Ketofa 2P 100A AC110V Automatic Transfer Switch, DIN Rail Mini ATS 50/60Hz
Ketofa 2P 100A AC110V Automatic Transfer Switch, DIN Rail Mini ATS 50/60Hz
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About This
- Functions & Features】The 100A 2P dual power automatic transfer switch is designed for infrequent PC-level switching, supporting both automatic and manual operation. It can test the status of the main power and backup power in real time. When Source A fails, the system switches to Source B within 0.05s to ensure continuous, reliable, and safe power supply. Once Source A restores, it automatically switches back. Both power inputs support mains, generator, or photovoltaic connections.
- 【Automatic Mode】In Auto Mode, set the left switch to “Auto” and the right handle to Source A. When Source A is normal, the A indicator (red light) stays on. If Source A fails, the A light turns off and the system automatically switches to Source B within 0.05s, with B indicator (green light) turning on. Once Source A recovers, it will automatically revert from backup to the main source.
- 【Manual Mode】In Manual Mode, set the left switch to “Manual.” Choose Source A or Source B by turning the right red handle. The corresponding LED indicator will display the selected source: Source A (red light) or Source B (green light). This mode allows flexible control for inspection, testing, or special operating needs.
- 【Voltage Protection & Safety】 This 110V ATS transfer switch is compatible with 50/60Hz dual power grids and designed for PZ30 rail mounting. Built-in protection values: undervoltage 85V, recovery 95V; overvoltage 145V, recovery 130V (±5V). The switch is made with flame-retardant PA6 material and silver contacts, ensuring over-voltage, under-voltage, overload, and short-circuit protection for maximum reliability.
- 【Wide Application & Warranty】 Suitable for areas where uninterrupted power is critical, including RV, homes, farms, laboratories, hospitals, cold storage, data centers, and emergency systems. Compact 2P ATS design supports indoor and outdoor generators. Backed with 30-day free returns and 3-year warranty, ensuring a worry-free shopping and long-term use.
Overview
- Operation Mode : Manual-Automatic
- Current Rating : 100 A
- Operating Voltage : 110 volts
- Contact Type : Normally Open
- Connector Type : Clamp
- Brand : Ketofa
- Switch Type : Rotary
- Terminal : Through Hole
- Material : Plastic
- Item dimensions L x W x H : 1 x 1 x 1 inches

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SMART HOME FAQ
Yes — many modern devices support multiple platforms.
Matter-certified devices can work across Alexa, Google Home, and Apple HomeKit at the same time.
Not always.
Smart bulbs, plugs, cameras, and video doorbells are often easy DIY installations, while full security systems may need professional setup.
Many devices still work manually or through local control.
You may lose remote app access, but locks, lights, and thermostats often continue basic functions.
Security depends on the device and setup.
Use strong passwords, trusted brands, firmware updates, and secure Wi-Fi for better protection. Privacy and unauthorized access are common concerns in smart homes.
Most homeowners start with:
Smart Security Cameras
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Smart Thermostats
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