Product Description
ESS1 & MASS Series Single-Phase Hybrid Inverters: Reliable Power Solutions for Residential & Small Commercial Energy Storage
In an era where households and small businesses increasingly seek to reduce grid reliance, lower energy costs, and ensure power resilience, the ESS1-4K1P-01-LV-FG, ESS1-6K1P-01-LV-FG, and MASS-10.2KW-48V hybrid inverters emerge as versatile, high-performance solutions. These single-phase devices seamlessly integrate photovoltaic (PV) energy harvesting, lithium battery storage, and grid connectivity, delivering a unified platform for energy management that balances efficiency, flexibility, and durability.
Core Performance & Technical Specifications
PV Input: Optimized Solar Harvesting
All models feature advanced MPPT (Maximum Power Point Tracking) technology to maximize solar energy capture, even under fluctuating light conditions. The ESS1-4K1P-01-LV-FG supports a maximum PV input power of 6kW, with a 30A input current and 60-420V MPPT voltage range, while the ESS1-6K1P-01-LV-FG scales to 9kW PV input, 40A current, and the same voltage range. Both use 4 MPPT trackers with 2 strings per tracker, ensuring efficient energy capture even with partial shading. The MASS-10.2KW-48V offers a 10.8kW PV input, 44.37A current, and 90-300V MPPT range, with 2 trackers optimized for high-current PV modules.
Product Parameters
Parameter |
ESS1-4K1P-01-LV-FG |
ESS1-6K1P-01-LV-FG |
MASS-10.2KW-48V |
PV |
|
|
|
Max PV Input Power |
6kW |
9kW |
10.8kW |
Rated Input Voltage |
500V |
500V |
500V |
Max Input Voltage |
350V |
350V |
90V |
Startup Voltage |
60V |
60V |
90V |
MPPT Voltage Range |
60-420V |
60-420V |
90-300V |
Max Input Current |
30A |
40A |
44.37A |
Max Short-Circuit Current |
40A |
40A |
45A |
MPPT Trackers/Max String per Tracker |
April 2nd |
April 2nd |
2 |
Battery Input/Output |
|
|
|
Battery Voltage Range |
40-60V |
40-60V |
48 |
Max Charge/Discharge Current |
80A/80A |
100A/100A |
160 |
Max Charge/Discharge Power |
4kW/4kW |
6kW/6kW |
10.2kW/10.2kW |
Battery Communication |
RS485/CAN |
RS485/CAN |
Supported |
Inverter Output |
|
|
|
Rated Output Power |
4kW |
6kW |
10KW |
Max Output Power |
4.2kW |
6.2kW |
10.2KW |
Max Apparent Output Power |
4.2kVA |
6.2kVA |
10kVA |
Rated Output Current |
18.2A |
27.3A |
47 |
Max Output Current |
19.1A |
28A |
47 |
UPS Switching Time |
<10ms |
<10ms |
20ms |
Output Voltage/Frequency |
L/N/PE 220V/230V 50Hz/60Hz |
L/N/PE 220V/230V 50Hz/60Hz |
220V/50Hz |
Output Power Factor |
0.8 leading ~ 0.8 lagging |
0.8 leading ~ 0.8 lagging |
/ |
Total Current Harmonic Distortion |
<2% |
<2% |
/ |
Grid Connection |
|
|
|
Max Input Power |
7kW |
10kW |
12KW |
Max Input Current |
40A |
50A |
47A |
Input Voltage Range |
176-253V |
176-253V |
170-270V |
EPS Port |
|
|
|
Max Output Power (Hybrid) |
7kW |
10kW |
10.2KW |
Max Output Power (Hybrid) |
4.2kW |
6.2kW |
10.2KW |
Max Output Current (Hybrid) |
40A |
50A |
47A |
Max Output Current (Grid) |
19.1A |
28A |
47A |
Multi-Function Port |
|
|
|
Working Mode |
Second Load/Generator |
Second Load/Generator |
3 Working Modes |
Max Input/Output Power |
8kW |
8kW |
10.2kW/10.2kW |
Max Input/Output Current |
/ |
/ |
47A |
Rated Voltage/Frequency |
L/N/PE 220V/230V 50Hz/60Hz |
L/N/PE 220V/230V 50Hz/60Hz |
220V/50Hz |
System Parameters |
|
|
|
Max Efficiency |
97.50% |
97.50% |
99% |
Protection Grade |
IP20 |
IP20 |
IP21 |
Operating Temperature |
-25 ~ 60℃ |
-25 ~ 60℃ |
0-60℃ |
Cooling Method |
0-95% (Non-condensing) |
0-95% (Non-condensing) |
60% |
Humidity |
Air Cooling |
Air Cooling |
Air Cooling |
Dimensions (W×H×D, mm) |
358*442*161mm |
358*442*161mm |
530*420*160mm |
Weight |
9kg |
9kg |
15kg |
Auxiliary Functions |
|
|
|
Anti-Islanding Protection |
Equipped |
Equipped |
/ |
Arc Fault Protection |
Equipped |
Equipped |
/ |
Anti-Reverse Connection |
CT/METER |
