Size: DPT63CB011C633P; Dual power transfer switch (CB level) DPT63CB011 C63 3P | 10100515 Overview A CB level dual power transfer switch designed for reliable automatic switching between two power sources in three phase circuits. Provides uninterrupted power continuity, built in protections to prevent short circuits, and a modular structure for flexible configuration. Key benefits Ensures continuous power supply through automatic detection and fast switching between primary and secondary sources, reducing downtime for critical loads. Prevents dangerous backfeed and short circuits with combined mechanical and electrical interlocking, improving safety during transfer operations. Extends service life with a stable internal design and smooth contact switching that minimizes wear from repeated transfers. Simplifies system expansion and by supporting a variety of functional modules, allowing tailored control logic and monitoring features to meet site requirements. Main features Function: automatic dual power transfer at CB level for three phase circuits (3P). Model and size: DPT63CB011C633P; DPT63CB011 C63 3P, item 10100515. Safety: mechanical and electrical interlocking mechanisms plus multiple protection functions to avoid short circuits during transfer. Reliability: stable structural design and smooth contact operation for consistent performance and long service life. Modularity: supports a range of add on modules for expanded functions and customized switching logic to improve conversion rates. Compatibility: suitable for systems that require CB level transfer, including mains to generator, mains to UPS, or alternate power source switching in three phase installations. Performance and design notes Automatic detection monitors source availability and triggers an orderly transfer to maintain load continuity. Interlocking prevents simultaneous closure of both sources, eliminating the risk of direct shorting between supplies. Modular architecture reduces downtime for upgrades and allows installation of control or monitoring modules without major rewiring. Typical applications Commercial buildings and office blocks: automatic backup switching between utility power and standby generator for critical lighting, elevators, and essential systems. Industrial and manufacturing plants: secure transfer for three phase motor loads and process equipment to avoid production interruptions. Data center and telecom sites: selective circuit transfer for localized backup circuits where uninterrupted power and safe switching are required. Installation and maintenance Designed for straightforward integration into distribution panels and switchgear assemblies. Modular units allow quick configuration changes and simplify maintenance by isolating components for service without replacing the entire switch. Suitable for engineers and facilities managers looking for a compact, reliable CB level dual power transfer switch for three phase applications that balances automatic continuity, safety interlocks, long life, and modular expandability.