Fourpole 400V transfer switch for reliable automatic and manual power source transfer in residential and public installations. Key benefits Ensures reliable transfer between power sources while providing multiple protection functions to reduce risk to connected equipment. Flexible operation with both automatic and manual modes for routine use and maintenance. Compact and lightweight design simplifies installation in distribution panels and switch cabinets. Clear compatibility with standard 50 Hz and 60 Hz systems and common control voltages. What it does and why you need it Automatically switches between two power sources to maintain power continuity when the primary source fails. Protects circuits and equipment with builtin shortcircuit, overload, phase loss, and undervoltage protection. Manual override lets technicians perform tests or maintenance without losing control over the power supply. Standout attributes Function: Automatic and manual transfer operation for flexible control of power routing. Compatibility: Designed for 4pole 400V systems, operating at 50 Hz or 60 Hz, with an operating/control voltage of 220V. Size and weight: Compact footprint and a lightweight body at 1300 g make it easy to mount in standard panels. Performance: Rated for 63 A continuous current and suitable for ambient conditions from 5 to 40 C. Practical applications Home backup power: Switches household circuits to a standby generator during mains outages, then back to mains when restored. Commercial and public buildings: Manages power source transfer for offices, retail locations, schools, and community centers to keep essential systems running. Utility and facility distribution: Integrates into local distribution panels for lighting, HVAC, or other critical loads where controlled transfer and protection are required. Technical specifications Poles: 4P 400V Rated voltage: 400 V Operating/control voltage: 220 V Frequency: 50 Hz / 60 Hz Rated current: 63 A Ambient temperature range: 5 to 40 C Weight: 1300 g Operation modes: Automatic and manual Protection functions: Shortcircuit protection, overload protection, phase loss protection, undervoltage protection Design features: Compact, reasonable structure for easy and reliable installation; simple operation and dependable performance This transfer switch is suitable where compact size, multiple protection features, and flexible operation are required to maintain uninterrupted power and simplify installation and maintenance.