Panel-mounted | digital backup automatic power transfer switch for generators | for uninterrupted power supply | 4P | 63A | 400VAC

Technical Specifications
Type: Terminal ATS with manual transfer capability (CB type)
Power sources: Dual power grid (main and backup)
Operating voltage: 400V AC (three-phase)
Rated current: Up to 63A
Frequency: 50/60Hz
Number of poles: 4P
Transfer time: 1.5 – 3 s
Control: Automatic / Manual
LED indicators: Low power consumption, clear display of operating modes
Function buttons:
• Switch to main source (in manual mode – increase value)
• Switch to backup source (in manual mode – decrease value)
• Dual disconnection (both sources off)
• Automatic / manual mode selection

Mechanical handle:
• 1 – main source active
• 0 – both sources off
• 2 – backup source active

Mounting: Panel

Functions

Automatic load transfer to backup source when main source fails

Ability to switch manually using buttons and manual control handle

Visual operating mode indication via LED display and mechanical pointer

Dual disconnection function to turn off both sources simultaneously

Applications

Household user: Ideal for homes, cottages, or summer houses where automatic switching between grid and generator ensures operation of refrigerators, lighting, or heating systems during outages.

Electrician: Easy to install and connect to existing distribution boards, with clear LED indication for quick source status identification. Manual switching provides flexibility during maintenance or testing.

Engineer: Suitable for industrial and infrastructure systems requiring uninterrupted operation of critical loads such as servers, pumps, or production lines.

Advantages

High reliability – meets IEC and GB/T international standards

Versatile use – suitable for residential and industrial applications

Automatic and manual control in one device

Fast switching – only 1.5–3 seconds

Clear indication – LED and mechanical pointer for status detection

Compact design – convenient panel installation

Disadvantages

Transfer time is not instantaneous – 1.5–3 seconds may be critical for ultra-sensitive equipment

Requires two independent power sources – without them, the device cannot function