The Sasun 63A Dual Power Automatic Transfer Switch (ATS) is designed to automatically transfer an electrical load between the main power supply and a backup source such as an inverter, generator, or solar backup system.

When mains power fails, the ATS switches the load to the backup source. When mains power returns, it automatically transfers the load back. The supplier lists this model as SGLD-63, 2 Pole, 63A, AC230V 50/60Hz.

⚡ Key Features

• 🔌 Rated Current: 63A
• ⚙️ Poles: 2 Pole
• 🔋 Rated Voltage: AC 230V
• 🔄 Frequency: 50/60Hz
• ⚡ Dual power automatic transfer
• 🔄 Auto / Manual operating modes
• 🏠 Suitable for home backup power
• 🔋 Compatible with inverter systems
• ☀️ Suitable for solar backup systems
• ⛽ Suitable for generator backup
• 🏢 Useful for offices and commercial premises
• 🔴🟢 Power-source indication
• ✋ Manual rotary override available

🔄 How It Works

A typical installation works like this:

• ⚡ Normal supply available: Loads operate from mains power
• 🚫 Mains supply fails: ATS transfers the load to the backup source
• 🔋 Backup active: Inverter, generator or solar backup supplies the load
• ⚡ Mains returns: ATS transfers the load back to normal power

The ATS itself does not generate electricity; it only switches the load between two available power sources.

✋ Automatic & Manual Operation

The front selector provides both operating options:

• 🔄 AUTO: The switch automatically selects between normal and emergency power
• ✋ MANUAL: The user can manually operate the changeover mechanism when required

Manual mode is useful during testing, maintenance or troubleshooting.

🏠 Suitable Applications

• 🏡 Home backup systems
• ☀️ Solar inverter installations
• 🔋 Battery inverter systems
• ⛽ Generator backup
• 🏢 Offices
• 🏪 Shops
• 🏭 Small commercial installations
• 💻 Data and communication equipment
• 🏥 Critical-load circuits

✅ Benefits

• Automatic backup power switching
• Reduces manual intervention during outages
• Fast restoration of connected loads
• Compatible with common backup systems
• Manual override available
• Compact installation
• Suitable for residential and commercial use
• Helps maintain power to critical loads

⚠️ Installation Notes

• 🔧 Installation should be carried out by a qualified electrician
• ⚡ Do not exceed the 63A rated current
• 🔌 Confirm both sources are 230V AC compatible
• 🌍 Ensure proper earthing
• 🛡️ Use correctly rated breakers and protection devices
• ☀️ For solar systems, connect the ATS on the AC side of the inverter, not directly to solar-panel DC
• 🚫 Isolate both power sources before installation or servicing
• 🔄 Confirm correct Normal and Emergency source wiring before switching on