Oumefar Automatic/Manual Transfer Switch Review: Reliable & Safe?

The Oumefar Automatic/Manual Transfer Switch is a rock-solid choice for keeping your power flowing without lifting a finger. It earns its 5.0-star reputation by handling source swaps automatically, so you’re never left in the dark.

This 63A unit is built for homeowners or small business owners who need reliable backup power for critical equipment. Its standout strength is the lightning-fast switchover, which kicks in within milliseconds of an outage.

• Auto-switches between main and backup power in milliseconds.
• Three modes: self-restoring, alternate, and self-feeding.
• Built-in overload and short circuit protection.
• Compact, anti-interference design for professional installs.
• Suits hospitals, shops, and high-rise buildings.

Below, I’ll walk you through the features, pros, and cons to help you decide if it fits your setup.

What Makes the Oumefar Automatic/Manual Transfer Switch Stand Out

This 63A 3P transfer switch is built to keep your power flowing without you having to lift a finger. It’s a solid pick if you need dependable backup switching for a home, business, or any setup where downtime just isn’t an option.

• Instant Automatic Switching: Constantly monitors your main power source and flips to the backup supply (like a generator or secondary utility) within milliseconds when it detects an outage, undervoltage, or phase loss.
• Three Flexible Modes: Offers self-throw and self-reply (automatically restores when main power returns), alternate working mode, and a self-feeding self-restoring mode, so you can tailor operation to your setup.
• Built-in Circuit Protection: Includes overload protection, a short circuit capacity of 3KA, and a rated short-time withstand current of 63A to help safeguard your electrical system from damage.
• Compact and Reliable Build: Made from plastic materials with a compact structure, it delivers strong anti-interference capability and high precision operation, plus high breaking capacity and short arc behavior.
• Quiet Operation: Runs with no noise during operation, making it suitable for professional installation in environments where a quiet switch is appreciated.
• Broad Real-World Use: Suited for hospitals, shopping centers, metallurgy, high-rise buildings, and other facilities where power failure isn’t permitted — and it handles motor loads, plus mixed resistance and lighting loads up to 30% (AC-33B use level).

If you need a dependable way to keep things running when the main power drops, this ATS has the essentials covered.

What the Oumefar Automatic/Manual Transfer Switch Gets Right — and What to Keep in Mind

How the Oumefar Automatic/Manual Transfer Switch Keeps Your Power Flowing

Automatic Switching You Can Rely On

The Oumefar ATS handles the switchover for you without any manual input. It monitors your main power source constantly and jumps to backup when needed.

This 63A 3P unit detects outages, undervoltage, or phase loss in milliseconds. That speed matters for sensitive equipment that can’t tolerate even brief interruptions.

Reviewers rate this switch a perfect 5.0 stars, and most mention the seamless transfer during real-world outages. You’ll appreciate the peace of mind when storms knock out your primary supply.

Three Modes Give You Full Control

You’re not stuck with one way of operating. The Oumefar offers three switchable modes to match your setup.

Self-throw and self-reply mode automatically restores main power when it returns. Alternate working mode is useful for rotating between two sources, and self-feeding self-restoring mode handles trickier configurations.

You can switch modes using the rotary actuator and touch controls. The process is straightforward, even for first-time users.

Protection Features That Guard Your System

This transfer switch doesn’t just route power—it actively protects your equipment. Built-in overload and short circuit protection are standard here.

The switch handles a short circuit capacity of 3KA and a rated short-time withstand current of 63A. That’s solid protection for most residential and light commercial setups.

You’ll also get rated insulation voltage of 300V and impulse withstand voltage of 0.6KV. These ratings mean the switch can handle voltage spikes without failing.

Build Quality and Installation Fit

The compact plastic housing keeps things light and easy to mount. Despite the lightweight feel, it delivers strong anti-interference capability and high precision operation.

Installation is professional-grade, with a clamp connector type and normally closed contacts. You’ll need basic electrical knowledge, but the compact structure fits in standard panels without crowding.

Reviewers note it operates with no noise during switching. The high breaking capacity and short arc design add to the clean performance.

Where This Switch Shines in Real Applications

This 63A unit is rated for AC 50Hz systems at 380V and below. It’s built for facilities where power failure isn’t an option.

Hospitals, shopping centers, high-rise buildings, and metallurgy plants are common targets. You’ll also find it works well for motor loads and mixed loads like resistance and lighting up to 30% (AC-33B use level).

If you run a workshop or home with a backup generator, this switch fits right in. Just make sure your load stays within the 63A rating.

Specification	Detail
Brand	Oumefar
Current Rating	63A, 3-Pole
Voltage Compatibility	AC 50Hz, 380V and below
Actuator Type	Rotary
Short Circuit Capacity	3KA
Rated Insulation Voltage	300V

The Oumefar Automatic/Manual Transfer Switch earns its perfect rating by doing exactly what it promises. You get fast, reliable switching and solid protection in a compact package.

If you need uninterrupted power for critical equipment, this unit delivers. Just confirm your voltage and load requirements before ordering.