Tigo 11.4kW 400V 208/240VAC Energy Storage Hybrid Inverter/Charger

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.

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.

Product Specifications

Tigo 11.4kW 400V 208/240VAC Energy Storage Hybrid Inverter/Charger Product 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

Tigo 11.4kW 400V 208/240VAC Energy Storage Hybrid Inverter/Charger

Description

Product Specifications

Tigo 11.4kW 400V 208/240VAC Energy Storage Hybrid Inverter/Charger Product Specifications

Product Manual

Data Sheet

Product Warranty

Warranty Information

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