
Solax X3-FIT15 3-Phase AC Charger 15 kW
X3-FIT15
SolaX X3-FIT 15.0kW 3-Phase AC Coupled Charger – Scalable Storage for Commercial and Domestic Retrofits
The SolaX X3-FIT 15.0kW is a robust AC-coupled, three-phase charger designed to integrate seamlessly into existing or new solar systems. With the ability to store surplus PV energy and provide emergency backup during outages, it’s ideal for commercial or large-scale residential installations seeking maximum energy flexibility.
- Flexible Integration: Designed for retrofitting existing systems or enhancing new installations with storage capability.
- Emergency Backup: Supplies stored power during grid failures to maintain critical loads.
- Low Maintenance Operation: Fanless, naturally cooled design for silent and reliable performance.
- Battery Compatibility: Works with a wide range of high-voltage batteries for efficient energy storage.
- Smart Monitoring: Remote access functionality for easy system oversight and diagnostics.
Technical Specification
- Rated Output Power: 15.0kW
- Protection: IP65
- Weight: 38kg
- Dimensions: 457 x 654 x 228mm (W x H x D)
✅ Upgrade your energy independence with the SolaX X3-FIT 15.0kW – efficient, scalable, and ready for any installation.

Product | Charge Controller |
Type | Three Phase |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.