Solis S5-GC40K 40kW 3-Phase Quad MPPT Solar Inverter with Integrated DC Switch
The Solis S5-GC40K-DC is a 40kW three-phase grid-tied string inverter from Ginlong Solis, designed for commercial and industrial rooftop solar installations. It features 4 independent MPPT trackers with 2 string inputs each (8 strings total), enabling flexible array design across multiple roof orientations or shading scenarios. The integrated DC isolator switch is built into the unit — no separate external switch required — keeping the installation compact and compliant.
Operating at up to 98.7% peak efficiency with an EU efficiency of 98.3%, the S5-GC40K-DC supports a DC/AC oversizing ratio of over 150% (up to 60kW PV input), accepts string currents of up to 16A per string (compatible with high-power and bifacial modules), and includes built-in AFCI arc-fault protection, Type II surge protection on both DC and AC sides, and intelligent redundant fan cooling. Remote monitoring and control is available via SolisCloud with RS485, optional Wi-Fi or GPRS communication.
DC Input Specifications
| Parameter | Value |
|---|---|
| Recommended max. PV power | 60 kW (>150% DC/AC ratio) |
| Max. input voltage (absolute) | 1100 V |
| Rated DC voltage | 600 V |
| Start-up voltage | 180 V |
| MPPT voltage range | 200 – 1000 V |
| Number of MPPTs | 4 |
| Max. DC string inputs | 8 (2 per MPPT) |
| Max. input current per MPPT | 32 A |
| Max. input current per string | 16 A |
| Max. short circuit current per MPPT | 50 A |
| Total max. DC input current | 128 A (4 × 32 A) |
| DC connector | MC4 (16 connectors included) |
| Integrated DC isolator switch | Yes — included (-DC variant) |
AC Output Specifications
| Parameter | Value |
|---|---|
| Rated output power | 40 kW |
| Max. apparent output power | 44 kVA |
| Max. output power | 44 kW |
| Rated grid voltage | 3/N/PE, 220V/380V or 230V/400V |
| Rated grid frequency | 50 Hz / 60 Hz |
| Rated grid output current (230/400V) | 57.7 A |
| Rated grid output current (220/380V) | 60.8 A |
| Max. output current | 66.9 A |
| Power factor | >0.99 (adjustable 0.8 leading – 0.8 lagging) |
| THDi | <3% |
| AC connection | OT terminal |
Efficiency & General Data
| Parameter | Value |
|---|---|
| Max. efficiency | 98.7% |
| EU efficiency | 98.3% |
| Topology | Transformerless |
| Dimensions (W × H × D) | 647 × 629 × 252 mm |
| Weight (with DC switch) | 47 kg |
| Operating temperature range | -25°C to +60°C |
| Relative humidity | 0 – 100% |
| Max. operating altitude | 4000 m |
| IP rating | IP66 |
| Cooling | Intelligent redundant fan cooling |
| Night-time self-consumption | <1 W |
| Display | LCD |
| Communication | RS485 standard; Wi-Fi / GPRS optional |
| Grid connection standard (UK) | G98 / G99 |
| Safety / EMC standards | IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4, EN 50530, IEC 62116, IEC 61727 |
| Warranty | 5 years standard (extendable to 10 or 20 years) |
Key Features
4 × independent MPPT — 8 string inputs
Four independent MPPT trackers with two string inputs each allow the array to be split across up to four different orientations, roof pitches, or shading conditions. Each tracker optimises independently — a poorly performing string does not drag down the others. Ideal for complex commercial rooftops with multiple aspects or partial shading.
>150% DC/AC ratio — maximise energy harvest
The inverter accepts up to 60kW of DC input against a 40kW AC rating. This allows the array to be oversized relative to the inverter, pushing the unit to full output for more hours per day and dramatically improving the overall system yield — particularly on sites where real-world irradiance rarely hits STC conditions.
16A string current — high-power module ready
Each string input accepts up to 16A, making the inverter compatible with the latest generation of high-power modules (600W+) and bifacial panels, which produce higher short-circuit currents than older panel designs. No need for fusing individual strings at the DC combiner at these currents.
Integrated DC isolator switch — G99 ready
The -DC variant includes a built-in DC isolator switch, satisfying the requirement for safe disconnection of the PV array without a separate external switch. This keeps cabling cleaner, reduces the number of enclosures on the wall, and meets the UK G98/G99 and DNO installation requirements for commercial systems.
