Fox ESS R75 75kW R Series Three-Phase 9-MPPT Commercial Grid-Tied Inverter
The Fox ESS R75 (part number FE-R-75.0) is a 75 kW three-phase, 9-MPPT commercial grid-tied inverter from the Fox ESS R Series. Designed for large-scale commercial PV installations, the R75 accepts a maximum DC input of 75,000 W at up to 1,100 V across 9 independent MPPT trackers with support for 13 A or 16 A input current per string. It achieves a Euro efficiency of 98.2% and features IP66 and C5 corrosion protection for demanding installation environments. The R75 includes PV string current monitoring, Arc Fault Circuit Interrupter (AFCI) function, PID recovery, and built-in WiFi with app-based monitoring. Compatible with bifacial modules. Part of the R Series range covering 75 kW to 110 kW. This is a built-to-order (BTO) product. Available from DECO Group, a UK-based solar trade wholesaler.
Key Technical Details
- Part number: FE-R-75.0
- Supplier part number: R75
- Model: R75
- Inverter type: Three-phase commercial grid-tied
- Rated output power: 75,000 W
- Maximum AC power (5 minutes): 75,000 W
- Surge AC power (1 second): 75,000 W
- Euro efficiency: 98.2%
- Transformer: High-frequency
- Maximum PV input power: 75,000 W
- Maximum input voltage: 1,100 V
- MPPT voltage range: 200 V to 1,100 V
- DC startup voltage: 250 V
- Maximum DC input current: 234 A total
- Input current per string: 13 A / 16 A
- Maximum DC inputs: 9
- MPPT quantity: 9
- Connector: MC4
- Integrated DC switch: No
- Ingress protection: IP66
- Corrosion protection: C5
- Weight: 90 kg
Key Features
- 9 independent MPPT trackers for maximum design flexibility across large commercial roof arrays
- 98.2% Euro efficiency for minimal conversion losses at commercial scale
- IP66 and C5 corrosion protection for harsh and coastal installation environments
- PV string current monitoring for individual string-level fault detection
- Integrated AFCI (Arc Fault Circuit Interrupter) function for proactive fire risk reduction
- PID (Potential Induced Degradation) recovery function to maintain panel performance over time
- Compatible with bifacial solar modules at 13 A or 16 A input current per string
- Built-in WiFi with LED display and app-based monitoring
- High input voltage ceiling of 1,100 V for long string lengths
- Part of the R Series range covering 75 kW to 110 kW
- Built-to-order (BTO) product
System Compatibility
- Part of the Fox ESS R Series three-phase commercial grid-tied range (75 kW to 110 kW)
- MC4 DC connectors
- Compatible with high-efficiency and bifacial solar modules
- 9 MPPT inputs for flexible string design across large or complex commercial roof areas
Protection Features
- PV string current monitoring
- Arc Fault Circuit Interrupter (AFCI) function
- PID recovery
- IP66 ingress protection
- C5 corrosion protection
Certifications and Compliance
Installation Notes
- At 90 kg, mechanical lifting equipment or a multi-person team is required for installation
- IP66 and C5 rated for outdoor installation in harsh and corrosive environments
- No integrated DC switch; external DC isolation must be provided
- This is a built-to-order (BTO) product; contact DECO Group for availability and lead times
- Must be installed by a qualified electrician or technician in compliance with local wiring regulations
Warranty
- Standard warranty: 5 years
- Extended warranty: 10 years when the installation is registered with Fox ESS online
Common Questions
Click a question below to reveal the answer.
How many MPPT inputs does the Fox ESS R75 have?
The R75 has 9 independent MPPT trackers, allowing flexible string design across large commercial roof arrays with varying orientations or shading conditions.
Is the Fox ESS R75 suitable for coastal installations?
Yes. The R75 features IP66 ingress protection and C5 corrosion protection, making it suitable for harsh environments including coastal and industrial sites.
Does the Fox ESS R75 include a DC switch?
No. The R75 does not include an integrated DC switch. External DC isolation must be provided as part of the installation design.
Is the Fox ESS R75 available from stock?
The R75 is a built-to-order (BTO) product. Contact DECO Group for current availability and lead times.
What is the maximum input voltage on the Fox ESS R75?
The R75 accepts a maximum PV input voltage of 1,100 V with a DC startup voltage of 250 V and an MPPT range starting from 200 V.
DECO Group supplies Fox ESS R Series commercial grid-tied inverters alongside three-phase monitoring equipment, metering hardware, and system accessories. Browse our Fox ESS commercial inverter catalogue for complete large-scale PV system components.
About DECO Group
We supply Fox ESS commercial and residential inverters, battery storage, and system accessories to professional solar installers and electrical contractors across the UK. Our R Series range covers commercial-scale three-phase grid-tied inverters from 75 kW to 110 kW for large PV installations. Visit decogroup.co.uk or contact our commercial team for project-specific support.
