SimpliPHI™ ESS 6 kW Inverter

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The advanced design of the SimpliPHI™️ ESS 6 kW Hybrid Inverter offers versatile applications that seamlessly integrate solar, generator and/or grid power in both AC and DC coupled configurations – on or off grid. This smart hybrid inverter with integrated MPPT is designed to pair with the SimpliPHI ESS 4.9 kWh battery, PHI 3.8, and AmpliPhi 3.8. The SimpliPHI 6 kW Hybrid Inverter is efficient and easy to use in homes and businesses, providing critical backup power, Time-of-Use savings, and peak demand shaving – reducing utility bills and creating peace of mind.

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Scalable for any application

Scalable up to 5 inverters for a total of 30 kW of power.

Seamless switchover time

Less than 8 milliseconds of seamless switchover time protects sensitive electronics and minimizes downtime.

Off-grid and grid-connected systems

Simple installation for both AC coupled retrofit and new DC coupled systems.

Simple digital interface

Easy programming and monitoring of primary system functions on the LCD inverter interface.

Versatile installation options

IP 65 rating supports all weather conditions for both indoor or outdoor installations. 

EnergyTrak™ enabled

Peace of mind that your system is working optimality with remote monitoring all from an app.

Warranty coverage

10-year limited warranty.1

1See operator’s manual or for complete warranty details.


SimpliPHI™ ESS 6kW Inverter
Model Designation PHI-HB-INV-6kW
Environmental Protection IP65
Protective Class I
Battery Input Data
Nominal Battery Voltage 48VDC
DC Voltage Range 40~62VDC
Maximum Charging Voltage 62VDC (Configurable)
Maximum Charging Current 100 A
Maximum Discharging Current 150 A
Charging Curve 3 Stages / Float
Charging Strategy for Li-Ion Battery Self-adaption to BMS
Number of DC Connections 1
PV String Input Data
Maximum DC Input Power 7,500 W
Nominal DC Voltage 360VDC
Maximum DC Input Voltage 600VDC
MPPT Range 120~550VDC
Start-up Voltage / Initial Feed In Voltage 125VDC / 160VDC
Maximum Input Current per MPPT 15 A
Maximum Isc PV 21 A
Maximum Inverter Back Feed Current to Array 0 A
Number of MPP Trackers 2 with 2 inputs each
AC Output Data (On-grid)
Nominal Apparent Power Output to Utility Grid 6,000 VA
Nominal Output Voltage 220VAC / 240VAC L1-L2, 110VAC / 120VAC L-N
Nominal Output Frequency 50 / 60 Hz
Output Frequency Range 47.5~51.5 Hz or 59.3~60.5 Hz
Output Voltage Range 105.5–132VAC per phase
Inrush Current/Duration 30 A per phase / 20 ms
O/P DC Component <100 mA
Output Power Factor >0.99 (Adjustable from 0.9 leading to 0.9 lagging)
Output THDi (@Nominal Output) <3%
Switch Over Time (Grid Down) <8 ms
AC Output Data (Back-up)
Maximum Output Apparent Power 6,000VA
Instantaneous Power (100ms) 12,000VA
Surge Power (5 sec) 9,000VA
Maximum Output Active Power 6,000 W
Nominal Output Voltage 220VAC / 240VAC L1-L2, 110VAC / 120VAC L-N
Nominal Output Frequency – Auto Sensing 50/60 (±0.1 Hz)
Output THDv (@Linear Load) <3%
Output THDv (@PF 0.8 Non-Linear Load) <5%
Parallel Function Yes
Parallel Units 5
Automated Generator Start Included
Maximum Solar to Utility Efficiency 96.50%
Maximum Battery to Load Efficiency 91.00%
Anti-Islanding Protection Integrated
PV String Input Reverse Polarity Protection Integrated
AFCI (Arc-Fault) Integrated
Ground Fault Monitoring Integrated
Insulation Resistor Detection Integrated
Residual Current Monitoring Unit Integrated
Output Over Current Protection Integrated – 90 A per phase
Output Short Protection Integrated
Rapid Shut Down Relay Integrated
General Data
Operating Temperature Range -13 – 140 °F (-25 – 60 °C)
Transformerless Yes
Consumption Modes UPS, Self-Consumption, TOU, Off- Grid Backup, Grid-Tied without Batteries
Relative Humidity 0~90%
Operating Altitude <13,123 ft (4,000 m)
Cooling External Force Convection
Noise <50 dB
Dimensions (W x H x D) 20.28 x 27.55 x 8.5 in (515 x 700 x 215.5 mm)
Noise <50 dB
Dimensions (W x H x D) 20.28 x 27.55 x 8.5 in (515 x 700 x 215.5 mm)
Communications Interface
User Interface LCD / Phone Application (iOS & Android)
Communication with BMS CANBUS
Communications Between Inverters CANBUS
Communication with Cloud – API with Grid Services via EnergyTrakTM Gateway
Communication Port RS-232
Intelligent Slot RS232 / USB, BMS, Wi-Fi
Certifications / Standards
Grid Regulation UL 1741SA-2020, UL 1741 SB-2020 (in process), IEEE1547.1-2020
Safety Regulation 6-1, 6-4 IEC / EN 62109-1&2
EMC EN 61000-6-2, EN 61000-6-3

Specifications are typical/nominal. Subject to change without notice.