CT/METER |
/ |
Max Parallel Quantity |
8 |
8 |
/ |
Battery Integration: Flexible Energy Storage
The inverters are designed for low-voltage lithium battery systems, with the ESS1 series supporting 40-60V batteries and 80A/100A charge/discharge currents (4kW/6kW power), and the MASS model compatible with 48V batteries and 160A current (10.2kW charge/discharge power). Battery communication via RS485/CAN ensures real-time monitoring of state of charge (SoC) and health, extending battery lifespan by preventing overcharging/discharging. This makes the series ideal for time-of-use energy arbitrage, storing excess PV energy for peak-demand periods, and providing backup power during grid outages.
Inverter Output: Grid-Tied & Off-Grid Flexibility
A key strength is the dual-mode AC output, which ensures uninterrupted power for critical loads. The ESS1 series delivers 4kW/6kW rated output (4.2kW/6.2kW maximum), with <10ms UPS switching time—fast enough to prevent disruption to sensitive electronics like computers and medical devices. The MASS-10.2KW-48V provides 10kW rated output (10.2kW maximum) with 20ms switching, suitable for larger residential loads. All models support 220V/230V 50Hz/60Hz single-phase power, with a power factor of 0.8 leading to 0.8 lagging and total harmonic distortion (THD) <2%, ensuring clean, grid-compliant power delivery.
Grid & EPS Integration: Enhanced Resilience
The grid input supports 176-253V (ESS1) or 170-270V (MASS) voltage ranges, allowing the inverters to draw grid power for battery charging during off-peak hours or feed excess PV energy back to the grid. The EPS (Emergency Power Supply) port provides backup power for critical loads, with the ESS1 series offering 7kW/10kW maximum output and the MASS model delivering 10.2kW. The multi-function port adds versatility: the ESS1 series supports a second load or generator input, while the MASS model features 3 operating modes (solar priority, battery priority, grid priority) to adapt to user preferences.
Key Features & Competitive Advantages
Safety & Durability
All models include comprehensive safety protections, such as anti-islanding, arc fault detection, and reverse polarity protection, complying with global standards like IEC and UL. The ESS1 series has an IP20 rating for indoor installation, while the MASS-10.2KW-48V offers IP21 protection for semi-outdoor use. Operating temperatures range from -25°C to 60°C (ESS1) or 0°C to 60°C (MASS), with air cooling ensuring reliable performance in harsh conditions.
Scalability & InstallationThe ESS1 series supports up to 8 units in parallel, enabling system expansion from 4kW to 48kW for larger commercial applications. The compact design (358×442×161mm for ESS1, 530×420×160mm for MASS) and lightweight construction (9kg/15kg) simplify wall mounting and installation, even in space-constrained environments.
Intelligent Monitoring & Control
Built-in RS485/CAN communication allows integration with energy management systems (EMS), enabling remote monitoring of PV generation, battery status, and load consumption. Users can adjust operating modes, set charging schedules, and receive alerts for maintenance, maximizing system uptime and efficiency.
Application Scenarios
Residential Energy Independence: Reduce electricity bills by self-consuming PV energy, store excess power for night use, and ensure backup power during outages.
Small Commercial Use: Power shops, offices, and cafes with clean solar energy, lower peak-demand charges, and maintain operations during grid failures.
Remote Off-Grid Systems: Provide reliable power for rural homes, cabins, and telecom towers, combining solar, battery, and generator inputs for 24/7 resilience.
Time-of-Use Arbitrage: Charge batteries with low-cost grid power at night and discharge during high-cost peak hours, maximizing savings.
