SMA Smartformer for Sunny Island Inverters


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Product information

The SMA Smartformer makes it easy to configure slip-phase off-grid systems up to 7000 Watts. It is compatible with SMA Sunny Island inverters SI 4548-US and SI 6048-US. The Smartfromer also functions as an AC distributor and 120/240 Volt autotransformer. 

Using a Sunny Boy inverter and a Sunny Island, the Smartformer can step-down or step-up to become a 120V or 240V power source with minimal efficiency loss.

The pre-wired bypass function will bridge the PV systems to perform maintenance. The smart former also includes overload protection and load shedding contractor to prevent battery over discharge.

Some of the Smartformer features include, pre-wired AC distribution board, bypass switch for direct grid operation and miniature circuit-breaker for PV and load. The Smartformer is UL listed and comes standard with a 5-Year warranty.

SMA America started in Germany in 1981 and is a pioneer in photovoltaics power conversion. Today they are the number one inverter manufacturer worldwide with presence in 15 different countries, including the United States and Canada. In 2011 they opened the solar academy in California to help installers understand SMA’s technology and bring that knowledge to the home of thousands of homeowners in the US.

SMA staples include the Sunny Island inverters for off-grid and remote applications and the Sunny Boy inverters for residential and small commercial applications. In recent years they added the Tripower line of commercial inverters ranging from 12kW to 30kW per unit. Some of their inverters are assembled in Colorado and qualify for the ARRA Recovery Act. All their units are UL listed and comply with the most recent requirements in the National Electric Code (NEC).

SMA America has raised the bar in the solar industry for over 30 years and they continue to do so. They cover a wide range of applications and system sizes. The new inverter models with grid-tie applications come with multiple MPPT channels that will provide increased flexibility for your design and the length of you PV strings. This is a required feature when working with challenging roofs such as odd shapes or significant shading.

Additionally, SMA provides their Sunny Portal free of charge to SMA users. It is one of the most advanced energy communication platforms; all SMA inverters can transfer production data to the Sunny Portal. The portal is accessible to system owners via the Internet, where they can view and monitor their system’s performance in great detail.

Download datasheet

SMA Smartformer

Specs for SMA Smartformer SI-TD-BOX-10 for Sunny Island Inverters

Download datasheet
List of Pre Wired Systems

Note: Price includes shipping within continental US.

