MLQ5 Series ATS Automatic Transfer Switch 4P 250A/400A/630A Button Type / PC Class Automatic Transfer Switch

MLQ5 series 4P PC class ATS automatic transfer switch is button type dual power changeover switch, available in 250A, 400A, 630A. It has auto & manual operation modes with mechanical and electrical interlock protection. It automatically switches between two power sources during power failure to keep loads powered, widely used for fire control, building and industrial backup power systems.

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Product Details
Product tags

Available rated current:250A, 400A, 630A, 4P (3P+N)

Main Specifications

Model: MLQ5-250/4P, MLQ5-400/4P, MLQ5-630/4P
Type: PC Class Automatic Transfer Switch (ATS), Button Control Type
Poles: 4P (3 phases + neutral line)
Rated Current Options: 250A, 400A, 630A
Rated Operational Voltage: 400V AC
Rated Insulation Voltage: 690V AC
Frequency: 50/60Hz
Control Coil Voltage: AC230V
Structure: Integrated PC type, fixed installation
Protection: Mechanical interlock, electrical interlock

Key Features

✔ PC level solid main body, strong breaking capacity, high safety performance

✔ Button design for manual/auto mode selection, easy operation on panel

✔ Multiple current options: 250A,400A,630A to meet different load requirements

✔ Dual interlock (mechanical + electrical), prevent parallel connection of two power supplies

✔ Stable switching performance, suitable for long-time continuous operation

✔ Clear position indicator: I (Source I), O (Off), II (Source II)

Application Scenarios

MLQ5 series ATS is widely used in projects that require continuous power supply, such as commercial buildings, data rooms, hospitals, fire control systems, pumping stations, shopping malls, factory workshops and photovoltaic grid-connected backup power systems.

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