Model: 4P100A NO POWER OFF Keep critical systems powered automatically when utility power fails. This dual power automatic transfer switch detects loss of public power and switches to a backup source, then returns to public power when it is restored. Fast switching and simple controls reduce downtime and the need for manual intervention. Key benefits Continuous power: automatic transfer between main and backup supplies keeps essential equipment running during outages. Fast response: switching time of 2 seconds or less minimizes interruption. Flexible control: supports fully automatic operation and manual override for maintenance or special conditions. Clear status indication: indicator lights show operating mode and supply status for quick checks. Durable construction: resin and steel housing with IP63 protection for reliable performance in demanding environments. Main features Model: 4P100A NO POWER OFF Conversion mode: self casting Operation mode: automatic and manual selectable Conversion time: <= 2 seconds Display: indicator light display Terminals: mouth type terminal blocks for safer and faster wiring Motor: designed for stable, lownoise operation Circuit type: bidirectional, 2 positions Installation: wall mounted International protection level: IP63 ATS level: CB level Usage level: AC33iB Electrical specifications Rated voltage: AC400V Working voltage: AC220V, 50/60Hz Rated current: 63A Installation hole: M6 Display and control voltage references provided in user manual Dimensions and weight Installation size: 128 mm x 122 mm (5 x 4.8 in) Product size: approximately 150 mm x 137 mm x 118 mm (5.8 x 5.4 x 4.6 in) Packaging size: 175 mm x 150 mm x 125 mm (6.9 x 5.9 x 4.9 in) Gross weight: 1.45 kg (3.2 lbs) Typical applications Elevator power transfer to maintain safe operation during supply interruptions Building monitoring and fire protection systems that require continuous power Commercial and industrial sites such as office buildings, ports, banks, and factories What is included 1 x Dual power automatic transfer switch (model 4P100A NO POWER OFF) 1 x English manual Important notes Read the user manual carefully and follow all safety precautions before installation and use. Allow for slight color variations due to lighting in product photography and a 1 to 3 cm tolerance from manual measurement. Verify product specifications against your system requirements before placing an .