Part NumberNominal VoltageNominal Output PowerCharge ControllerInverter / ChargerCategoryPrice
MNXWP5548-UPS48 V5500 WNoneXW5548UPS$5,044.23
MNXWP6848-UPS48 V6800 WNoneXW6848UPS$5,756.40
MNSW2524-UPS24 V2500 WNoneSW2524UPS$3,029.49
MNSW4024-UPS24 V4000 WNoneSW4024UPS$3,179.30
MNSW4048-UPS48 V4000 WNoneSW4048UPS$3,329.86
MNXWPAC554848 V5500 WNoneXW5548AC Coupled$5,317.29
MNXWPAC5548-CL15048 V5500 WClassic 150XW5548AC Coupled$6,084.81
MNXWPAC5548-CL20048 V5500 WClassic 200XW5548AC Coupled$6,099.57
MNXWPAC5548-CL25048 V5500 WClassic 250XW5548AC Coupled$6,247.17
MNXWPAC5548-RSS48 V5500 WNoneXW5548AC Coupled$5,516.55
MNXWPAC684848 V6800 WNoneXW6848AC Coupled$5,870.79
MNXWPAC6848-CL15048 V6800 WClassic 150XW6848AC Coupled$6,594.03
MNXWPAC6848-CL20048 V6800 WClassic 200XW6848AC Coupled$6,608.79
MNXWPAC6848-CL25048 V6800 WClassic 250XW6848AC Coupled$6,756.39
MNXWPAC6848-RSS48 V6800 WNoneXW6848AC Coupled$6,070.05
MNXWPAC5548D48 V11000 WNoneXW5548AC Coupled$10,169.64
MNXWPAC5548D-CL15048 V11000 WClassic 150XW5548AC Coupled$10,937.16
MNXWPAC5548D-CL20048 V11000 WClassic 200XW5548AC Coupled$10,951.92
MNXWPAC5548D-CL25048 V11000 WClassic 250XW5548AC Coupled$11,099.52
MNXWPAC5548D-2CL15048 V11000 WClassic 150 (x2)XW5548AC Coupled$11,660.40
MNXWPAC5548D-2CL20048 V11000 WClassic 200 (x2)XW5548AC Coupled$11,689.92
MNXWPAC5548D-2CL25048 V11000 WClassic 250 (x2)XW5548AC Coupled$11,985.12
MNXWPAC5548D-RSS48 V11000 WNoneXW5548AC Coupled$10,501.74
MNXWPAC6848D48 V13600 WNoneXW6848AC Coupled$11,272.95
MNXWPAC6848D-CL15048 V13600 WClassic 150XW6848AC Coupled$12,040.47
MNXWPAC6848D-CL20048 V13600 WClassic 200XW6848AC Coupled$12,055.23
MNXWPAC6848D-CL25048 V13600 WClassic 250XW6848AC Coupled$12,202.83
MNXWPAC6848D-2CL15048 V13600 WClassic 150 (x2)XW6848AC Coupled$12,763.71
MNXWPAC6848D-2CL20048 V13600 WClassic 200 (x2)XW6848AC Coupled$12,793.23
MNXWPAC6848D-2CL25048 V13600 WClassic 250 (x2)XW6848AC Coupled$13,088.43
MNXWPAC6848D-RSS48 V13600 WNoneXW6848AC Coupled$11,605.05
MNXWP5548-CL15048 V5500 WClassic 150XW5548Grid-Tie with Battery Backup / Off Grid$6,058.98
MNXWP5548-CL20048 V5500 WClassic 200XW5548Grid-Tie with Battery Backup / Off Grid$6,073.74
MNXWP5548-CL25048 V5500 WClassic 250XW5548Grid-Tie with Battery Backup / Off Grid$6,221.34
MNXWP5548-2CL15048 V5500 WClassic 150 (x2)XW5548Grid-Tie with Battery Backup / Off Grid$6,870.78
MNXWP5548-2CL20048 V5500 WClassic 200 (x2)XW5548Grid-Tie with Battery Backup / Off Grid$6,900.30
MNXWP5548-2CL25048 V5500 WClassic 250 (x2)XW5548Grid-Tie with Battery Backup / Off Grid$7,195.50
MNXWP5548-CL150-RSS48 V5500 WClassic 150XW5548Grid-Tie with Battery Backup / Off Grid$6,258.24
MNXWP6848-CL15048 V6800 WClassic 150XW6848Grid-Tie with Battery Backup / Off Grid$6,612.48
MNXWP6848-CL20048 V6800 WClassic 200XW6848Grid-Tie with Battery Backup / Off Grid$6,627.24
MNXWP6848-CL25048 V6800 WClassic 250XW6848Grid-Tie with Battery Backup / Off Grid$6,774.84
MNXWP6848-2CL15048 V6800 WClassic 150 (x2)XW6848Grid-Tie with Battery Backup / Off Grid$7,424.28
MNXWP6848-2CL20048 V6800 WClassic 200 (x2)XW6848Grid-Tie with Battery Backup / Off Grid$7,453.80
MNXWP6848-2CL25048 V6800 WClassic 250 (x2)XW6848Grid-Tie with Battery Backup / Off Grid$7,749.00
MNXWP6848-CL150-RSS48 V6800 WClassic 150XW6848Grid-Tie with Battery Backup / Off Grid$6,811.74
MNXWP5548D-CL15048 V11000 WClassic 150XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$10,911.33
MNXWP5548D-CL20048 V11000 WClassic 200XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$10,926.09
MNXWP5548D-CL25048 V11000 WClassic 250XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$11,073.69
