MLHGL-630/4P Dual power automatic transfer switch

An automatic transfer switch (ATS) is a device that automatically transfers a power supply from its primary source to a backup source when it senses a failure or outage in the primary source.

When a failure occurs in a primary power system, the ATS invokes a standby powersource, such as an uninterruptable power supply. An ATS can also start up more long-term backup power systems, such as local diesel generators, to run electric equipment until utility power is restored.

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Features of MLHGL-630/4P Dual power automatic transfer switch

  • Reasonable structure, small size, beautiful appearance, equipped with protective cover, power supply is more safe and reliable.
  • Complete protection function, short circuit, overload, lack of phase, undervoltage protection.
  • Noiseless operation, energy saving, easy installation, simple operation and reliable performance.
  • Especially suitable for office buildings requiring fire fighting.

Specifications of MLHGL-630/4P Dual power automatic transfer switch


  • Model: MLHGL-630/4P
    Insulation voltage: 4000 (V)
  • Input voltage: 220V
    Rated voltage: 400 (V)
  • EPS external indication: DC12-24V
    Rated current: 63 (A)
    Rated impact withstand voltage: 4 (KV)
    3C rated voltage range: 37V-440V
  • Size: 21.5 x 13.5cm / 8.5 x 5.3in
  • Weight: 1685g


Rated current
Rated voltage
DC250V 400V 500V 750V 1000V
Rated frequency
Poles Number
Breaking Capacity
Brand Name
Mulang Electric
Operating temper
BCD Curve
Protection Grade