1STESS 5kW-11.4kW 48V Split Phase Hybrid Inverter
SE 5/6KHB-D2/UL | SE 7.6/10/11.4KHB-T2/UL
The 1STESS 48V Split Phase Hybrid Inverter series is designed for professional residential energy storage projects requiring flexible PV input, low-voltage battery integration, backup power and intelligent energy management.
Covering 5kW, 6kW, 7.6kW, 10kW and 11.4kW classes, the series provides a scalable 120/240V split phase hybrid inverter platform for solar distributors, importers, EPC contractors, system integrators and residential ESS installers.
With support for 48V low-voltage batteries, multiple MPPTs, high-current PV modules, AC coupling, generator integration and parallel operation, the platform helps professional buyers address more specialized residential solar storage and home backup applications.
Built for Split-Phase Residential Energy Storage
Residential energy storage projects increasingly require more than conventional PV conversion. A professional residential ESS inverter needs to coordinate solar generation, battery storage, grid power and backup loads while remaining flexible enough for different system architectures.
The 1STESS series supports 120V/240V split-phase output as well as 120V/208V 2/3-phase configurations, making it suitable for specialized residential energy storage and backup applications. It operates with a 48V nominal battery platform and supports a 40V-64V battery voltage range.
This makes the series a strong option for buyers searching for a: 48V split phase hybrid inverter, 120/240V hybrid inverter, residential ESS inverter or home backup inverter.
Flexible 48V Battery Platform
The inverter supports both lithium-ion and lead-acid batteries, giving system integrators more flexibility when matching different residential battery storage systems.
Selected models support battery charge and discharge current up to 210A, making the platform suitable for high-demand residential energy storage and backup applications.
For distributors and procurement teams, a common 48V platform can also simplify battery-inverter matching across multiple residential ESS projects.
Relevant search terms naturally covered by this section include 48V hybrid inverter, lithium battery inverter, low voltage hybrid inverter, LiFePO4 battery inverter and battery storage inverter.
High PV Compatibility with 2 or 3 MPPTs
Modern residential solar systems increasingly use higher-power PV modules and more complex rooftop orientations.
The 1STESS split phase hybrid inverter series supports a 70V-540V MPPT operating range, and selected T2 models integrate 3 MPPTs for multiple solar array orientations. The platform also supports PV input current up to 30A on applicable MPPT channels.
This helps EPC engineers configure PV arrays for different roof directions while improving compatibility with modern high-power solar modules.
Typical search terms include 3 MPPT hybrid inverter, MPPT solar inverter, high current PV inverter and residential solar inverter.
Home Backup Power and Fast Transfer
For homeowners and residential energy storage projects, backup performance is becoming an important purchasing consideration.
The inverter platform provides a typical transfer time of less than 10ms, supporting fast transition for residential backup applications.
Typical applications include home backup power, solar battery backup, residential energy storage, solar self-consumption and PV + battery + grid systems.
For professional buyers, this expands the product beyond conventional solar generation into the growing home energy storage system and backup power system categories.
Smart Load, Generator and AC Coupling
Different residential projects require different energy architectures.
The 1STESS hybrid inverter supports Smart Load, generator integration and AC coupling, enabling EPC companies to design solutions for new solar installations, battery backup systems and suitable solar retrofit projects.
This provides additional keyword coverage for: AC coupling inverter, generator compatible inverter, solar retrofit inverter, hybrid inverter with generator and smart load inverter.
More importantly, these functions give professional buyers a wider application range without requiring a completely different inverter platform.
Scalable with Up to 9 Inverters in Parallel
The series supports up to 9 units in parallel for on-grid and off-grid operation, helping system integrators scale installations according to project requirements.
For distributors, this creates a stronger product portfolio because one inverter family can support different system capacities.
For EPC contractors, parallel capability creates additional flexibility when system demand increases.
This section naturally covers parallel hybrid inverter, scalable residential ESS, on-grid off-grid hybrid inverter and solar energy storage system.
Intelligent Monitoring and Communication
The platform supports Wireless & APP + LED, optional LCD, CAN communication for BMS, RS485 for metering, CAN for parallel operation and optional Wi-Fi/LAN.
These communication options help installers and after-sales teams improve commissioning, battery integration, system monitoring and troubleshooting.
For professional buyers, this means better visibility throughout installation and operation.
Relevant search terms include CAN RS485 hybrid inverter, WiFi hybrid inverter, APP monitoring inverter and smart energy management system.
Safety and Compliance for Professional Projects
For importers and EPC contractors, compliance is often as important as inverter performance.
The UL-series catalogue lists UL 1741, CSA C22.2, UL 1699B, FCC Part 15 Class B, together with grid-related standards including UL 1741SA, UL 1741SB and IEEE 1547. The specification also lists NEMA 3R, Smart Cooling and a 5-year warranty with an optional 10-year term.
Integrated protection features also include built-in breaker architecture and AFCI 2.0 / rapid shutdown functionality.
For professional buyers, these specifications help address concerns around product qualification, project specification, installation safety and long-term reliability.
Designed for Importers, Distributors and EPC Contractors
The value of this product is not based on one specification alone.
For an importer, the combination of split-phase architecture, multiple power ratings and 48V battery compatibility can expand the available residential ESS portfolio.
For a distributor, one product family can cover multiple power levels, backup applications and battery-storage configurations.
For an EPC contractor or installer, multiple MPPTs, generator support, AC coupling and parallel operation provide additional project-design flexibility.
The result is a split phase hybrid inverter platform designed around real residential energy storage requirements rather than a single application scenario.
Blue-Ocean Opportunity: Beyond Conventional Hybrid Inverters
The market opportunity is not that split-phase hybrid inverters have no competition.
The opportunity comes from combining several specialized requirements in one platform:
120/240V split phase + 48V battery + multiple MPPTs + backup power + generator + AC coupling + parallel expansion + intelligent monitoring.
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