Dual Power Supply Transfer Switch CDQ1S630/4P 400A CDQ156304004 Overview This 4pole dual power supply transfer switch is designed to transfer a load between two separate power sources. It is rated for 400 A and built for integration into electrical distribution systems that require reliable source changeover and clear wiring organization. Key benefits Ensures continuous power availability by enabling quick changeover between primary and secondary supplies. Simplifies system design and wiring for panels, switchboards, and distribution cabinets with a 4pole configuration. Reduces operational downtime by minimizing manual intervention during source switching. Streamlines integration with generators, UPS systems, and utility feeds for robust backup arrangements. Clear model and part identification for straightforward procurement and replacement: CDQ1S630/4P 400A CDQ156304004. Main features and attributes Function: Dual supply transfer switch for switching a load between two independent power sources. Poles: 4pole configuration suitable for threephase systems with neutral switching. Rated current: 400 A continuous rating to support medium to power circuits. Model and part number: CDQ1S630/4P and CDQ156304004 for accurate system matching. Form factor: Designed for panel or switchboard integration to conserve space and maintain tidy electrical layouts. Construction: Engineered for electrical distribution environments with components selected for durability and consistent performance. Compatibility: Suited to systems requiring 4pole, 400 A switching; compatible with common backup generators, UPS systems, and utility mains when configured accordingly. Practical use scenarios Commercial building backup power: Use the transfer switch to move critical loads from utility mains to a standby generator during outages, ensuring essential lighting and HVAC circuits remain powered. Industrial plant distribution: Integrate into a switchboard to manage feed switching between two incoming utility feeds or between utility and generator, reducing production interruption during source changes. Data center or server room redundancy: Combine with UPS and generator systems to coordinate source selection and maintain continuous power to key server racks and network equipment. Installation and compatibility notes Intended for installation within electrical distribution panels and switchboards; integration should follow system wiring requirements for 4pole transfer switching. Works with typical threephase systems that require neutral switching at 400 A. Professional installation and commissioning by a qualified electrical technician is recommended to ensure correct wiring and coordination with upstream and downstream protective devices. What stands out Precise model identification and a 4pole, 400 A rating for reliable selection in medium to current installations. Purposebuilt for straightforward integration into systems that need dependable source changeover without complex redesign. Model reference: CDQ1S630/4P 400A CDQ156304004