Model and Size: NH40315/4SZ Key benefits Ensures continuous power: automatic detection and switching between power sources reduces downtime and maintains power continuity for critical loads. Protects equipment and personnel: mechanical and electrical interlocking plus multiple protection functions prevent short circuits and unsafe switching conditions. Delivers long service life: stable mechanical design and smooth contact switching reduce wear and extend operating life. Flexible and extensible: supports a variety of functional modules for easy expansion and to match system requirements and improve conversion rates. Main functions and performance Automatic detection and switching of power supply to maintain uninterrupted power for connected systems. Mechanical interlock combined with electrical interlock for coordinated, failsafe operation that avoids simultaneous connection of multiple sources. Multiple protection functions to guard against common electrical faults during transfer operations. Stable contact mechanism designed for smooth transitions and consistent performance over many cycles. Compatibility and sizing Designated model NH40315/4SZ, suitable for integration into power distribution and transfer systems that require the specified model form factor and switching capability. Modular architecture makes it straightforward to add functional modules to meet specific control, monitoring, or protection needs. Practical applications Industrial power distribution panels where automatic source transfer is required to protect production processes. Commercial and facility backup power systems, including generator or UPS transfer for uninterrupted operation of lighting, elevators, and HVAC controls. Data centers and network rooms that need reliable source switching to minimize service interruptions and protect sensitive equipment. Why choose this model Combines automation, safety, and durability in a single transfer device. Modular support allows tailored configurations without redesigning the main switchgear. Clear focus on reliable switching and protection to reduce risk and maintenance needs. For system designers and maintenance teams, model NH40315/4SZ offers a practical, modular solution for dependable automatic power transfer and longterm operational stability.