MNXWP5548D-2CL15048 V11000 WClassic 150 (x2)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$11,723.13
MNXWP5548D-2CL20048 V11000 WClassic 200 (x2)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$11,752.65
MNXWP5548D-2CL25048 V11000 WClassic 250 (x2)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$12,047.85
MNXWP5548D-3CL15048 V11000 WClassic 150 (x3)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$12,534.93
MNXWP5548D-3CL20048 V11000 WClassic 200 (x3)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$12,579.21
MNXWP5548D-3CL25048 V11000 WClassic 250 (x3)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$13,022.01
MNXWP5548D-4CL15048 V11000 WClassic 150 (x4)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$13,346.73
MNXWP5548D-4CL20048 V11000 WClassic 200 (x4)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$13,405.77
MNXWP5548D-4CL25048 V11000 WClassic 250 (x4)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$13,996.17
MNXWP5548D-2CL150-RSS48 V11000 WClassic 150 (x2)XW5548 (x2)Grid-Tie with Battery Backup / Off Grid$12,121.65
MNXWP6848D-CL15048 V13600 WClassic 150XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$12,014.64
MNXWP6848D-CL20048 V13600 WClassic 200XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$12,029.40
MNXWP6848D-CL25048 V13600 WClassic 250XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$12,177.00
MNXWP6848D-2CL15048 V13600 WClassic 150 (x2)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$12,826.44
MNXWP6848D-2CL20048 V13600 WClassic 200 (x2)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$12,855.96
MNXWP6848D-2CL25048 V13600 WClassic 250 (x2)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$13,151.16
MNXWP6848D-3CL15048 V13600 WClassic 150 (x3)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$13,638.24
MNXWP6848D-3CL20048 V13600 WClassic 200 (x3)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$13,682.52
MNXWP6848D-3CL25048 V13600 WClassic 250 (x3)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$14,125.32
MNXWP6848D-4CL15048 V13600 WClassic 150 (x4)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$14,450.04
MNXWP6848D-4CL20048 V13600 WClassic 200 (x4)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$14,509.08
MNXWP6848D-4CL25048 V13600 WClassic 250 (x4)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$15,099.48
MNXWP6848D-2CL150-RSS48 V13600 WClassic 150 (x2)XW6848 (x2)Grid-Tie with Battery Backup / Off Grid$13,224.96
MNSW2524-KID-B24 V2500 WKID-BSW2524Off Grid$3,291.48
MNSW2524-KID-B-RSS24 V2500 WKID-BSW2524Off Grid$3,490.74
MNSW4024-KID-B24 V4000 WKID-BSW4024Off Grid$3,442.77
MNSW4024-KID-B-RSS24 V4000 WKID-BSW4048Off Grid$3,642.03
MNSW4048-KID-B48 V4000 WKID-BSW4048Off Grid$3,594.06
MNSW4048-KID-B-RSS48 V4000 WKID-BSW4048Off Grid$3,793.32
MNSW2524-CL15024 V2500 WClassic 150SW2524Off Grid$3,848.67
MNSW2524-CL20024 V2500 WClassic 200SW2524Off Grid$3,863.43
MNSW2524-CL25024 V2500 WClassic 250SW2524Off Grid$4,011.03
MNSW2524-CL150-RSS24 V2500 WClassic 150SW2524Off Grid$4,047.93
MNSW4024-CL15024 V4000 WClassic 150SW4024Off Grid$3,999.96
MNSW4024-CL20024 V4000 WClassic 200SW4024Off Grid$4,014.72
MNSW4024-CL25024 V4000 WClassic 250SW4024Off Grid$4,162.32
MNSW4024-CL150-RSS24 V4000 WClassic 150SW4024Off Grid$4,191.84
MNSW4048-CL15048 V4000 WClassic 150SW4048Off Grid$4,147.56
MNSW4048-CL20048 V4000 WClassic 200SW4048Off Grid$4,162.32
MNSW4048-CL25048 V4000 WClassic 250SW4048Off Grid$4,309.92
MNSW4048-CL150-RSS48 V4000 WClassic 150SW4048Off Grid$4,354.20

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