Automatic switch, three-phase, 400VAC for panel, din rail, um sw

Automatic Transfer Switch ATS Slim 4P 80A for Main and Backup Power AC 220V

The ATS Slim 4P 80A Automatic Transfer Switch is designed to automatically switch between two independent power sources, such as the main electrical grid and a backup generator, UPS, or alternative power supply. The device continuously monitors the main power source and automatically transfers the load to the backup source whenever a power failure or abnormal voltage is detected, ensuring uninterrupted power supply.

Once the main power supply returns to normal, the ATS automatically switches the load back after a built-in protection delay. Integrated mechanical and electrical interlocking prevents both power sources from being connected simultaneously, ensuring maximum operational safety.

The 4-pole (4P) configuration allows simultaneous switching of all three phases and the neutral conductor, making it ideal for three-phase electrical installations where complete isolation of both sources is required. Compact Slim construction allows installation in electrical panels with limited space, while DIN rail mounting ensures quick installation. :contentReference[oaicite:0]{index=0}
Key Features

Automatic transfer between main and backup power
Model: 4P 80A
Suitable for three-phase electrical systems
Switches all three phases and neutral simultaneously
Main power source priority
Automatic return to the main supply after restoration
Transfer time ≤20 ms
Mechanical and electrical interlock protection
Automatic and Manual operating modes
LED indicators for Main Power, Backup Power and Load status
Integrated arc extinguishing system
Compact Slim design
35 mm DIN rail mounting
No external control wiring required
UL94 V-0 flame-retardant housing
Ideal for generators, UPS systems, industrial panels and emergency backup power systems

Operating Principle

The ATS continuously monitors the main power supply. If the voltage drops below 175V or rises above 275V, the load is automatically transferred to the backup source. When the main supply returns to the normal operating range of 187V–253V, the ATS automatically reconnects the load after approximately 30 seconds.
Applications

Three-phase residential installations
Industrial electrical systems
Commercial buildings
Backup generator systems
UPS installations
Server rooms
Manufacturing equipment
Pump stations
Automatic backup power systems
Critical power applications

Technical Specifications
Device Type Automatic Transfer Switch (ATS)
Series Slim
Poles 4P
Rated Current 80A
Operating Voltage AC 220V
Frequency 50/60Hz
Rated Insulation Voltage (Ui) 690V
Impulse Withstand Voltage (Uimp) 8kV
Transfer Time ≤20 ms
Utilization Category AC-31B
Mechanical Life ≥6000 operations
Electrical Life ≥1500 operations
Operating Temperature -5°C to +40°C
Storage Temperature -25°C to +55°C
Maximum Installation Altitude 2000 m
Protection Rating IP30
Mounting 35 mm DIN Rail
Wire Size 1–25 mm²
Tightening Torque 2.5 Nm
Dimensions 116 × 80 × 71 mm
Package Includes

1 × ATS Slim 4P 80A Automatic Transfer Switch