Automatic fourpole transfer switch family, available in current ratings from 63 A to 630 A (models: 4P63A, 4P100A, 4P125A, 4P160A, 4P250A, 4P315A, 4P400A, 4P630A) Key benefits Continuous power availability: automatic detection and fast switching between power sources to maintain uninterrupted supply. Enhanced safety and reliability: combined mechanical and electrical interlocking prevents simultaneous source connection and reduces risk of short circuits. Long service life: stable structural design and smooth contact switching minimize wear and extend operational life. Flexible expansion: modular design supports a range of functional modules for and improved transfer performance. Wide compatibility: fourpole architecture and a broad current range make these switches suitable for many low and medium voltage power systems. Features and performance Automatic switching logic for source detection and seamless transfer. Mechanical and electrical interlock mechanisms to ensure safe operation during bridging and switching. Multiple protection functions integrated at the device level to protect equipment and circuits. Smooth contact operation designed to reduce arcing and mechanical stress during switching. Modular slots allow addition or replacement of control and monitoring modules without major rewiring. Available models cover common installation requirements from 63 A up to 630 A. Suitable applications Commercial and office buildings: automatic source transfer to minimize downtime for elevators, lighting, and critical services during mains interruptions. Data centers and telecom facilities: maintain continuous power to servers and network equipment by switching to backup sources automatically. Industrial and manufacturing plants: protect production lines and control systems from supply interruptions with reliable automatic transfer and interlock protection. What to consider when selecting a model Required continuous current rating: choose the model with the appropriate ampere rating for your load (63 A to 630 A). Site control and monitoring needs: select compatible functional modules to add remote monitoring, control logic, or interlocking options. System topology: confirm fourpole configuration fits the supply and load wiring scheme and that protective devices upstream are coordinated with the transfer switch. This product family delivers automated transfer functionality, robust interlock safety, longterm operational stability, and modular expandability to match varied electrical distribution needs.