Tigo 50A EI Automatic Transfer Switch

The Tigo 50A EI Automatic Transfer Switch (ATS) is a required component of the Tigo EI Residential Solar + Energy Storage Solution. Designed for split-phase residential systems, the ATS continuously monitors grid power and automatically transitions your home to solar and battery backup when a grid outage is detected. Once utility power is restored, the system safely and seamlessly returns to normal grid-connected operation.

This 50A model is ideal for essential-load or partial-home backup applications, delivering fast switchover, reliable performance, and a compact, weather-rated enclosure suitable for indoor or outdoor installation.

Benefits

• Enables automated essential-load or partial-home backup
• Automatically switches between grid and backup power during outages
• Provides system status visibility through the Tigo EI mobile app and online portal
• Supports split-phase residential solar + storage configurations
• Compact design helps simplify installation without main service upgrades

Features

• 120/240VAC split-phase output
• Fast grid-to-backup switchover (under 2 seconds)
• Main lug only (MLO) panelboard design for 50A systems
• NEMA 4X / IP65 enclosure for dust- and water-tight protection
• Natural convection cooling with quiet operation
• Wall-mount installation for residential applications

Key Specifications (50A Model)

• Rated Backup Power: 10,000 VA
• Maximum Backup Power: 11,400 W
• Maximum Continuous Output Current: 48A @ 240V
• Output Voltage: 120/240VAC
• Operating Voltage Range: 180–270V
• Enclosure Rating: NEMA 4X (IP65)
• Installation: Wall-mounted
• Operating Temperature: -13°F to 122°F
• Warranty: 11 years