The Tigo TSS-200-US-G is a required component for Tigo EI grid-tied energy storage systems, automatically switching to solar, battery, or generator power when grid loss is detected.

Key Features

• 200A Automatic Transfer Switch with Generator Support — Supports pure sine wave generators up to 24kW with 2-wire start for extended whole-home backup capability.
• 120V/240V Split Phase Output — Built-in transformer delivers both essential load and whole-home backup power with seamless grid-to-backup switching under 500ms.
• NEMA 4X / IP65 Enclosure — Dust and watertight rated for reliable indoor and outdoor wall-mount installations in demanding environments.
• RS485 Communications & Energy Metering — Built-in RS485 interface and import/export energy metering at ±1% accuracy for comprehensive system monitoring.
• Manual Control Bypass Switch Included — Allows safe manual override for maintenance and service without full system shutdown.

Powered by the Tigo Energy Intelligence platform, the TSS-200-US-G integrates seamlessly with Tigo EI Inverters for intelligent whole-home energy management and generator backup. Compatible with the TSI-7.6K-US and TSI-11.4K-US hybrid inverters.

Rated for a maximum grid power of 48000VA with 160A maximum continuous input current and a 200A main circuit breaker. Generator switchover time is under 500ms with battery charging frequency range maintained between 55–65Hz.

Certified to UL1741, UL869A, CSA 22.2 No. 107.1, and CSA 22.2 No. 0.19, this ATS meets the most rigorous safety and grid interconnection standards. A complete transfer switch solution for residential solar storage installations requiring code-compliant whole-home and generator backup.

Technical Specifications