Best for
Couldn't load pickup availability
Off-Grid Solar Inverter · 12,000W · 48V
A 12,000W all-in-one off-grid inverter/charger with 120/240V split-phase output, dual 22A MPPTs for 13.2kW of solar, built-in PV rapid shutdown and circuit breakers, and parallel expansion to 72kW.
The Sungold Power FR12K-B packs a 12kW pure sine wave inverter, two MPPT solar charge controllers and a 200A battery charger into a single wall-mounted enclosure. It delivers 120V single-phase or 120/240V split-phase power, so it can run a whole home or small business - well pumps, air conditioners, ranges and 240V appliances included - with 24,000W of surge for motor starts.
Two MPPT inputs accept 6,600W each (13,200W total) with a 500Vdc open-circuit limit and a wide 125-425Vdc operating range. A built-in PV rapid shutdown (RSD) initiator and input/output circuit breakers are integrated, which simplifies installation and helps meet NEC 2017/2020 requirements without extra hardware.
The independent generator port can be reconfigured as a second, smart-load output, letting you shed non-critical circuits automatically when the battery is low. Four output-priority modes, two charging modes and time-of-use scheduling are set from the LCD or the Wi-Fi app, and up to six units can be paralleled for 72kW.
Browse all Sungold Power products, Sungold solar kits, inverters and batteries.
Pure sine wave output at 120/240V with 6HP motor-start capability and a 10ms transfer time between sources.
Two 22A trackers handle 6,600W each, with 99.9% MPPT tracking efficiency and a 500Vdc maximum input.
Integrated PV rapid shutdown initiator plus AC and DC circuit breakers provide multi-layer protection and reduce external components.
Use the generator port as a generator input or as a second output that automatically manages non-essential loads.
Parallel up to six FR12K-B units in single-phase, split-phase or three-phase configurations as your loads grow.
Real-time status on the local display and remote monitoring through the SunGoldPower app; RS485/CAN/USB and dry-contact ports included.
No. It is an off-grid inverter/charger: it uses grid or generator power as an input to charge batteries and pass through loads, but it does not export solar to the grid. For grid export, see the SGS-12K18MAX hybrid inverter.
Up to 13,200W (6,600W per MPPT), with a 500Vdc maximum open-circuit voltage and a 125-425Vdc MPPT window.
48V lithium batteries with CAN/RS485 communication such as the SunGoldPower CoreX 5 Pro, CoreX 5 Elite and PowerMax 314 Outdoor, or lead-acid banks (40-60Vdc).
Yes - the FR12K-B carries a 2-year manufacturer warranty, and Eco Solar Kits provides US-based support before and after the sale.
FR12K-B 12kW All-in-One Off-Grid Inverter
| Inverter Output | |
| Rated output power | 12,000W |
| Peak power | 24,000W |
| Output voltage | 120/240Vac single-phase / split-phase |
| Load motor capacity | 6HP |
| Frequency | 50/60Hz |
| Output waveform | Pure sine wave |
| Switching time | 10ms (typical) |
| Parallel units | Up to 6 (72kW) |
| Battery | |
| Battery type | Lithium-ion / lead-acid / user-defined |
| Rated battery voltage | 48Vdc |
| Voltage range | 40-60Vdc |
| Max PV charging current | 200A |
| Max grid/generator charging current | 120A |
| Max hybrid charging current | 200A |
| PV Input | |
| MPPT trackers | 2 |
| Max PV input power | 6,600W + 6,600W (13,200W) |
| Max input current | 22A / 22A |
| Max open-circuit voltage | 500Vdc |
| MPPT operating range | 125-425Vdc |
| MPPT tracking efficiency | 99.9% |
| Battery-to-AC efficiency | 92% |
| Grid / Generator Input | |
| Input voltage range | 90-140Vac |
| Input frequency | 50/60Hz |
| Bypass overload current | 63A |
| General | |
| Dimensions | 28.48 x 17.64 x 5.91 in (723 x 448 x 150 mm) |
| Weight | 61.73 lb (28 kg) |
| Protection | IP20, indoor use |
| Ambient temperature | 14-131°F (derated above 113°F) |
| Noise | <60dB |
| Cooling | Intelligent fan |
| Communication | RS485 / CAN / USB / dry contact; Wi-Fi / GPRS optional |
| Safety | IEC62109-1, IEC62109-2, UL1741 |
| EMC | EN61000-6-1, EN61000-6-3, FCC 15 Class B |
| Warranty | 2 years |
Free shipping on all orders within the mainland US (Hawaii, Alaska and overseas territories excluded - a freight forwarder is required). Orders ship directly from our brand partners' warehouses across the U.S. Order confirmation is emailed immediately; if an item is unexpectedly backordered we notify you before your card is charged. In-stock items are processed within 1-4 business days (cut-off 4:00 PM EST), transit is 3-6 business days, and tracking is emailed within 24 hours of shipment. Typical delivery is 4-10 business days from purchase. Minimum order value is $69.
You have 30 days from the delivery date to initiate a return (35 days for orders placed Nov 25-30 and Dec 25-31). Items must be unused, in original packaging with tags attached, and returns require prior authorization from our team.
To start a return: +1 (307) 317-7213, hello@ecosolarkits.com, or live chat. Read the full return and refund policy
