مفتاح تحويل تلقائي ذكي بين مصدرين للكهرباء من تومزن - ATS-125A — Three Phase
Your order’s journey to your door
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Order confirmed
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Tracking update
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Important notes
The courier does not offer inspection upon delivery.
Some orders may be delayed due to shipping conditions. We remain responsible for delivering them as quickly as possible.
You can request a return without a reason within 14 days — Read the exchange and returns policy
You can return a damaged or defective product during the 24-month warranty — Read the warranty
Description
- TOMZN TOQ7S 4P Smart Automatic Transfer Switch for three-phase dual power systems. - Available in 63A, 100A, and 125A versions with four-pole switching for L1, L2, L3, and Neutral. - Automatically transfers power to an available backup source during primary power failure. - Automatically returns to the primary source when electricity is restored. - Supports Tuya Smart and Smart Life for remote source selection, scheduling, and timer functions. - Features automatic and manual operation with a switching time of less than 50 milliseconds. - Ideal for three-phase residential, commercial, industrial, generator, and compatible solar power systems.
Specifications
| TOMZN | |
| TOQ7S – 4P | |
| Smart Automatic Transfer Switch | |
| Wi-Fi | |
| AC 100–240V | |
| 125A | |
| 4P | |
| 2 | |
| Less than 50ms | |
| Less than 50ms | |
| 2,000 Operations | |
| 5,000 Operations | |
| Electrical Distribution Panel | |
| 140 × 109 × 78 mm | |
| 2 years | |
| SmartLife / Tuya |
Key features
- Smart Automatic Transfer Switch for three-phase dual power systems.
- Available in 63A, 100A, and 125A versions.
- Wi-Fi connectivity with Tuya Smart and Smart Life.
- Four-pole configuration for switching L1, L2, L3, and Neutral.
- Automatically transfers to the backup source when the primary source fails.
- Automatically returns to the primary source when power is restored.
- Supports manual and automatic operation.
- Remote power source selection through the mobile app when connected.
- Fast transfer time of less than 50 milliseconds.
- Supports scheduling, timers, and countdown functions.
- Configurable power source priority.
- Rated impulse withstand voltage of 8kV.
- DIN rail installation inside electrical distribution panels.
Common uses
- Automatic switching between utility power and three-phase generators.
- Switching between utility power and compatible solar inverter systems.
- Backup electrical power systems.
- Villas and large residential buildings.
- Factories and workshops.
- Commercial facilities and retail stores.
- Offices and administrative buildings.
- Power source priority management.
- Reducing manual switching during power outages.
- Supplying loads from an available backup power source.
Package contents
- TOMZN TOQ7S 4P Smart Automatic Transfer Switch.
- User Manual.
- Original Packaging.
How to use
- 1. Have a qualified electrician install the device inside an electrical distribution panel.
- 2. Connect both three-phase power sources and the load according to the manufacturer's wiring diagram.
- 3. Configure the primary and backup power sources.
- 4. Download Tuya Smart or Smart Life.
- 5. Connect the device to a compatible Wi-Fi network.
- 6. Select automatic or manual operating mode.
- 7. The ATS automatically transfers to the available backup source during primary power failure.
- 8. It automatically returns to the primary source when power is restored, according to the selected priority.
Product notes
- Designed for three-phase, four-wire electrical systems.
- The control circuit uses 220–230V between Live and Neutral.
- Four-pole design switches all three phases and neutral together.
- The Wi-Fi module is powered by Source A, so app control may become unavailable during a Source A outage.
- Automatic transfer functionality can continue independently of app connectivity.
- Does not automatically start a generator without a separate compatible starting system.
- Transfer time below 50ms does not guarantee uninterrupted operation of sensitive electronic equipment.
- Proper short-circuit and overload protection must be installed separately.
- Power source compatibility, phase sequence, and grounding must be verified before operation.
- Professional three-phase electrical installation is required.

















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