SMA Mono 2.5 kW Grid Inverter – SB2.5-1VL-40
The SMA SB2.5-1VL-40 (Sunny Boy 2.5) grid-connected inverter is designed for small single-phase residential photovoltaic installations, to efficiently convert solar energy and improve production in partial shade thanks to OptiTrac functions.
- Technical specifications: power 2.5 kVA (2500 W), 1 MPPT, max. input voltage 600 V, MPPT range 260–500 V, max. efficiency 97.2% (European efficiency 96.7%), convection cooling, IP65 protection rating.
- Compatibility: single-phase 220/230/240 VAC grid (range 180–280 V), SUNCLIX DC connection, online monitoring via Sunny Portal, installation video available on the page.
- Benefits: Optimises production on small roofs, even in shaded conditions, and remains easy to install and scalable thanks to online monitoring.
SMA Sunny Boy 2.5: The compact, high-performance solar inverter for everyone

Description
The new Sunny Boy 1.5 and 2.5 inverters are the ideal solution for small photovoltaic systems.
Easy to install, the inverter is compatible with a wide range of photovoltaic panels thanks to its extended voltage range (80 - 600V), making it highly flexible while offering excellent efficiency.
Its small dimensions make it particularly lightweight. It can be easily integrated indoors or outdoors.
Its robust, lightweight casing makes it easy to install both indoors and outdoors, making it ideal for small photovoltaic systems.

Features
- Up to 97.2% efficiency
- Transformerless
- Maintenance-free thanks to convection cooling
- SUNCLIX DC connection system
- Easy to install
- Wide input voltage range
Efficiency curve

Optitrac technology
OptiTrac Global Peak is an additional function of the proven "OptiTrac" MPP tracker and is activated on this inverter.
It is used for partially shaded photovoltaic systems. Even in this configuration, this special operating mode guarantees continuous operation of the panels at the maximum power point, without any noticeable influence on yield (losses < 0.2%). In other words: even in the event of shading, the panels operate correctly.
Installation and commissioning
Technical specifications
| Technical data | Sunny Boy 1.5 | Sunny Boy 2.0 | Sunny Boy 2.5 |
| DC input |
| Max. power of photovoltaic generator | 3000Wp | 4000Wp | 5000Wp |
| Max. input voltage | 600V | ||
| MPPT voltage range | 160Và500V | 210V à 500V | 260V à 500V |
| Assigned input voltage | 360V | ||
| Min. input voltage/start-up input |
| 50V/80V |
| Max. input current. | |||
| Per string | 10A | ||
| Max. short-circuit current. | |||
| Per string | 18A | ||
| Number of independent MPPT inputs/strings per MPPT input |
| AC output |
| Assigned power (For 230V, | |||
| 50Hz) | 1500W | 2000W | 2500W |
| AC apparent power max | 1500VA | 2000VA | 2500VA |
| AC nominal voltage | 220V/230V/240V | ||
| AC nominal voltage range | 180Và280V | ||
| AC mains frequency/range | 50Hz,60Hz/-5Hz to +5 Hz | ||
| Rated mains frequency/rated mains voltage | 50Hz/230V | ||
| Maximum output current |
| 11A |
| Power factor for rated power |
| Adjustable phase shift factor | ||
| ,8 inductive to 0.8 capacitive | ||
| Injection phases/connection phases |
| Max. | |||
| yield | |||
| European efficiency | 97.2%/96.1% | 97.2%/96.4% | 97.2%/96,7% |
| Protective devices | - | ||
| DC-side disconnection device | -/- | ||
| Ground fault monitoring / network monitoring | -/-/- | ||
| DC polarity reversal protection / AC short-circuit resistance | - | ||
| Fault current monitoring unit, |
| sensitive to all currents |
| Protection class (to IEC 62103)/overvoltage category (to IEC 60664-1) | Not required | ||
| General data |
| Dimensions | 460/357/122 mm (18,1/14.1/4.8 inches) | ||
| Weight | ||
| .2 kg (20.3 lbs) | ||
| Operating temperature range | ||
| to +60°C (-40°F to 140°C F) | ||
| Noise emissions, typical | <25db | ||
| Self-consumption (nui) | ||
| , | ||
| W | ||
| Topology | Transformerless | ||
| Cooling system | Convection | ||
| Protection class | IP65 | ||
| Climatic class |
| Maximum permissible relative humidity (non-condensing) | 100,00% | ||
| Equipment |
| DC | |||
| / AX connection | SUNCLIX / Connector | ||
| Warranty 5/10/15/20 years | -/○/ ○/ ○ | ||
| Certifications and approvals (others on request) | AS4777, C10/11, CE, CEI0-21, | ||
| DIN EN 62109-1/IEC 62109-1, DIN EN 62109-2/IEC 62109-2, EN50438, G83/2, IEC61727, IEC62116, NBR16149, |
|||
| , NRS097-2-1, VDE-AR-N4105, VDE 0126-1-1, VFR2014 | |||
| Type designation | SB1.5-1 VL -40 | .0-1 VL -40 | ,5-1 VL -40 |
Data sheet
- Inverter power in VA
- 2500 VA
- Max. solar input voltage
- 600 V
- Power
- 1500 VA to 2500 VA
- Phase
- Monophasé
- Number of MPPT
- 1 MPPT
- Video Youtube 1 - ID
- XrSVcrtJ2wA
- Video Youtube 2 - ID
- ENoNj8WqIIU
- Video Youtube 3 - ID
- zQH0cbvMwj8
Specific References
- UPC
- 712971132726
- EAN13
- 0712971132726
SMA Mono 2.5 kW Grid Inverter – SB2.5-1VL-40 — Inverters and converters
SMA Mono 2.5 kW Grid Inverter – SB2.5-1VL-40 by SMA is available in our Inverters and converters catalog. Technical specifications: inverter power in va: 2500 VA, max. solar input voltage: 600 V, power: 1500 VA to 2500 VA, phase: Monophasé, number of mppt: 1 MPPT, video youtube 1 - id: XrSVcrtJ2wA, video youtube 2 - id: ENoNj8WqIIU, video youtube 3 - id: zQH0cbvMwj8. Product weight: 9.2 kg. Reference: SB2.5-1VL-40.
