Dual Power Automatic Transfer Switch CB Type ATS 3P 63A 220V

In this review of the Dual Power Automatic Transfer Switch CB Type ATS 3P 63A, the bottom line is straightforward: this compact changeover switch is best for homeowners or RV owners who need a simple, fast way to switch between grid and generator power for essential circuits. The ATS prioritizes the main power supply and will automatically transfer to a generator when grid power fails, with a transfer time under 2s. It is built as a CB type with two circuit breakers and mechanical interlocking, and it is intended for fixed mounting with screws for a durable, stationary installation.

Key Features

• Automatic transfer: Detects grid failure and switches to generator power automatically so critical loads stay powered without manual intervention.
• CB type construction: Composed of two circuit breakers with mechanical interlocking to prevent simultaneous connection of both sources, improving safety during changeover.
• 63A rated current: Supports moderate household or RV circuits up to 63A, suitable for typical emergency loads.
• Fast transfer speed: Transfers in less than 2s to minimize downtime for connected equipment during power outages.
• Standard voltage and frequency: Designed for 220V at 50/60Hz so it fits common household generator and mains setups where that rating is used.
• Screw-fixed installation: Mounting with screws offers a stable, long-term installation for stationary panels and generator hookups.

Who It's For

The Dual Power Automatic Transfer Switch is aimed at homeowners, small workshop owners, and RV enthusiasts who need a simple, reliable method to switch essential circuits to a backup generator. It works well where a single-phase 220V system and a generator are present and the user wants automatic priority for mains power with quick changeover to the generator.

It is not intended for users who require integrated load management across many circuits, multi-phase industrial setups, or where a soft transfer or configurable delay is required. Professional electrical installation is recommended if the buyer is not familiar with mains and generator wiring.

Pros & Cons

Pros

• Simple automatic operation that restores power quickly when the grid fails.
• CB type design with mechanical interlocking enhances safety during source switching.
• Supports 63A at 220V and both 50 and 60Hz, matching many domestic generator configurations.
• Compact and intended for fixed screw mounting, making it straightforward to install in a dedicated panel.

Cons

• Build quality reports are mixed, so buyers should inspect the unit and consider professional installation to ensure reliable operation.
• Not suitable for complex multi-circuit load management or three-phase systems.

Specifications

Product type	CB Type Automatic Transfer Switch
Rated current	63A
Rated voltage	220V
Rated frequency	50/60Hz
Transfer speed	Less than 2s
Installation method	Fix with screws

Our Verdict

The Dual Power Automatic Transfer Switch is a pragmatic, value-minded choice for single-phase 220V setups that need automatic backup switching with a safety-focused CB type design. It offers fast transfer times and straightforward installation for dedicated circuits, making it a good buy for homeowners and RV users who want reliable emergency power without complex controls; check fit and build before installation.

Frequently Asked Questions

Will the ATS switch if the generator is off?
It will not transfer to the generator unless the generator is running and producing voltage, because the device requires a live reserve source to connect.

Can this be used for three-phase systems?
No, this model is described as a 3P 63A changeover for single-phase 220V applications and is not intended for multi-phase industrial use.

How is the unit installed?
The ATS is fixed with screws in a panel or enclosure and should be wired by someone familiar with mains and generator connections to ensure safe operation and correct interlocking.