Automatic Transfer Switch 400V 125A 4 Pole Generator Changeover with Millisecond Power Transfer

Double power changeover switch with builtin signal output Key benefits Continuous power availability: Automatic transfer to an emergency supply with millisecondlevel response ensures uninterrupted operation when the primary supply fails. Remote status monitoring: Integrated open circuit signal output allows scheduled standby control and connection to external signal indicator lights so the device status can be checked from outside the equipment cabinet. Reliable electrical performance: Silver contacts provide improved conductivity, reducing contact resistance and improving switching reliability. Improved insulation and durability: Housing and components use retardant plastic material to provide effective electrical insulation during operation. Broad compatibility: Supports automatic switching of emergency power at 400V and returns to the main supply when normal power is restored. Main features Builtin open circuit signal output for scheduled standby manipulations and integration with indicator lights, enabling convenient external monitoring of switch status. Millisecondlevel automatic transfer to the emergency power source upon disruption of the main supply, enabling seamless switching without interruption to connected loads. quality silver contacts to enhance electrical conductivity and longevity of switching performance. Constructed from retardant plastic materials to provide reliable insulation during operation. Rated for 400V emergency power switching and automatic reversion to the primary supply once restored. Applications and scenarios Factory production lines: Maintain continuous power to control systems and lines during mains interruptions to reduce downtime and protect ongoing processes. Shopping malls and retail centers: Automatically switch lighting, security systems, and critical services to generator power during outages, with external indicator lights showing system status for facility managers. Server rooms and office buildings: Provide seamless backup for critical IT equipment and building systems, while enabling remote monitoring of transfer switch status from outside equipment cabinets. Technical and installation notes Designed for integration with indicator lights and scheduled standby control systems via the open circuit signal output. Intended for installation inside equipment cabinets with external monitoring through connected indicator lights. Compatible with 400V emergency power systems and automatic retransfer to main supply when normal power returns. This double power changeover switch is suited to environments that require uninterrupted power and straightforward status monitoring without manual intervention.