AFCI arc-fault protection — reduces fire risk
The built-in AFCI (Arc-Fault Circuit Interrupter) continuously monitors the DC side for arc-fault signatures and shuts down the affected string before a fault can escalate into a fire. Important for commercial rooftop and warehouse installations where a fire in the PV array could threaten the building and its occupants. AFCI activation must be enabled during commissioning.
SolisCloud — smart I-V scanning & remote management
Register the inverter on SolisCloud (scan the QR code on the unit) for full remote monitoring, firmware updates, and diagnostics. The intelligent smart I-V curve scan analyses each string's current-voltage curve remotely, identifying underperforming strings, module degradation, partial shading, or soiling without a site visit. String-level monitoring is included as standard.
Protection Features
AC side: AC over-current protection · Anti-islanding protection · Grid monitoring (voltage, frequency) · Temperature protection · Type II AC surge protection
Monitoring: String current monitoring · Smart I-V curve diagnostics · SolisCloud remote upgrade and control · Export power control supported
Solis S5-GC33K-DC 33kW 3-Phase Inverter | Solis S5-GC50K-HV 50kW 3-Phase Inverter | Solis Wi-Fi Data Logger | Solis Export Power Manager (SOL-EPM) | AIKO Neostar 3S 480W Solar Panel | JA Solar JAM54D40-455/LB Bifacial Panel | AC/DC SPD Surge Protection Devices
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Solis S5-GC40K 40kW 3-Phase Quad MPPT Solar Inverter with Integrated DC Switch
The Solis S5-GC40K-DC is a 40kW three-phase grid-tied string inverter from Ginlong Solis, designed for commercial and industrial rooftop solar installations. It features 4 independent MPPT trackers with 2 string inputs each (8 strings total), enabling flexible array design across multiple roof orientations or shading scenarios. The integrated DC isolator switch is built into the unit — no separate external switch required — keeping the installation compact and compliant.
Operating at up to 98.7% peak efficiency with an EU efficiency of 98.3%, the S5-GC40K-DC supports a DC/AC oversizing ratio of over 150% (up to 60kW PV input), accepts string currents of up to 16A per string (compatible with high-power and bifacial modules), and includes built-in AFCI arc-fault protection, Type II surge protection on both DC and AC sides, and intelligent redundant fan cooling. Remote monitoring and control is available via SolisCloud with RS485, optional Wi-Fi or GPRS communication.
DC Input Specifications
| Parameter | Value |
|---|---|
| Recommended max. PV power | 60 kW (>150% DC/AC ratio) |
| Max. input voltage (absolute) | 1100 V |
| Rated DC voltage | 600 V |
| Start-up voltage | 180 V |
| MPPT voltage range | 200 – 1000 V |
| Number of MPPTs | 4 |
| Max. DC string inputs | 8 (2 per MPPT) |
| Max. input current per MPPT | 32 A |
| Max. input current per string | 16 A |
| Max. short circuit current per MPPT | 50 A |
| Total max. DC input current | 128 A (4 × 32 A) |
| DC connector | MC4 (16 connectors included) |
| Integrated DC isolator switch | Yes — included (-DC variant) |
AC Output Specifications
| Parameter | Value |
|---|---|
| Rated output power | 40 kW |
| Max. apparent output power | 44 kVA |
| Max. output power | 44 kW |
| Rated grid voltage | 3/N/PE, 220V/380V or 230V/400V |
| Rated grid frequency | 50 Hz / 60 Hz |
| Rated grid output current (230/400V) | 57.7 A |
| Rated grid output current (220/380V) | 60.8 A |
| Max. output current | 66.9 A |
| Power factor | >0.99 (adjustable 0.8 leading – 0.8 lagging) |
| THDi | <3% |
| AC connection | OT terminal |
Efficiency & General Data
| Parameter | Value |
|---|---|
| Max. efficiency | 98.7% |
| EU efficiency | 98.3% |
| Topology | Transformerless |
| Dimensions (W × H × D) | 647 × 629 × 252 mm |
| Weight (with DC switch) | 47 kg |
| Operating temperature range | -25°C to +60°C |
| Relative humidity | 0 – 100% |
| Max. operating altitude | 4000 m |
| IP rating | IP66 |
| Cooling | Intelligent redundant fan cooling |
| Night-time self-consumption | <1 W |
| Display | LCD |
| Communication | RS485 standard; Wi-Fi / GPRS optional |
| Grid connection standard (UK) | G98 / G99 |
| Safety / EMC standards | IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4, EN 50530, IEC 62116, IEC 61727 |
| Warranty | 5 years standard (extendable to 10 or 20 years) |
Key Features
4 × independent MPPT — 8 string inputs
Four independent MPPT trackers with two string inputs each allow the array to be split across up to four different orientations, roof pitches, or shading conditions. Each tracker optimises independently — a poorly performing string does not drag down the others. Ideal for complex commercial rooftops with multiple aspects or partial shading.
