I narrowly missed the deadline in my state to install these prior to Rule 21 / UL1741-SA being adopted. Otherwise I would be using them myself. These are nice units. But the units are brand new, unused. Includes DC disconnect switch. Features AFCI (arc fault circuit interrupter). Is not California Rule 21 / UL1741_SA certified. (Required in some states, not in others). These are transformer type inverters so they have substantial weight. The color of the inverter is white normal for U. Units not red as shown on the box. The item “SMA Sunny Boy 4000w Grid-tie Inverter SB4000US-12 + AFCI warranty&DC Disconect” is in sale since Thursday, October 11, 2018. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “tpcboxes” and is located in Northampton, Massachusetts. This item can be shipped to United States.

• Model: SB4000US-12 AFCI
• Country/Region of Manufacture: Germany
• MPN: SB4000US-12
• Brand: SMA
• Type: Grid Tie Inverter

California customers: this unit is not Rule 21 compliant and does not include a rapid disconnect device, making it unfit for new installations that need to get inspected. They are fine for replacements and upgrades that do not require a permit or PTO. Brand new old stock 4KW solar gridtie inverter WITH ARC PROTECTION SOMETHING THE REGULAR 4000US SERIES DO NOT HAVE!! The -12 model was replaced by a newer version (the -22 and now the -40) and that is why we can sell these at a deep discount. The item “SMA Sunny Boy 4000w Grid-tie Inverter SB4000US-12 + AFCI warranty&DC Disconect” is in sale since Sunday, September 23, 2018. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “solar_equipment_traders” and is located in Agoura Hills, California. This item can be shipped to United States.

• Model: SB4000US-12 AFCI
• Country/Region of Manufacture: Germany
• MPN: SB4000US-12
• Brand: SMA

California customers: this unit is not Rule 21 compliant and does not include a rapid disconnect device, making it unfit for new installations that need to get inspected. They are fine for replacements and upgrades that do not require a permit or PTO. Brand new old stock 4KW solar gridtie inverter WITH ARC PROTECTION SOMETHING THE REGULAR 4000US SERIES DO NOT HAVE!! The -12 model was replaced by a newer version (the -22 and now the -40) and that is why we can sell these at a deep discount. The item “SMA Sunny Boy 4000w Grid-tie Inverter SB4000US-12 + AFCI warranty&DC Disconect” is in sale since Friday, June 15, 2018. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “solar_equipment_traders” and is located in Agoura Hills, California. This item can be shipped to United States.

• Brand: SMA
• Model: SB4000US-12 AFCI
• MPN: SB4000US-12
• Country/Region of Manufacture: Germany

California customers: this unit is not Rule 21 compliant and does not include a rapid disconnect device, making it unfit for new installations that need to get inspected. They are fine for replacements and upgrades that do not require a permit or PTO. Brand new old stock 4KW solar gridtie inverter WITH ARC PROTECTION SOMETHING THE REGULAR 4000US SERIES DO NOT HAVE!! The -12 model was replaced by a newer version (the -22 and now the -40) and that is why we can sell these at a deep discount. The item “SMA Sunny Boy 4000w Grid-tie Inverter SB4000US-12 + AFCI warranty&DC Disconect” is in sale since Wednesday, January 03, 2018. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “solar_equipment_traders” and is located in Agoura Hills, California. This item can be shipped to United States.

• Brand: SMA
• Model: SB4000US-12 AFCI
• MPN: SB4000US-12
• Country/Region of Manufacture: Germany

Brand new old stock 4KW solar gridtie inverter WITH ARC PROTECTION SOMETHING THE REGULAR 4000US SERIES DO NOT HAVE!! The -12 model was replaced by a newer version (the -22 and now the -40) and that is why we can sell these at a deep discount. The item “SMA Sunny Boy 4000w Grid-tie Inverter SB4000US-12 + AFCI warranty&DC Disconect” is in sale since Monday, July 31, 2017. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “solar_equipment_traders” and is located in Agoura Hills, California. This item can be shipped to United States.

• Brand: SMA
• Model: SB4000US-12 AFCI
• MPN: SB4000US-12
• Country/Region of Manufacture: Germany

Brand new old stock 4KW solar gridtie inverter WITH ARC PROTECTION SOMETHING THE REGULAR 4000US SERIES DO NOT HAVE!! The -12 model was replaced by a newer version (the -22 and now the -40) and that is why we can sell these at a deep discount. The item “SMA Sunny Boy 4000w Grid-tie Inverter SB4000US-12 + AFCI warranty&DC Disconect” is in sale since Tuesday, July 04, 2017. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “solar_equipment_traders” and is located in Agoura Hills, California. This item can be shipped to United States.

• Brand: SMA
• Model: SB4000US-12 AFCI
• MPN: SB4000US-12
• Country/Region of Manufacture: Germany

Brand new old stock 4KW solar gridtie inverter WITH ARC PROTECTION SOMETHING THE REGULAR 4000US SERIES DO NOT HAVE!! The -12 model was replaced by a newer version (the -22 and now the -40) and that is why we can sell these at a deep discount. The item “SMA Sunny Boy 4000w Grid-tie Inverter SB4000US-12 + AFCI warranty&DC Disconect” is in sale since Wednesday, May 31, 2017. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “solar_equipment_traders” and is located in Agoura Hills, California. This item can be shipped to United States, Canada.

• Brand: SMA
• Model: SB4000US-12 AFCI
• MPN: SB4000US-12
• Country/Region of Manufacture: Germany

Incoming search terms:

• Freeshipping New high efficiency waterproof 260w g

Brand new old stock 4KW solar gridtie inverter WITH ARC PROTECTION SOMETHING THE REGULAR 4000US SERIES DO NOT HAVE!! The -12 model was replaced by a newer version (the -22 and now the -40) and that is why we can sell these at a deep discount. The item “SMA Sunny Boy 4000w Grid-tie Inverter SB4000US-12 + AFCI warranty&DC Disconect” is in sale since Monday, May 01, 2017. This item is in the category “Home & Garden\Home Improvement\Electrical & Solar\Alternative & Solar Energy\Chargers & Inverters”. The seller is “solar_equipment_traders” and is located in Agoura Hills, California. This item can be shipped to United States, Canada, Australia, Japan, South Korea, Indonesia, Taiwan, South africa, Thailand, Hong Kong, Mexico, Singapore, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, China, Sweden, Belgium, France, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, New Zealand, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia.

• Brand: SMA
• Model: SB4000US-12 AFCI
• MPN: SB4000US-12
• Country/Region of Manufacture: Germany