Automatic transfer switch 4P 63A 400V What it does Automatically switches a four pole electrical circuit between two power sources when a loss or of main power is detected. Supports three phase systems with neutral, rated for continuous load up to 63 A at 400 V. Keeps critical loads powered by transferring supply to a backup source such as a generator, inverter, or alternate distribution line. Key benefits Uninterrupted power for essential equipment: reduces downtime by quickly transferring load to a backup source when the main supply fails. Four pole coverage: includes neutral switching so three phase loads receive coordinated protection and continuity. Clear compatibility: designed for three phase 400 V systems and loads within the 63 A rating, making it suitable for small commercial and light industrial installations. Compact and installation friendly: built to fit standard electrical panels and distribution enclosures, simplifying retrofit or installations. Durable operation: constructed for repeated switching cycles and continuous service in electrical distribution systems. Important attributes Function: automatic detection and transfer between primary and secondary power sources; returns to primary source when it is restored. Compatibility: intended for 400 V three phase systems, backup generators, inverters, and alternate distribution feeds with loads up to 63 A. Poles: four pole design provides simultaneous switching of all phases plus neutral. Rated current and voltage: 63 A nominal current rating at 400 V nominal system voltage. Build and installation: compact enclosure for panel mounting; connections for two incoming source lines and one load output; designed for straightforward wiring in standard electrical distribution setups. Performance: engineered for timely, repeatable transfer operations to maintain supply continuity for connected equipment. Practical applications Backup generator transfer for small commercial buildings: automatically switch lighting, HVAC, and essential services to a generator during utility outages. Light industrial machinery and motor circuits: maintain production continuity for equipment that requires coordinated three phase and neutral switching. Remote sites and critical infrastructure panels: provide reliable source switching for telecom shelters, pump stations, or remote control cabinets where a secondary supply is available. Installation and operation notes Install in an appropriate electrical distribution panel and wire the two source inputs and load output according to system wiring practices and local regulations. Verify load does not exceed the 63 A rating and confirm compatibility with the supply types in use. Use qualified electrical personnel for installation, commissioning, and periodic inspection. This automatic transfer switch provides a practical, compact solution for automated source changeover in three phase 400 V systems up to 63 A, supporting continuity of service for commercial and light industrial installations.