Off-grid inverters
Solis S6-EO1P off-grid inverter (4–5) kW · single-phase · 48 V
Solis S6-EO1P (4–5 kW) is a single-phase 48 V off-grid inverter from the S6 series for building reliable backup and stand-alone power systems. It features an MPPT tracker that supports high-power PV modules, works with LiFePO₄ and lead-acid batteries, provides instant switchover (UPS <10 ms) and supports parallel operation of up to 6 units.
Models
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Overview
The Solis S6-EO1P off-grid inverter (4–5 kW) is a dedicated solution for building reliable off-grid systems in locations with frequent, prolonged blackouts or no mains grid at all. Available in 4 kW and 5 kW ratings with a 48 V battery voltage, the series is designed to protect private houses, apartments, holiday homes, remote sites, cafés and small retail outlets.
Unlike the hybrid models, the Off-Grid series is built for maximum autonomy and rapid energy replenishment. The inverter supports a one-click fast-charging mode with a high charging current from the grid or a generator (up to 80–100 A), allowing the batteries to be topped up as quickly as possible during short windows of grid availability. The unit switches to backup power instantly, within 10 ms, keeping heating boilers, routers, PCs and refrigerators running without interruption.
Built for high inrush loads, the unit withstands 200% overload for 10 seconds. This means «heavy» appliances with submersible pumps, compressors or air conditioners start confidently without tripping the inverter's protection. The inverter has a Dual Backup Load output, allowing loads to be prioritised intelligently and non-essential appliances to be switched off automatically during deep battery discharge.
Solis S6-EO1P 48V offers absolute flexibility when building an off-grid power supply. It is compatible with the widest range of available 48 V batteries (LiFePO4 and lead-acid), with fast setup even for batteries without BMS communication. The unit integrates easily with petrol and diesel generators through auto-start and supports parallel connection of up to 6 units to increase site capacity or build three-phase networks.
Key specifications
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Power range (kW)
4–5
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Grid phases
Single-phase (220 V)
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Battery voltage
Low voltage — LV (48 V)
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Generator support
Yes
Key features
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Generator support as a supplementary power source during grid outages
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Easily expand system capacity through parallel connection and AC coupling
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200% overload for 10 seconds
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A wide choice of battery communication protocols, plus support for batteries without a communication link
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One-click fast-charging mode support
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Dual backup load support for intelligent load prioritisation
Technical specifications
Models
SKU: S6-EO1P4K-48-EU
General data
- Solar charger — max. usable PV module input power
- 5.5 kW
- Solar charger — max. usable PV module input power
- 6.5 kW
- Maximum input voltage
- 500 V
- Rated voltage
- 360 V
- Start-up voltage
- 90 V
- MPPT voltage range
- 90 - 430 V
- Max. input current
- 16 A / 16 A
- Max. short-circuit current
- 40 A
- Max. solar charging current
- 100 A
- Number of MPPTs / max. inputs per MPPT
- 1 / 2
- Dimensions (W × H × D)
- 340 × 495 × 170 mm
- Weight
- 14.1 kg
- Inverter topology
- High-frequency, non-isolated
- Relative humidity
- 5% - 95% (non-condensing)
- Ambient operating temperature range
- -10 ~ +60°C
- Storage temperature range
- -25 ~ +60°C
- Ingress protection (IP)
- IP21
- Noise level (typical)
- < 55 dB(A)
- Max. operating altitude
- 2000 m
- Parallel capability
- 6 units
- Safety standard
- IEC 62109, IEC 61000, 55011
Battery
- Battery type
- Lithium-ion / lead-acid
- Rated battery voltage
- 40 - 60 V
- Max. charge / discharge power
- 5 kW / 5 kW
- Maximum charge / discharge current
- 100 A
- Communication
- CAN
- Inverter output — rated output power
- 4 kVA / 4 kW
- Inverter output — rated output power
- 5 kVA / 5 kW
- Operating stage
- L/N/PE
- Rated grid voltage
- 230 V ± 1%
- Rated grid frequency
- 50 Hz / 60 Hz ± 0.1%
- Overload power
- 8 kVA
- Overload power
- 10 kVA
- Max. output current
- 20 A
- Max. output current
- 25 A
- Output voltage waveform
- Pure sine wave
- Transfer time
- Typically 10 ms, max. 20 ms
- THDv (at linear load)
- < 3%
- Peak efficiency (PV-AC)
- 96.6%
- AC charger (grid port and generator port) — max. input power
- 6 kW
- AC charger (grid port and generator port) — max. input power
- 7 kW
- Rated input voltage
- L/N/PE, AC 230 V
- Voltage selection range
- 90 - 280 V
- AC frequency range
- 50 Hz / 60 Hz
- Max. input current
- 26 A
- Max. input current
- 30 A
- Max. AC charging current
- 60 A
- Max. AC charging current
- 80 A
Protection
- Output voltage protection
- Yes
- Overcurrent protection
- Yes
- Short-circuit protection
- Yes
- Surge protection
- Yes
- Temperature protection
- Yes
- Built-in AFCI 2.0 module
- Optional
Features
- DC connection
- Terminal connectors
- AC connection
- Terminal connectors
- Display
- LCD screen
- Communication
- CAN, BMS, dry contact, Bluetooth, optional: Wi-Fi
Documentation and certificates
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DownloadDatasheet
Автономний інвертор Solis S6-EO1P (4–5) кВт · однофазний · 48 В.pdf
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DownloadUser manual
Автономний інвертор Solis S6-EO1P (4–5) кВт · однофазний · 48 В_інструкція.pdf
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DownloadCertificate 1
Автономний інвертор Solis S6-EO1P (4–5) кВт · однофазний · 48 В_сертифікат1.pdf
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Download
Certificate 2
Автономний інвертор Solis S6-EO1P (4–5) кВт · однофазний · 48 В_сертифікат2.pdf
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Download
Certificate 3
Автономний інвертор Solis S6-EO1P (4–5) кВт · однофазний · 48 В_сертифікат3.pdf
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Download
Certificate 4
Автономний інвертор Solis S6-EO1P (4–5) кВт · однофазний · 48 В_сертифікат4.pdf
Frequently asked questions
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Start from the site's average daily consumption and the peak load the inverter has to carry in off-grid mode. The power range of each modification and the recommended PV array size for it are listed in the product card under "Key specifications" — for a precise selection, contact a Solis dealer or use the form below.
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The list of validated batteries is published on the product page — in the compatible-equipment section, where one has already been compiled for that model. The voltage range (LV or HV, depending on the series) is stated in the technical specifications either way. If there is no list, or the battery you need is not on it, contact the Solis Ukraine technical department — compatibility should be confirmed separately.
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Most Solis hybrid and off-grid inverters support connecting a generator with automatic start-up when the battery is discharged. Whether a specific model has this function, and how it is wired, is stated under "Key features" and in the "Technical specifications" table of the product card.
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It depends on the series: single-phase models are designed for a 220 V grid, three-phase models for 380/400 V. The exact connection type for a given product is stated in the "Grid phases" card under "Key specifications".
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Solis equipment carries the manufacturer's warranty, which in Ukraine is administered by official dealers and authorised service centres. The exact term and conditions are stated on the warranty card and on the device's rating plate — for registration and the claim procedure, see the Support section.
Didn't find your answer?
The Solis Ukraine technical department advises on equipment compatibility, wiring diagrams and system configuration.