Tigo 11.4kW 48A 240V Single Phase Hybrid Inverter | TSI-11.4K-US
£1,521.79
Sale price
£1,521.79
Regular price
£2,459.00
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Tigo 11.4kW 48A 240V Single Phase Hybrid Inverter | TSI-11.4K-US
£1,521.79
Sale price
£1,521.79
Regular price
£2,459.00
Shipping calculated at checkout.
601-2111K4-0003
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Description
The Tigo TSI-11.4K-US is a smart hybrid inverter engineered to orchestrate energy production, storage, and consumption for residential solar and battery systems.
Key Features
- Up to 200% DC Oversizing — Supports a 2:1 DC/AC ratio with 80V starting voltage for maximum solar harvest and system flexibility.
- Built-In Wi-Fi & Energy Intelligence Platform — Powered by Tigo EI for seamless monitoring, optimization, and cellular backup communication.
- NEC 690.12 Rapid Shutdown Compliant — Fully compatible with Tigo TS4 MLPE for module-level monitoring and rapid shutdown protection.
- NEMA 4X/IP65 Enclosure — Rated for outdoor installation with natural convection cooling and operating range of -13°F to 140°F.
- 152-Month Standard Warranty — Industry-leading coverage backed by a lightweight 45 lb. design and under 10-minute commissioning.
Designed for seamless integration with the Tigo EI Battery, this inverter delivers intelligent energy management for larger residential and light commercial solar systems. Compatible with the 200A ATS for automatic transfer switching.
Certified to UL1741:2021 Ed.3 and IEEE 1547:2018, the TSI-11.4K-US meets rigorous grid interconnection and safety standards. Listings include CA-CEC, CA Rule 21 CSIP, CA CPUC-SGIP, and Hawaii utility rules.
With a maximum efficiency of 98.5% and CEC efficiency of 98.0% at 240V, this inverter delivers top-tier energy conversion for demanding installations. A complete solution for installers requiring high-output, intelligent, code-compliant solar storage.
Technical Specifications
| Specification | Details |
|---|---|
| Model | TSI-11.4K-US |
| Nominal Power Output | 11400 W @ 240V / 9880 W @ 208V |
| Max. Apparent Power | 11400 VA |
| Nominal AC Voltage | 208V / 240V |
| Max. Output Current (Grid) | 48A |
| Max. Output Current (Backup) | 75A |
| Grid Frequency | 50/60 Hz |
| Power Factor | >0.99 |
| THDI | <3% |
| Max. Recommended PV Power | 22800 W |
| MPPT Voltage Range | 80V – 550V |
| Full-Load Voltage Range | 220V – 500V |
| Number of MPPTs | 4 |
| PV Strings per MPPT | 2 |
| Max. Input Current (Imp/Isc) | 13.5A / 16.9A |
| Nominal Battery DC Voltage | 400V |
| I/O DC Current | Up to 32.5A |
| I/O DC Power | 11700W |
| Max. AC Backup Power | 18000 VA |
| Max. Efficiency | 98.5% |
| CEC Efficiency @ 240V / 208V | 98.0% / 97.5% |
| Operating Temperature | -13°F to 140°F (-25°C to 60°C) |
| Enclosure Rating | NEMA 4X / IP65 |
| Cooling | Natural Convection |
| Dimensions (W x D x H) | 15.8 x 7.4 x 25.2 in. |
| Weight | 45.2 lbs |
| Altitude | 9843 ft. (3000 m) |
| Communication | Wi-Fi Standard, 4G Optional |
| Warranty | 152 Months |
| Certifications | UL1741:2021 Ed.3, IEEE 1547:2018, UL1699B, FCC Part 15B |
| Listings | CA-CEC, CA Rule 21, CA CPUC-SGIP, Hawaii Rule 14H |
| Compatible ATS | 200A ATS |
| Part Number | 601-2111K4-0003 |
Return policy
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Shipping
We will work quickly to ship your order as soon as possible. Once your order has shipped, you will receive an email with further information. Delivery times vary depending on your location.
Manufacturing
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.