Tomzn 4P AC Three Phase Dual Power Automatic Transfer Switch ATS

Note: power will be interrupted when switching. Switch time<2.5S

• External auxiliary (control) contacts/points provided — allows external devices (timers, Wi-Fi modules, PLCs, etc.) to control the switching logic

• You can integrate a timer or Wi-Fi relay to force switching at scheduled times or under external commands

• Suitable for loads up to 160 A or 250 A (depending on the model)

• Operates at standard three-phase voltages (e.g. 400 V) and frequencies (50/60 Hz)

How It Works:

• Prioritizes Normal Power; switches to Backup Power when needed
• Manual handle allows override in emergencies or testing
• Brief interruption during transfer (<2.5s); not suitable for sensitive loads unless protected by UPS
• Does not control generator startup/shutdown