4P 100A 400V Dual Power Transfer Switch ATS Universal transfer switch available in ATS models 20A, 40A, 60A, 80A, and 100A. Designed as a compact, reliable automatic transfer switch for switching between two power sources. Key benefits Ensures continuous power by automatically transferring load between primary power and backup generator, reducing downtime and manual intervention. Universal compatibility across ATS models 20A through 100A, allowing consistent installation practices and easier stocking of spare parts. Built for genset assembly and auxiliary panel applications, making it suitable for equipment builders and service providers. Field proven in international use by customers, providing practical performance feedback from real installations. Main features Configuration: 4 pole design for three phases plus neutral. Electrical rating: 100A at 400V for the 4P model; same design approach applied across 20A, 40A, 60A, 80A, and 100A models. Function: Automatic transfer switching between two power sources to maintain load continuity. Form factor: Compact unit intended for integration into generator sets, distribution panels, or control cabinets. Application fit: Supplied as an accessory for genset assembling and as a spare part for maintenance and repairs. Why customers choose this ATS Simplifies installation and inventory management by keeping the same operating principle across multiple current ratings. Reduces service time by providing a dropin compatible transfer switch for genset and distribution system work. Proven performance in a range of field applications supports confidence in real world use. Typical applications Backup power for small commercial buildings and shops where automatic switching to a generator is required. Integration into generator sets and distribution panels during assembly or retrofit projects. Temporary power setups on construction sites and outdoor events where reliable changeover between sources is needed. Technical compatibility and supply Suitable for use in systems rated for 400V threephase supply, 4P switching requirements, and nominal currents from 20A up to 100A depending on model selection. Supplied as a component for genset assembly and spare parts inventory. Note Select the ATS model with the appropriate current rating for your load and installation requirements. The product design and switching function are consistent across the available model range.