SUNNY BOY 3000US / 4000US
The Sunny Boy 3000US and 4000US are the first of the new “US” series of Sunny Boy string inverters. They have been updated with our most advanced technology and are designed specifically to meet the new IEEE 1547 requirements.
Their compact design makes them ideal for light commercial or residential use and the integrated DC disconnect makes installation more cost-effective. They are field configurable for positive ground systems making them more versatile than ever. Increased efficiency means better overall performance and shorter payback periods. Each are engineered and built to last and now come with a standard ten year warranty. Sunny Boy inverters are trusted worldwide to go the distance.
- CEC efficiency of up to 96 %
- 10 Year warranty standard, up to 20 years optional
- Certified to the new UL 1741/ IEEE 1547
- Integrated load-break rated DC disconnect switch
- Integrated fused series string combiner
- Sealed electronics enclosure and OptiCool
- Comprehensive SMA communications and data collection options
- Ideal for residential or light commercial applications
- Rugged cast aluminum outdoor rated enclosure
| Input Data (DC) | Sunny Boy 3000US | Sunny Boy 4000US |
| Recommended Max. PV Power (Module STC) |
3750 W | 4375 W @ 208 V / 5000 W @ 240 V |
| Max. DC Voltage | 500 V | 600 V |
| Peak Power Tracking Voltage | 175 V – 400 V @ 208 V, 200 V – 400 V @ 240 V |
220 V – 480 V @ 208 V, 250 V – 480 V @ 240 V |
| DC Max. Input Current | 17 A | 18 A |
| Number of Fused String Inputs | 2 (inverter), 4 x 15 A (DC disconnect) | 2 (inverter), 4 x 15 A (DC disconnect) |
| PV Start Voltage (adjustable) | 228 V | 285 V |
| Output Data (AC) | ||
| AC Nominal Power | 3000 W | 3500 W @ 208 V / 4000 W @ 240 V |
| AC Maximum Output Power | 3000 W | 3500 W @ 208 V / 4000 W @ 240 V |
| AC Maximum Output Current | 15 A @ 208 V, 13 A @ 240 V |
17 A |
| AC Nominal Voltage / Range | 183 – 229 V @ 208 V, 211 – 264 V @ 240 V |
183 – 229 V @ 208 V 211 – 264 V @ 240 V |
| 211 – 264 V @ 240 V, AC Frequency / Range | 60 Hz / 59.3 Hz – 60.5 Hz | 60 Hz / 59.3 Hz – 60.5 Hz |
| Power Factor | 0.99 @ nominal power | 0.99 @ nominal power |
| Efficiency | ||
| Peak Inverter Efficiency | 96.5 % | 96.8 % |
| CEC Weighted Efficiency | 95.0 % @ 208 V, 95.5 % @ 240 V | 95.5 % @ 208 V, 96.0 % @ 240 V |
| Mechanical Data | ||
| Dimensions W x H x D in inches | 17.8 x 13.8 x 9.3 | 17.8 x 13.8 x 9.3 |
| Weight / Shipping Weight | 84 lbs / 97 lbs | 88 lbs / 94 lbs |
| Ambient Temperature Range | –13 to +113 °F | –13 to +113 °F |
| Power Consumption: standby / nighttime | < 7 W / 0.1 W | < 7 W / 0.1 W |
| Topology | PWM, true sine wave, current source | PWM, true sine wave, current source |
| Cooling Concept | Low frequency transformer, true sinewave | Low frequency transformer, true sinewave |
| Mounting LocationIndoor / Outdoor (NEMA 3R) | Included/Included | Included/Included |
| Features | ||
| LCD Display | included | included |
| Lid Color: aluminum/red/blue/yellow | included/optional/optional/optional | included/optional/optional/optional |
| Communication: RS485 / Wireless | optional/optional | optional/optional |
| Warranty: 10-year | included | included |
| Compliance: IEEE-929, IEEE-1547, UL 1741, UL 1998, FCC Part 15 A & B | included | included |
Promotion Material
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Poster - Sunny Boy US (Solar Inverters) Type: Promotion Material Language: USA Document number: SBPOST-21:AUS2007 |
187 KB |
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Sunny Communication Poster Type: Promotion Material Language: USA Document number: SCOMPOSTUS-11:AE2406 |
272 KB |
Data sheet
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SUNNY BOY 3000US / 4000US - The best in their class Type: Data sheet Language: USA Document number: SUNNYBOY34-DUS084110 Version number: 1.0 |
150 KB |
Warranty
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SMA Factory Warranty (SB 700US, SB 3000US, SB 4000US, SB 5000US, SB 6000US, SB 7000US) Type: Warranty Language: USA Document number: FACTORYWARRAN-HUS085011 Version number: 1.1 |
77 KB |
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SMA Factory Warranty Type: Warranty Language: USA Document number: SBEXTWARRANTY-FUS084910 Version number: 1.0 |
90 KB |
Installation Guide
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Sunny Boy 3000US / 4000US - Installation Guide Type: Installation Guide Language: USA Document number: SB3000US-4000US-IUS083122 Version number: 2.2 |
5.966 KB |
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Sunny Boy 3000US / 4000US - Installation Guide Type: Installation Guide Language: USA Document number: SB3000US-4000US-11:SE1607 Version number: 1.2 |
4.220 KB |
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SMA DC-Disconnect - Additional Information for Installation of the SMA DC-Disconnect Type: Installation Guide Language: USA Document number: DC_Disc_SB3000-4000-IUS082210 Version number: 1.0 |
250 KB |

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