10000W 48V Solar Charger Inverter SPH5048

48V Inverters — 10KW Solar Charger Authentic Split Phase, SPH5048 (2 Units Parallel)

The SPH5048 is a 5,000W pure sine wave solar charger inverter operating on a 48V battery architecture — two units connected in parallel deliver 10,000W of combined split-phase output at 120/240VAC. As a purpose-built 48V inverter for off-grid applications, it integrates a solar MPPT charger, AC charger, and pure sine wave inverter into a single unit, with UL1741 certification confirming compliance with North American grid-interactive inverter safety standards. The 500VDC maximum PV open-circuit voltage and 120–450VDC MPPT operating range accommodate all common residential solar panel string configurations. inverters for sale

Table of Contents

1. Product Specifications
2. 48V Architecture and Parallel Operation
3. MPPT Solar Charging
4. AC Charging and Bypass
5. Pure Sine Wave Output
6. Protection Systems
7. Frequently Asked Questions

Product Specifications

48V Architecture and Parallel Operation

The 48V system architecture of the SPH5048 is the established standard for residential and small commercial off-grid inverters in the 5kW–10kW class. At 48V nominal, the system operates at lower current than equivalent 12V or 24V alternatives — reducing cable sizing requirements, minimising resistive losses across the battery-to-inverter connection, and improving overall round-trip efficiency under continuous heavy load.

Two SPH5048 units connected in parallel deliver 10,000W of combined output in split-phase 120/240VAC configuration. The 48V inverters parallel architecture distributes load evenly across both units — each contributing its 5,000W rated output to the shared bus — with automatic load sharing adjustment as demand fluctuates. Up to six units can be paralleled for a maximum combined output of 30,000W in single-phase, split-phase, or three-phase arrangements.

MPPT Solar Charging

The integrated MPPT solar charger accepts PV input up to 500VDC open-circuit voltage with an operating range of 120–450VDC, covering the string voltage range of all standard residential panel configurations from 370W to 550W monocrystalline panels. PV charging current is adjustable from 0–100A, allowing the system to be configured for the specific battery chemistry and capacity of the connected bank.

The solar and power inverter charging architecture prioritises solar input over AC charging — drawing from the PV array first, supplementing with AC charging only when solar generation is insufficient to meet load and charging demand simultaneously. This priority sequencing maximises the use of available solar energy and minimises grid or generator fuel consumption in hybrid installations offgrid inverter.

AC Charging and Bypass

The AC charger accepts 90–140VAC input with auto-sensing frequency detection for 50Hz and 60Hz grid standards. Charging current is adjustable from 0–40A to match the connected generator’s output capacity and avoid overloading smaller portable generators. The 63A bypass breaker handles continuous grid passthrough current for high-draw loads during periods of grid availability without routing power through the inverter conversion stage — improving efficiency for large continuous loads.

The grid on inverter bypass mode activates automatically when grid power is present and load demand exceeds inverter output capacity, or when configured to prefer grid power during specified time periods through time-slot programming.

Pure Sine Wave Output

The SPH5048 produces pure sine wave output at 120VAC with settable voltage options of 100V, 105V, or 110V — accommodating regional voltage standard variations across North America and international markets where 110VAC nominal is used. Pure sine wave output quality is compatible with all load categories: inductive motors, switching power supplies, variable speed drives, medical equipment, and sensitive audio or measurement instrumentation.

Browse our full 48V Inverters, Solar Charger Inverters, and Off-Grid Solar Products collections for additional specifications.

Frequently Asked Questions

Q: What does “2 units parallel” mean for the SPH5048 listing? This listing describes a two-unit parallel configuration, where two SPH5048 units each rated at 5,000W are connected together to deliver 10,000W of combined output. Each unit operates independently but shares the load bus, with up to six units supportable for a maximum of 30,000W combined output.

Q: What battery voltage does the SPH5048 require? The SPH5048 is rated for 48V nominal battery input, with a minimum start voltage of 44V and an operating range of 40.0–60.0VDC. Both lead-acid and lithium battery chemistries are supported, with adjustable charging current and voltage parameters.

Q: What is the maximum PV input voltage? Maximum PV open-circuit voltage is 500VDC. The MPPT operating range is 120–450VDC. These parameters accommodate most standard residential string configurations without requiring additional DC voltage limiting hardware.

Q: Is this inverter UL1741 certified? Yes. The SPH5048 carries UL1741 certification, confirming compliance with the North American safety standard for inverters, converters, controllers, and interconnection system equipment for use with distributed energy resources.

Q: What overload protection does the system apply? Loads between 102% and 110% above rated output trigger an error and shut down after five minutes. Loads between 110% and 125% shut down after 10 seconds. Loads above 125% shut down after five seconds. The overcharge protection alarm activates and shuts down charging after one minute if battery voltage exceeds the maximum charge threshold.