>150% DC/AC ratio — maximise energy harvest
The inverter accepts up to 60kW of DC input against a 40kW AC rating. This allows the array to be oversized relative to the inverter, pushing the unit to full output for more hours per day and dramatically improving the overall system yield — particularly on sites where real-world irradiance rarely hits STC conditions.
16A string current — high-power module ready
Each string input accepts up to 16A, making the inverter compatible with the latest generation of high-power modules (600W+) and bifacial panels, which produce higher short-circuit currents than older panel designs. No need for fusing individual strings at the DC combiner at these currents.
Integrated DC isolator switch — G99 ready
The -DC variant includes a built-in DC isolator switch, satisfying the requirement for safe disconnection of the PV array without a separate external switch. This keeps cabling cleaner, reduces the number of enclosures on the wall, and meets the UK G98/G99 and DNO installation requirements for commercial systems.
AFCI arc-fault protection — reduces fire risk
The built-in AFCI (Arc-Fault Circuit Interrupter) continuously monitors the DC side for arc-fault signatures and shuts down the affected string before a fault can escalate into a fire. Important for commercial rooftop and warehouse installations where a fire in the PV array could threaten the building and its occupants. AFCI activation must be enabled during commissioning.
SolisCloud — smart I-V scanning & remote management
Register the inverter on SolisCloud (scan the QR code on the unit) for full remote monitoring, firmware updates, and diagnostics. The intelligent smart I-V curve scan analyses each string's current-voltage curve remotely, identifying underperforming strings, module degradation, partial shading, or soiling without a site visit. String-level monitoring is included as standard.
Protection Features
AC side: AC over-current protection · Anti-islanding protection · Grid monitoring (voltage, frequency) · Temperature protection · Type II AC surge protection
Monitoring: String current monitoring · Smart I-V curve diagnostics · SolisCloud remote upgrade and control · Export power control supported
Solis S5-GC33K-DC 33kW 3-Phase Inverter | Solis S5-GC50K-HV 50kW 3-Phase Inverter | Solis Wi-Fi Data Logger | Solis Export Power Manager (SOL-EPM) | AIKO Neostar 3S 480W Solar Panel | JA Solar JAM54D40-455/LB Bifacial Panel | AC/DC SPD Surge Protection Devices
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Solis S5-GC40K-DC is a 40kW three-phase grid-tied string inverter from Ginlong Solis, designed for commercial and industrial rooftop solar installations. It features 4 independent MPPT trackers with 2 string inputs each (8 strings total), enabling flexible array design across multiple roof orientations or shading scenarios. The integrated DC isolator switch is built into the unit — no separate external switch required — keeping the installation compact and compliant.
Operating at up to 98.7% peak efficiency with an EU efficiency of 98.3%, the S5-GC40K-DC supports a DC/AC oversizing ratio of over 150% (up to 60kW PV input), accepts string currents of up to 16A per string (compatible with high-power and bifacial modules), and includes built-in AFCI arc-fault protection, Type II surge protection on both DC and AC sides, and intelligent redundant fan cooling. Remote monitoring and control is available via SolisCloud with RS485, optional Wi-Fi or GPRS communication.
