AC voltage range
AC grid frequency; range Max. output current Power factor (cos ϕ)
Phase conductors / connection phases Harmonics
Efficiency Max. efficiency CEC efficiency
Protection devices DC reverse-polarity protection AC short circuit protection
Galvanically isolated / all-pole sensitive monitoring unit Protection class / overvoltage category General data
Dimensions (W / H / D) in mm (in)
DC Disconnect dimensions (W / H / D) in mm (in) Packing dimensions (W / H / D) in mm (in)
DC Disconnect packing dimensions (W / H / D) in mm (in) Weight / DC Disconnect weight
Packing weight / DC Disconnect packing weight Operating temperature range (full power) Noise emission (typical)
Internal consumption: (night) Topology
Cooling concept Electronics protection rating / connection area
Features Display: text line / graphic Interfaces: RS485 / Bluetooth Warranty: 10 / 15 / 20 years
Certificates and permits (more available on request)
● Standard features ○ Optional features — not available Data at nominal conditions Type designation
40 dB(A) 0.1 W
LF transformer OptiCool
●/— ○/○
●/○/○
3000 W 3000 VA
208 V / ● 240 V / ● 183 – 229 V 211 – 264 V
13 A 1
1 / 2 < 4 %
96.0 % 96.5 % 95.0 % 95.5 %
● ●
●/— I / III
Sunny Boy 3000-US 208 V AC 240 V AC
3750 W 3200 W 500 V 250 V
175 – 400 V 200 – 400 V 175 / 228 V 200 / 228 V
17 A / 17 A; 36 A @ combined terminal
Sunny Boy 3800-US 240 V AC
4750 W n. s.
600 V 310 V
250 – 480 V 250 / 285 V
18 A / 18 A; 36 A @ combined terminal
1 / 4 (DC disconnector)
3800 W 3800 VA 240 V / —
211 – 264 V
16 A 1
3500 W 4000 W 3500 VA 4000 VA 208 V / ● 240 V / ● 183 – 229 V 211 – 264 V
60 Hz; 59.3 – 60.5 Hz 60 Hz; 59.3 – 60.5 Hz 60 Hz; 59.3 – 60.5 Hz 15 A
17 A 1
1 / 2 < 4 %
n. s. n. s.
● ●
●/— I / III
450 / 350 / 235 (17.8 / 13.8 / 9.3) 187 / 297 / 190 (7.3 / 11.7 / 7) 390 / 580 / 470 (15 / 23 / 19) 580 / 400 / 270 (23 x 16 x 11) 38 kg (84 lb) / 3.5 kg (8 lb) 44 kg (97 lb) / 4 kg (9 lb)
–25 °C ... +45 °C / –13 °F ... +113 °F
www.SMA-Solar.com www.SMA-Solar.com LF transformer OptiCool
●/— ○/○
●/○/○
37 dB(A) 0.1 W
LF transformer OptiCool
NEMA 3R / NEMA 3R NEMA 3R / NEMA 3R NEMA 3R / NEMA 3R
●/— ○/○
●/○/○ UL1741, UL1998, IEEE 1547, FCC Part 15 (Class A & B)
1 / 2 < 4 %
96.5 % 96.8 % 95.5 % 96.0 %
● ●
●/— I / III
Sunny Boy 4000-US 208 V AC 240 V AC
4375 W 5000 W 4200 W 600 V 310 V
220 – 480 V 250 – 480 V 220 / 285 V 250 / 285 V
18 A / 18 A; 36 A @ combined terminal
SB 3000US Accessories
RS485 interface of type 485USPB-SMC-NR
Bluetooth Piggy Back BTPBINV-NR
SB 3800-US-10
SB 4000US
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