SolaX X3 Mega 50kW 3 Phase String Inverter

SolaX X3 Mega 50kW 3 Phase String Inverter

The SolaX X3 Mega 50kW is a high-performance three-phase string inverter designed for large commercial and industrial solar PV systems. With up to 98.4% maximum efficiency, advanced safety features, and a flexible multi-MPPT design, it delivers reliable, high-yield energy conversion for demanding applications.

Key Features

• Nominal output power: 50,000W (50kW)
• Maximum DC input power: 75,000W (75kW) – supports 150% PV oversizing
• Wide MPPT voltage range: 180–1000V (start-up voltage: 200V)
• Maximum DC input voltage: 1100V
• 5 independent MPPTs, 2 strings per tracker
• Maximum input current per MPPT: 32A (short-circuit current: 46A)
• AC output current: up to 75.8A (rated), 83.3A (max.)
• AC output apparent power: 55kVA
• 150% PV oversizing and 110% AC overloading capability
• Maximum efficiency: 98.4% (European efficiency: 98.1%)
• IP66 weatherproof protection for outdoor/indoor installation
• Type II SPD on both AC & DC sides
• Arc-fault circuit interrupter (AFCI) for enhanced fire safety (optional)
• Comprehensive protections: over/under voltage, overcurrent, DC isolation, anti-islanding, string fault detection, over temperature, residual current, grid monitoring
• Smart I-V curve diagnostics and string current monitoring
• Built-in export power control and remote monitoring (WiFi/LAN/4G options)
• Night-time reactive power compensation and 24-hour operation monitoring
• Smart fan cooling for efficient heat dissipation
• Fanless design for silent operation (no internal fan)
• Aluminium AC cable connection available
• 5-year standard warranty

Technical Specifications

• Phases: 3 (Three-phase)
• Max. DC input power: 75,000W
• Max. DC input voltage: 1100V
• MPPT voltage range: 180–1000V
• Start-up voltage: 200V
• Number of MPPTs: 5
• Strings per MPPT: 2
• Max. input current per MPPT: 32A
• Max. short-circuit current per MPPT: 46A
• Rated AC output power: 50,000W
• Max. AC output apparent power: 55,000VA
• Rated AC output current: 75.8A / 72.5A
• Max. AC output current: 83.3A / 79.7A
• Nominal AC voltage: 220/380V, 230/400V, 3/N/PE, 3/PE
• AC voltage range: 304–460V
• Nominal AC frequency: 50/60Hz (±5Hz)
• Power factor: 0.8 leading ~ 0.8 lagging
• THDi: <3%
• Night-time consumption: <2W
• Operating temperature: -30°C to +60°C (derating above 45°C)
• Max. altitude: 4000m (derating above 3000m)
• Relative humidity: 0–100%
• Ingress protection: IP66
• Dimensions (W × H × D): 630 × 521 × 286 mm
• Weight: 44.5 kg
• Cooling: Smart fan cooling
• Communication: RS485, USB, DRM, PLC (optional), WiFi/LAN/4G (optional)
• Display: LCD (optional), LED indicators
• Certifications: VDE4105, EN 50549, AS 4777.2, IEC 62109-1/2, IEC 61727, IEC 62116, CEI 0-21, EN 50530, and more
• Warranty: 5 years standard

Applications

• Large commercial and industrial solar PV systems
• Ground-mount and rooftop installations
• Projects requiring high reliability, advanced safety, and remote monitoring

Please note: Delivery times may vary depending on location, with specific details outlined below.

Standard Delivery

UK Mainland 

• Delivery Time: 2–4 working days
• Free Delivery on all orders

Express Delivery

UK Mainland

• Delivery Time: 1–3 working days
• Delivery fee of £15

Channel Islands

• Postcodes Covered: GY*, IM*, JE* 
• Minimum Order: £50
• Delivery Fee: £70

Northern Ireland, Offshore Territories & Scottish Islands 

• Postcodes Covered: BT*, HS*, KW, ZE
• Minimum Order: £50
• Delivery Fee: £35

Same Day Delivery 

• Eligible Postcodes:
  E*, EC*, N*, NW*, SE*, SW*, W*, WC*, HA*, UB*, EN*, IG*, RM*, KT*, SM*, CR*, BR*, DA*, TW*
• Minimum Order: £50
• Same Day Delivery Fee: £60
• Special Requests or Locations:
  For areas outside these postcodes or urgent quotes, please email orders@qualityheating.co.uk and we’ll do our best to accommodate.

Collections

Want to collect your order instead?You’re welcome to do so — just email us at orders@qualityheating.co.uk or message us via WhatsApp with your preferred collection time, and we’ll confirm the details.

Collection address: 284 Water Rd, Unit 9, London, HA0 1HX