DC Input Specifications
| Parameter | Value |
|---|---|
| Recommended max. PV power | 60 kW (>150% DC/AC ratio) |
| Max. input voltage (absolute) | 1100 V |
| Rated DC voltage | 600 V |
| Start-up voltage | 180 V |
| MPPT voltage range | 200 – 1000 V |
| Number of MPPTs | 4 |
| Max. DC string inputs | 8 (2 per MPPT) |
| Max. input current per MPPT | 32 A |
| Max. input current per string | 16 A |
| Max. short circuit current per MPPT | 50 A |
| Total max. DC input current | 128 A (4 × 32 A) |
| DC connector | MC4 (16 connectors included) |
| Integrated DC isolator switch | Yes — included (-DC variant) |
AC Output Specifications
| Parameter | Value |
|---|---|
| Rated output power | 40 kW |
| Max. apparent output power | 44 kVA |
| Max. output power | 44 kW |
| Rated grid voltage | 3/N/PE, 220V/380V or 230V/400V |
| Rated grid frequency | 50 Hz / 60 Hz |
| Rated grid output current (230/400V) | 57.7 A |
| Rated grid output current (220/380V) | 60.8 A |
| Max. output current | 66.9 A |
| Power factor | >0.99 (adjustable 0.8 leading – 0.8 lagging) |
| THDi | <3% |
| AC connection | OT terminal |
Efficiency & General Data
| Parameter | Value |
|---|---|
| Max. efficiency | 98.7% |
| EU efficiency | 98.3% |
| Topology | Transformerless |
| Dimensions (W × H × D) | 647 × 629 × 252 mm |
| Weight (with DC switch) | 47 kg |
| Operating temperature range | -25°C to +60°C |
| Relative humidity | 0 – 100% |
| Max. operating altitude | 4000 m |
| IP rating | IP66 |
| Cooling | Intelligent redundant fan cooling |
| Night-time self-consumption | <1 W |
| Display | LCD |
| Communication | RS485 standard; Wi-Fi / GPRS optional |
| Grid connection standard (UK) | G98 / G99 |
| Safety / EMC standards | IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-2/-3/-4, EN 50530, IEC 62116, IEC 61727 |
| Warranty | 5 years standard (extendable to 10 or 20 years) |
Key Features
4 × independent MPPT — 8 string inputs
Four independent MPPT trackers with two string inputs each allow the array to be split across up to four different orientations, roof pitches, or shading conditions. Each tracker optimises independently — a poorly performing string does not drag down the others. Ideal for complex commercial rooftops with multiple aspects or partial shading.
>150% DC/AC ratio — maximise energy harvest
The inverter accepts up to 60kW of DC input against a 40kW AC rating. This allows the array to be oversized relative to the inverter, pushing the unit to full output for more hours per day and dramatically improving the overall system yield — particularly on sites where real-world irradiance rarely hits STC conditions.
16A string current — high-power module ready
Each string input accepts up to 16A, making the inverter compatible with the latest generation of high-power modules (600W+) and bifacial panels, which produce higher short-circuit currents than older panel designs. No need for fusing individual strings at the DC combiner at these currents.
Integrated DC isolator switch — G99 ready
The -DC variant includes a built-in DC isolator switch, satisfying the requirement for safe disconnection of the PV array without a separate external switch. This keeps cabling cleaner, reduces the number of enclosures on the wall, and meets the UK G98/G99 and DNO installation requirements for commercial systems.
AFCI arc-fault protection — reduces fire risk
The built-in AFCI (Arc-Fault Circuit Interrupter) continuously monitors the DC side for arc-fault signatures and shuts down the affected string before a fault can escalate into a fire. Important for commercial rooftop and warehouse installations where a fire in the PV array could threaten the building and its occupants. AFCI activation must be enabled during commissioning.
SolisCloud — smart I-V scanning & remote management
Register the inverter on SolisCloud (scan the QR code on the unit) for full remote monitoring, firmware updates, and diagnostics. The intelligent smart I-V curve scan analyses each string's current-voltage curve remotely, identifying underperforming strings, module degradation, partial shading, or soiling without a site visit. String-level monitoring is included as standard.
Protection Features
AC side: AC over-current protection · Anti-islanding protection · Grid monitoring (voltage, frequency) · Temperature protection · Type II AC surge protection
Monitoring: String current monitoring · Smart I-V curve diagnostics · SolisCloud remote upgrade and control · Export power control supported
Solis S5-GC33K-DC 33kW 3-Phase Inverter | Solis S5-GC50K-HV 50kW 3-Phase Inverter | Solis Wi-Fi Data Logger | Solis Export Power Manager (SOL-EPM) | AIKO Neostar 3S 480W Solar Panel | JA Solar JAM54D40-455/LB Bifacial Panel | AC/DC SPD Surge Protection Devices
